RBT (Registered Behavior Technician) — All Questions

Across a 40-minute session, an RBT counts 24 requests made by Jonah. The team graphs requests per minute. What should the RBT plot?

• a.1.67 per minute, because 40 minutes divided by 24 requests is 1.67
• b.0.6 per minute, because 24 requests divided by 40 minutes is 0.60✓
• c.24 per minute, because the raw count is entered on the graph directly
• d.36 per hour, because 24 requests in 40 minutes scales to 36 per hour

(b) is correct: rate is count divided by observation time, and 24 ÷ 40 = 0.60 requests per minute. (a) inverts the calculation and yields minutes per request rather than requests per minute. (c) plots the raw count, which ignores the length of the session and would not be comparable with sessions of other lengths. (d) is arithmetically right — 0.6 per minute is indeed 36 per hour — but the graph is scaled in requests per minute, so plotting the hourly figure puts the point far off the correct value.

An RBT records latencies of 8, 12, 4, and 16 seconds between the instruction and Hugo's first step. The BCBA asks for the mean latency. What should the RBT report?

• a.40 seconds, because that is the total latency across the four trials
• b.16 seconds, because the mean is taken from the longest latency timed
• c.4 seconds, because the shortest latency represents typical responding
• d.10 seconds, because the 40 total seconds are divided by 4 trials✓

(d) is correct: 8 + 12 + 4 + 16 = 40 seconds, and 40 ÷ 4 trials = 10 seconds per trial. (a) reports the sum, which is a true total but is not a mean and would grow simply by running more trials. (b) uses the slowest trial, which overstates typical responding. (c) uses the fastest trial, which understates it in the same way; the mean sits between these two extremes.

Using a 10-step task analysis for handwashing, Ivy completed 7 steps independently. The graph shows the percentage of steps completed independently. What should the RBT plot?

• a.70%, because 7 independent steps divided by 10 steps is 0.70✓
• b.7%, because Ivy completed 7 of the steps without any prompting
• c.30%, because 3 of the steps still required a prompt from the RBT
• d.1.4, because 10 steps divided by 7 independent steps gives 1.43

(a) is correct: 7 ÷ 10 = 0.70, so 70% of the steps were independent. (b) reports the raw count as if it were a percentage, which happens to look close but is off by a factor of ten. (c) computes the percentage of prompted steps — 3 ÷ 10 = 0.30 — which is the mirror image of what the graph tracks. (d) inverts the fraction and produces a ratio above 1, which cannot be a percentage of steps.

An RBT records 20 protests in a 50-minute session on Tuesday and 18 protests in a 30-minute session on Wednesday. The BCBA asks which day had the higher rate of protesting. What should the RBT report?

• a.Tuesday, at 0.4 per minute, because 20 protests is the larger count
• b.Tuesday, at 2.5 per minute, because 50 minutes divided by 20 is 2.5
• c.Wednesday, at 0.6 per minute, because 18 divided by 30 is 0.60✓
• d.Wednesday, at 1.67 per minute, because 30 divided by 18 is 1.67

(c) is correct: Tuesday's rate is 20 ÷ 50 = 0.4 per minute and Wednesday's is 18 ÷ 30 = 0.6 per minute, so Wednesday is higher despite the smaller raw count. (a) computes Tuesday's rate correctly at 0.4 but then draws the wrong conclusion by leaning on the raw count. (b) inverts the arithmetic, producing minutes per protest for Tuesday. (d) reaches the right day through inverted arithmetic, since 30 ÷ 18 gives minutes per protest rather than protests per minute.

Marcus engaged in pacing for a total of 12 minutes during a 60-minute session. The BCBA wants the result expressed as a percentage of session time. What should the RBT report?

• a.12%, because 12 minutes of pacing occurred during the whole session
• b.5%, because 60 minutes divided by 12 minutes of pacing gives 5
• c.80%, because 48 of the 60 minutes did not involve any pacing at all
• d.20%, because 12 minutes divided by 60 minutes equals 0.20✓

(d) is correct: percentage of session time is behavior time divided by session time, and 12 ÷ 60 = 0.20, or 20%. (a) reports the raw minutes as a percentage, which would only be correct in a 100-minute session. (b) inverts the fraction; 60 ÷ 12 = 5 is a ratio, not a percentage. (c) computes the share of the session without pacing — 48 ÷ 60 = 0.80 — which is the complement of what was asked.

Why does a team convert counts to rate before comparing sessions?

• a.Rate removes the need to define the behavior in observable terms
• b.Rate accounts for differences in how long each observation lasted✓
• c.Rate converts a discontinuous measure into a continuous measure
• d.Rate is required whenever data are plotted on an equal-interval graph

(b) is correct: dividing the count by the observation time puts sessions of different lengths on the same footing, so a change on the graph reflects behavior rather than schedule. (a) is wrong because a clear definition is required no matter which summary measure is used. (c) is wrong because rate is computed from a continuous count; it cannot turn interval data into continuous data. (d) is plausible because rate is often graphed, but graphs also display counts, durations, and percentages.

Over ten sessions, Aria's independent responses were 2, 3, 3, 5, 6, 6, 8, 9, 9, and 11. The BCBA asks the RBT to describe the trend. What is the accurate description?

• a.An increasing trend, since the data path rises across the sessions✓
• b.A decreasing trend, since the values fall away from the starting point
• c.A flat trend, since several sessions repeat the same value in a row
• d.A variable pattern, since the values change from session to session

(a) is correct: the values climb from 2 to 11 with no reversal, so the overall direction of the data path is upward. (b) states the opposite direction. (c) is plausible because pairs of sessions repeat, but a few repeated values inside a rising series do not flatten the overall path. (d) is plausible because the numbers do change session to session, but variability describes bouncing without direction, and here the changes move consistently one way.

Baseline sessions for Rowan averaged about 12 tantrums, and the first five treatment sessions average about 4. The data path within each phase is fairly flat. Which term best describes the change?

• a.A change in trend, since the direction of the path shifted downward
• b.A change in variability, since the points cluster differently now
• c.A change in level, since the average value dropped between phases✓
• d.A change in latency, since the behavior takes longer to appear now

(c) is correct: level refers to where the data sit on the vertical axis, and a drop from about 12 to about 4 with flat paths in both phases is a level change. (a) is plausible because the numbers went down, but trend describes the slope within a phase, and both phases here are flat. (b) is plausible because phases can differ in spread, but the stem describes both paths as fairly stable. (d) is wrong because no time-to-onset measure was collected.

Dez's data for the last eight sessions read 2, 14, 3, 15, 4, 13, 2, and 16. The path shows no clear rise or fall. Which description fits the data best?

• a.A steep increasing trend with a high level across the sessions
• b.High variability, with the values bouncing between low and high✓
• c.A stable path at a low level with one unusual high data point
• d.A decreasing trend that is masked by the range of the values

(b) is correct: the values swing repeatedly between roughly 2 and 16 with no consistent direction, which is what variability looks like on a graph. (a) is wrong because the series does not climb; high values alternate with low ones. (c) is plausible because some points are low, but there are four high points, not one outlier. (d) is plausible because variability can hide a trend, but nothing here declines — the low points stay low and the high points stay high.

Kai's self-injury is targeted for reduction. Over the treatment phase the data read 9, 8, 6, 5, 3, and 2. What should the RBT report about the trend?

• a.The trend is increasing, which means the procedure is not yet working
• b.The trend is flat, which means the sessions are producing no change
• c.The trend is variable, which means the data cannot yet be interpreted
• d.The trend is decreasing, which is the direction the plan is aiming for✓

(d) is correct: the values fall steadily from 9 to 2, and for a behavior targeted for reduction a downward path is movement in the therapeutic direction. (a) reverses the direction of the data. (b) is wrong because the path clearly declines rather than holding steady. (c) is plausible because variability does block interpretation, but each value here is at or below the one before it, which is the opposite of a bouncing path.

Elin's graph shows baseline points at 10, 11, and 10, then a vertical line, then treatment points at 9, 7, 5, and 4. Which reading of the graph is correct?

• a.Baseline was decreasing, and treatment continued that same decrease
• b.Baseline and treatment show the same level with different variability
• c.Baseline was stable, and treatment shows a decreasing trend after it✓
• d.The vertical line marks a missing session rather than a new condition

(c) is correct: the three baseline points hover around 10 with no direction, and the four treatment points fall steadily, so a stable baseline is followed by a decreasing trend. (a) misreads baseline; 10, 11, 10 has no downward slope. (b) is wrong because the treatment points end well below the baseline values, which is a level change as well as a trend. (d) misidentifies the vertical line, which marks a phase change and is why the data paths are not connected across it.

After two treatment sessions, a caregiver looks at Rosa's graph and asks the RBT whether the program is working. Both points sit below the baseline values. What is the best response?

• a.Say that two points are too few to show a trend and that the BCBA reviews progress✓
• b.Say that the program is working because both points fell below the baseline level
• c.Say that the trend is decreasing and predict how many sessions remain in the plan
• d.Say that progress questions must be referred to the BCBA before anything is answered

(a) is correct: describing what the graph does and does not yet show is within the RBT's role, and two data points cannot establish a trend, so the honest answer names that limit and points to the person who evaluates progress. (b) overinterprets two points, which may reflect normal variability rather than treatment effect. (c) compounds the same error and adds a prediction about the course of treatment, which is a clinical judgment the RBT does not make. (d) is unnecessary deflection: the RBT can accurately describe the data and the review process without interpreting outcomes, and refusing to say anything damages the working relationship with the family.

A BCBA tells the RBT that baseline will continue until the data path is stable. After five sessions the values read 4, 9, 3, 10, and 5. What does the graph show?

• a.A stable baseline, because the values stay within a narrow band
• b.An increasing trend, because the last value is above the first one
• c.A decreasing trend, because the highest value came in the middle
• d.An unstable baseline, because the values vary widely across sessions✓

(d) is correct: the values swing between 3 and 10 with no direction, so the path is variable and baseline has not yet met the stability criterion. (a) is wrong because a range of 3 to 10 is not a narrow band. (b) is plausible because 5 is above 4, but a trend is read from the whole path, not from the first and last points. (c) is wrong because the position of a single high value does not establish a downward slope.

Which three features are used to describe a graphed data path?

• a.Reliability, fidelity, and the agreement between two independent observers
• b.Level, trend, and variability of the data points across the sessions✓
• c.Frequency, duration, and latency of the target behavior being recorded
• d.Baseline, treatment, and maintenance phases shown along the x-axis

(b) is correct: level describes where the data sit, trend describes the direction of the path, and variability describes how much the points bounce — together they summarize what a graph shows. (a) names data-quality concepts, which matter but describe how data were collected rather than what the path looks like. (c) names measurement procedures, which determine what is plotted rather than how the path is described. (d) names conditions, which are labeled on the graph but are not features of the data path itself.

An RBT gets busy during a session and reconstructs the frequency data from memory during the drive home. The counts look about right. What is the main risk?

• a.The counts will be recorded as a rate rather than as a raw frequency
• b.The counts will belong to the caregiver rather than to the RBT's record
• c.The counts may be inaccurate, and a working plan may be changed on them✓
• d.The counts will need a second observer before they can be graphed at all

(c) is correct: unreliable data lead to unreliable decisions — a clinician looking at inflated or deflated numbers may drop an effective procedure or continue an ineffective one. (a) is wrong because how the number is summarized is unrelated to when it was written down. (b) is wrong because the RBT still authors the record; the problem is its accuracy, not its ownership. (d) is plausible because agreement checks improve confidence in data, but a second observer is not a precondition for graphing, and it would not repair data written from memory.

Two RBTs collect data on the same learner's 'disruption.' One counts each shout; the other counts each minute containing shouting. Their graphs disagree sharply. What is the underlying problem?

• a.The two RBTs are not using the same definition and measurement rule✓
• b.The two RBTs are working on different days, so the data cannot match
• c.The two RBTs need to graph the results on two separate line graphs
• d.The two RBTs should average their two totals before entering the data

(a) is correct: one is counting responses and the other is scoring intervals, so the two data sets are not measuring the same thing and cannot be compared or combined. (b) is plausible because behavior does vary day to day, but that would produce differences in size, not two incompatible measures. (c) is wrong because splitting the graphs preserves the inconsistency rather than resolving it. (d) is the worst option: averaging a count with an interval score produces a number that means nothing.

An RBT has been delivering a token after every third correct response, although the written plan specifies a token after every correct response. Progress has stalled and the BCBA is considering dropping the procedure. What is the risk created by the RBT's practice?

• a.The learner will earn tokens too quickly and lose interest in them
• b.The data will need to be collected by a second observer next session
• c.The graph will show variability that must be relabeled as a new phase
• d.A procedure that was never run as written may be judged ineffective✓

(d) is correct: when the procedure delivered differs from the procedure described, the flat data describe the RBT's version, not the plan, so an effective procedure can be abandoned for the wrong reason. (a) reverses the effect of the error — the learner is earning tokens less often than the plan specifies, not more. (b) is plausible because agreement checks are part of data quality, but the problem here is implementation, not observation. (c) is wrong because a phase change marks a planned condition change, not an unreported drift in how a procedure was run.

Why does poor procedural fidelity threaten the value of the data?

• a.Data collected with poor fidelity cannot be plotted on a line graph
• b.Decisions get made about a procedure that was not actually delivered✓
• c.Data collected with poor fidelity must be reported to the certifying body
• d.Decisions get delayed because a second observer must repeat the session

(b) is correct: the graph is only meaningful if it reflects the procedure as written; when implementation drifts, the team draws conclusions about something that never happened as described. (a) is wrong because such data can still be plotted, which is precisely the danger — they look identical to good data. (c) is wrong because fidelity problems are addressed through supervision and training within the workplace. (d) is plausible because fidelity issues can prompt retraining and re-measurement, but the core threat is invalid decisions rather than scheduling delay.

Following the BCBA's written protocol, an RBT places two items on the table at a time, lets Zoe choose one, records the choice, and repeats until every item has been presented with every other item. Which preference assessment is this?

• a.Free-operant assessment, timing how long Zoe engages with each item
• b.Paired-stimulus assessment, presenting every item against every other✓
• c.Multiple stimulus without replacement, removing each selected item
• d.Single-stimulus assessment, presenting one item at a time for approach

(b) is correct: presenting items two at a time until every possible pair has been shown is the defining arrangement of a paired-stimulus, or forced-choice, assessment, and it produces a preference ranking based on how often each item was selected. (a) is plausible because both formats produce a ranking, but free-operant never restricts access or forces a choice — it measures engagement time with freely available items. (c) is plausible because MSWO also removes items, but MSWO presents an array of several items at once rather than pairs. (d) is wrong because two items are on the table each trial, not one.

An RBT sets out six items in a row. After Ben picks one and uses it briefly, the RBT removes that item, rearranges the rest, and presents the smaller array again, continuing until the items are gone. Which assessment is being conducted?

• a.Multiple stimulus without replacement, since chosen items are removed✓
• b.Multiple stimulus with replacement, since the array stays the same size
• c.Paired-stimulus assessment, since items compete against one another
• d.Free-operant assessment, since Ben has access to all items at once

(a) is correct: presenting an array, removing the chosen item, and re-presenting the remainder is multiple stimulus without replacement, and the order of selection yields a full preference hierarchy. (b) is plausible because both are array formats, but with replacement the selected item goes back and the array size does not shrink. (c) is plausible because items do compete in both formats, but a paired-stimulus assessment shows exactly two items per trial. (d) is wrong because free-operant does not remove items or require selections at all.

An RBT presents an array of five items. After Nina selects one, the RBT returns that item to the array, rearranges the positions, and presents all five again on the next trial. Which assessment is this?

• a.Multiple stimulus without replacement, since the array is rearranged
• b.Paired-stimulus assessment, since the positions change between trials
• c.Free-operant assessment, since all five items remain available to Nina
• d.Multiple stimulus with replacement, since the selected item goes back✓

(d) is correct: returning the chosen item to the array so the array size stays constant is what 'with replacement' means. (a) is plausible because both formats rearrange positions between trials, but without replacement the chosen item is removed. (b) is wrong because five items are shown at a time rather than two. (c) is plausible because the items stay in play, but in a free-operant assessment the learner moves among freely available items and no trials or selections are arranged.

A BCBA's protocol tells the RBT to place several items around the room, let Ravi move and play freely for ten minutes, and time how long he engages with each item. No item is ever removed or withheld. Which assessment is this?

• a.Paired-stimulus assessment, scored by which item is chosen each trial
• b.Multiple stimulus without replacement, scored by order of selection
• c.Free-operant assessment, scored by time engaged with each available item✓
• d.Single-stimulus assessment, scored by whether Ravi approaches an item

(c) is correct: free access to all items with no removal or trial structure, scored by duration of engagement, is a free-operant preference assessment. (a) is plausible because both yield preference information, but paired-stimulus requires two items per trial and a forced choice. (b) is plausible because MSWO also uses several items, but it removes each selected item and scores selection order rather than engagement time. (d) is wrong because single-stimulus shows one item at a time and records approach rather than duration.

Because Tomas becomes upset when he must choose between items, the BCBA's protocol has the RBT present one item at a time and record whether Tomas approaches it. Which assessment format is this?

• a.Single-stimulus assessment, recording approach to one item per trial✓
• b.Paired-stimulus assessment, recording a choice between two options
• c.Free-operant assessment, recording the time spent with each option
• d.Multiple stimulus with replacement, recording selection from an array

(a) is correct: presenting one item per trial and scoring whether the learner approaches it is the single-stimulus, or successive-choice, format, which is often selected for learners who struggle to choose between options. (b) is plausible because paired-stimulus is the most common format, but it requires exactly the choice Tomas finds difficult. (c) is plausible because free-operant also avoids forced choices, but it presents many items at once rather than one at a time. (d) is wrong because an array format again requires choosing among competing items.

Every time the RBT removes a toy during a preference assessment, Mia screams and grabs for it. The BCBA wants a format that does not require removing items or blocking access. Which assessment should the RBT expect the BCBA to select?

• a.Paired-stimulus, since only two items are on the table at any time
• b.Multiple stimulus without replacement, since the array keeps shrinking
• c.Free-operant, since items stay available and nothing is taken away✓
• d.Single-stimulus, since each item is shown and then cleared from view

(c) is correct: a free-operant format leaves items continuously available and measures engagement time, so no removal is needed and the problem behavior is not evoked. (a) is plausible because only two items are out, but the unselected item is still taken away each trial. (b) is the format that most directly causes the problem, since every trial removes an item. (d) is plausible because one item seems simpler, but each item is presented and then withdrawn, which is the same removal that upsets Mia.

After running the assessment the BCBA specified, the RBT has a record of the order in which Kofi selected each of eight items until the array was empty. What does this record provide?

• a.The function of Kofi's behavior with each of the eight items tested
• b.A ranked hierarchy of preference from the most to the least selected✓
• c.A confirmation that the top item will act as a reinforcer in teaching
• d.A measure of how long Kofi engaged with each of the items presented

(b) is correct: an array assessment that removes each selected item produces a full ranking, because the order of selection orders the items from most to least preferred. (a) is wrong because preference assessments identify what a learner chooses, not why behavior occurs; function comes from functional assessment. (c) is plausible and tempting, but preference and reinforcer effect are different things — the item's effect on behavior has to be demonstrated during teaching. (d) is wrong because selection order was recorded, not engagement duration.

A preference assessment ranks the bubble wand first for Ellis. During teaching, delivering the bubble wand does not increase Ellis's correct responding. What is the most accurate conclusion?

• a.The preference assessment must have been conducted incorrectly by the RBT
• b.The bubble wand should be delivered more often until responding increases
• c.The preference ranking is invalid, so the assessment results should be discarded
• d.A high-preference item does not always function as a reinforcer in teaching✓

(d) is correct: a preference assessment shows what a learner chooses at that moment, while a reinforcer is defined by its effect on future behavior, so a top-ranked item can still fail to strengthen responding. (a) is plausible because procedural errors do happen, but a valid assessment can still produce an item that does not function as a reinforcer. (b) is plausible because thin reinforcement can weaken responding, but delivering an ineffective item more often does not make it effective. (c) overcorrects: the ranking is still useful information for the team even though it did not predict the effect.

The BCBA's plan says to run a brief multiple-stimulus assessment at the start of each session rather than relying on last month's results. What is the reason for this?

• a.Repeating the assessment keeps the RBT's implementation skills current
• b.Repeating the assessment is required before any session data are graphed
• c.Preferences shift over time, so yesterday's ranking may not hold today✓
• d.Preferences must be confirmed by the caregiver before each new session

(c) is correct: what a learner will work for changes with satiation, mood, illness, and recent access, so a brief pre-session assessment keeps the reinforcers current. (a) is plausible because repeated practice does maintain skills, but the assessment is run for the learner's benefit, not the RBT's. (b) is wrong because graphing session data does not depend on running a preference assessment. (d) is plausible because caregiver input is valuable, but caregiver confirmation is not what the repeated assessment is for.

During a paired-stimulus assessment, an RBT notices that Dani picks the item on her right on almost every trial regardless of what is presented. What should the RBT do within the protocol?

• a.Continue the assessment while alternating the left-right placement of items✓
• b.Continue the assessment but present only the items Dani has not yet chosen
• c.Stop the assessment and score the right-side items as the preferred ones
• d.Stop the assessment and record that Dani has no preference among the items

(a) is correct: alternating which side each item appears on is a standard part of the procedure and is exactly how a side bias is controlled, so the RBT can keep running the assessment as written. (b) is plausible because it seems to give unchosen items a chance, but dropping items breaks the pairing structure and destroys the ranking. (c) treats a position bias as a preference result, which reports the table arrangement rather than Dani's preferences. (d) draws a conclusion the data do not support and abandons an assessment that can still be completed correctly.

Twice during an assessment, Amir sits without approaching either item for the full response interval. The written protocol says to record no selection and move on. What should the RBT do?

• a.Guide Amir's hand toward one of the two items so the trial can be scored
• b.Repeat the same trial until Amir finally selects one of the two items
• c.Substitute two edible items so that a selection becomes more likely
• d.Record no selection as the protocol states and move to the next trial✓

(d) is correct: no selection is itself data, the protocol anticipates it, and running the assessment as written is what keeps the results interpretable. (a) is plausible because a scored trial feels more useful than a blank one, but prompting a choice records the RBT's selection rather than Amir's. (b) is plausible because persistence sometimes helps, but repeating trials changes the procedure and can turn the assessment into a test of endurance. (c) changes the stimulus set mid-assessment, which makes the results incomparable with the rest of the trials.

An RBT thinks a free-operant format would work better than the paired-stimulus assessment the BCBA assigned for today. The session starts in ten minutes. What should the RBT do?

• a.Run the free-operant format, since it also produces preference data
• b.Run the assigned paired-stimulus format and raise the idea afterward✓
• c.Run both formats in the session and compare which one ranks items better
• d.Postpone the assessment and ask the BCBA which format to use today

(b) is correct: the assessment format is a clinical decision already made in writing, so the RBT implements it with fidelity and brings the observation forward afterward, when it can be discussed and acted on properly. (a) substitutes the RBT's judgment for the supervisor's and produces data the BCBA did not request. (c) doubles the session demand on the learner and confounds the results, since running one format first affects the second. (d) is unnecessary escalation: the format is already specified in writing, so there is nothing to clarify, and postponing loses a scheduled session for a question that has already been answered.

An RBT finishes a paired-stimulus assessment in which each of five items appeared in eight trials. The BCBA asks how the results should be summarized. What should the RBT report?

• a.The percentage of trials in which each item was selected when presented✓
• b.The total time the learner spent engaging with each item today
• c.The order in which each item was removed from the array during trials
• d.The number of prompts needed before the learner selected any one item

(a) is correct: in a paired-stimulus assessment each item appears a fixed number of times, so dividing selections by presentations gives a percentage that ranks the items fairly. (b) describes how a free-operant assessment is scored, which was not the format used. (c) describes how an array assessment without replacement is scored; no array was presented here. (d) is plausible because prompt counts appear on many data sheets, but prompting has no place in a preference assessment, where the learner's unprompted choice is the measure.

A BCBA's protocol tells the RBT to run separate assessments for edible items and for toys rather than mixing them in one array. What is the rationale the RBT should understand?

• a.Mixing categories makes the assessment take longer than the plan allows
• b.Mixing categories is prohibited whenever a learner has a feeding program
• c.Edibles can dominate an array and hide preferences among the other items✓
• d.Edibles can only be assessed with the free-operant format, never an array

(c) is correct: when food and leisure items compete directly, food is often chosen first every time, so the relative ranking of the toys is never revealed; separating the categories preserves that information. (a) is plausible because two assessments do take longer than one, but the reason is validity rather than time. (b) is plausible because feeding programs do constrain what can be offered, but the separation is standard practice regardless. (d) is wrong because edibles are routinely assessed in paired-stimulus and array formats.

An RBT runs a multiple-stimulus-with-replacement assessment and finds that Priya selects the same item on nearly every trial. The BCBA asks what the data can and cannot show. What is accurate?

• a.The data rank all of the items in the array from most to least preferred
• b.The data show the duration of engagement with each item in the array
• c.The data show that the top item will function as a reinforcer in teaching
• d.The data identify the top item but say little about the remaining ones✓

(d) is correct: because the chosen item is replaced and remains available, a strongly preferred item can be selected on nearly every trial, leaving the relative standing of the other items untested. (a) is plausible because array assessments often produce rankings, but a full hierarchy requires removing each selected item, as in the without-replacement format. (b) is wrong because selections were recorded rather than engagement time. (c) confuses preference with reinforcer effect, which has to be demonstrated during teaching.

What is the defining feature of a free-operant preference assessment?

• a.Items are presented two at a time and the learner picks one of them
• b.Items remain freely available and engagement time is what is measured✓
• c.Items are removed from the array once the learner has selected them
• d.Items are presented one at a time and approach responses are recorded

(b) is correct: in a free-operant assessment the learner has continuous access to the items, nothing is removed or withheld, and the measure is how long the learner engages with each one. (a) describes the paired-stimulus format. (c) describes the multiple-stimulus-without-replacement format. (d) describes the single-stimulus format; all three are legitimate preference assessments, which is what makes them plausible, but only free-operant leaves access uninterrupted.

An RBT administers items from a curriculum-based assessment exactly as the BCBA's protocol directs and records each response. Afterward the caregiver asks what the results mean for next year's goals. What is the best response?

• a.Summarize the scores and describe which skills appear to be delayed
• b.Explain that assessment results cannot be shared with family members
• c.Record the responses as directed and refer the question to the BCBA✓
• d.Compare the answers with those of another learner the RBT supports

(c) is correct: administering items and recording responses is the RBT's part of the assessment, while interpreting results and setting goals is the supervisor's, so referring the caregiver's question is both accurate and respectful of the family's interest. (a) crosses into interpretation, which the RBT is not the one to provide even when the pattern looks obvious. (b) is plausible because confidentiality rules are strict, but the caregiver is entitled to discuss the client's own assessment with the responsible clinician. (d) discloses another client's information and compares learners in a way that has no clinical value.

During a baseline probe of Nia's skills, the protocol says to present each item once, wait, and record the response without prompting. Nia hesitates on an item the RBT is sure she can do. What should the RBT do?

• a.Record no response after the wait time and move to the next item✓
• b.Offer a gestural prompt so that Nia's real ability is captured well
• c.Stop the probe and contact the supervisor before scoring this item
• d.Score the item correct because Nia has done it in previous sessions

(a) is correct: a probe measures unprompted performance, so recording no response and continuing is exactly what the protocol asks for and keeps the baseline honest. (b) is plausible because the RBT wants to reflect Nia's true skill, but a prompted response is not a baseline response and inflates the starting point. (c) is unnecessary escalation: the protocol already states what to do when no response occurs, so stopping the probe interrupts the assessment for a situation that is covered in writing. (d) records a response that did not happen, which is falsified data no matter how confident the RBT is.

A new RBT asks why the team spends two sessions on a curriculum-based assessment before teaching begins. What is the best explanation?

• a.It documents the hours of service delivered before teaching starts
• b.It identifies existing skills and gaps so goals can be built on them✓
• c.It establishes the function of any problem behavior the learner shows
• d.It confirms the learner's diagnosis before an intervention is selected

(b) is correct: a skills assessment maps what the learner can already do and where the gaps are, which is what allows the supervisor to select goals at the right level. (a) is plausible because service hours are documented, but that is a billing and record-keeping matter rather than the purpose of the assessment. (c) describes functional assessment, a different procedure aimed at problem behavior. (d) is wrong because diagnosis is outside the scope of behavior-analytic service delivery.

A BCBA wants to know how Ravi actually interacts with peers at recess, not how his teacher rates his skills. What should the RBT be asked to do?

• a.Interview the teacher using the rating scale attached to the protocol
• b.Ask Ravi which peers he plays with and record his answers verbatim
• c.Review Ravi's school file for previous notes about peer interaction
• d.Observe Ravi at recess and record the peer interactions as defined✓

(d) is correct: the BCBA asked for what actually happens, and direct observation in the natural setting records the behavior as it occurs rather than someone's recollection of it. (a) is a legitimate indirect method, but a rating scale is exactly the teacher's impression the BCBA said she did not want. (b) is also indirect and adds the further problem that self-report may not match observed behavior. (c) is plausible because records can be informative, but old notes describe past impressions rather than present interactions.

Halfway through an assessment session, an RBT notices that Mina misses several items in a row and wants to start teaching those skills right away. What should the RBT do?

• a.Finish the assessment as written, since teaching begins after goals are set✓
• b.Begin teaching the missed items right away to use the session well
• c.Stop the session and ask the supervisor whether teaching may begin now
• d.Rescore the missed items as correct once Mina performs them with a prompt

(a) is correct: the assessment is measuring current performance, and teaching in the middle of it changes what the remaining items measure, so completing it as written is what makes the results usable. (b) is plausible because teaching feels more productive than watching errors, but it contaminates the assessment and preempts the goal-setting the assessment exists to inform. (c) is unnecessary escalation: the protocol already specifies that the assessment runs to completion, so the situation is covered, and the RBT can raise the observation at the next supervision contact. (d) records prompted performance as unprompted, which falsifies the baseline.

During an assessment, an RBT sees Theo spontaneously label three colors at snack time, although he missed those items during the formal probe. What should the RBT do with this observation?

• a.Change the probe scores to correct, since the skill was clearly present
• b.Ignore the snack observation, since only probe items count as real data
• c.Record the observation objectively and report it to the supervising BCBA✓
• d.Reteach the color labels at snack so that the skill is strengthened further

(c) is correct: what the RBT saw is genuinely useful information about Theo's skills, and the right handling is to document it in observable terms and pass it to the supervisor, who decides what it means for goals. (a) alters probe data with information collected under different conditions, which misrepresents what the probe measured. (b) is plausible because probe integrity matters, but discarding a relevant observation deprives the team of information it would want. (d) starts teaching a target that has not been selected yet and does so during an assessment phase.

A protocol asks the RBT to record whether a two-year-old client performs a list of skills that are typical for her age range. Which kind of assessment is this?

• a.A functional analysis of the behaviors that appear on the skill list
• b.A preference assessment of the activities used to present the items
• c.A permanent product review of the work samples the client produced
• d.A developmental assessment comparing skills with age expectations✓

(d) is correct: comparing a learner's performance against skills expected at a given age is a developmental assessment, one of the skill-assessment types an RBT participates in. (a) is wrong because a functional analysis manipulates conditions to test why problem behavior occurs, not whether skills are present. (b) is wrong because no items are being chosen or ranked for preference. (c) is plausible because products are sometimes scored during assessments, but here the RBT is scoring live performance against a milestone list.

An RBT reaches an item on the assessment protocol whose instructions are unclear, and has never administered it before. The session is still running. What should the RBT do?

• a.Administer the item using the RBT's best guess at what was intended
• b.Skip the item, note why it was skipped, and ask the BCBA about it✓
• c.Score the item as incorrect since the client did not respond to it
• d.Ask the caregiver present how the item is usually given to the client

(b) is correct: this situation is not covered by the written protocol and the RBT has not been trained on the item, so skipping it, documenting the reason, and seeking direction protects the integrity of the assessment and stays inside the RBT's competence. (a) improvises an untrained procedure, and a guessed administration produces a score no one can interpret. (c) records a result for an item that was never properly presented, which is inaccurate data. (d) is plausible because caregivers often know the client well, but a caregiver is not the source of protocol direction, and the item may never have been administered before.

Two RBTs administer the same skill assessment to Luca on different days and get very different results. The BCBA asks what could explain this. Which explanation is most likely?

• a.Luca's diagnosis changed between the two assessment sessions
• b.The assessment can only be given by the same RBT on both days
• c.The two RBTs administered or scored the items in different ways✓
• d.The assessment items are too easy to detect a real difference

(c) is correct: differences in how items are presented, how long the RBT waits, and how responses are scored are the most common source of disagreement between two administrations of the same assessment. (a) is wrong because a diagnosis does not change over two days and would not shift skill performance that quickly. (b) is plausible because consistency matters, but assessments are routinely administered by more than one trained person; what must be consistent is the procedure, not the person. (d) is plausible because ceiling effects do flatten results, but easy items would produce similar high scores rather than very different ones.

After completing the assessment, an RBT drafts a list of goals for the coming quarter and emails it to the caregiver before the BCBA has reviewed the results. Why is this a problem?

• a.Selecting goals from assessment results is the supervisor's responsibility✓
• b.Goals may only be shared with caregivers during a scheduled team meeting
• c.The assessment must be repeated by a second RBT before goals are drafted
• d.Caregiver input is not used when goals are selected from assessment data

(a) is correct: analyzing assessment results and choosing targets is a clinical decision the supervising behavior analyst makes, and an RBT who circulates goals ahead of that review is acting outside the role. (b) is plausible because communication is usually coordinated, but the timing of a meeting is not the issue; the authorship of the goals is. (c) is wrong because there is no requirement for a second administration before goals are written. (d) is wrong in the opposite direction: caregiver input is valued in goal selection, which is part of why the process belongs to the supervising clinician.

A BCBA asks the RBT to probe hand-washing in the clinic bathroom and again at the client's home before a goal is written. What is the reason for probing in both settings?

• a.Probing twice doubles the number of data points available for graphing
• b.Skills can differ across settings, so both probes describe the real level✓
• c.Probing at home is required whenever a caregiver has requested a goal
• d.Probing in two settings substitutes for a second observer's agreement

(b) is correct: a learner may complete a chain independently in one setting and not in another because the materials, layout, and cues differ, so probing both gives an accurate picture of the starting level. (a) is plausible because more data points are generally useful, but the purpose is coverage of settings rather than sample size. (c) is wrong because there is no such rule tied to caregiver requests. (d) is plausible because both involve a second look, but agreement checks compare two observers watching the same event, not one observer in two places.

What is the RBT's role in an assessment of skill strengths and deficits?

• a.Selecting which assessment instrument best fits the client's profile
• b.Interpreting the results and identifying which skills to target next
• c.Deciding when assessment data are sufficient to write the client's plan
• d.Administering items and recording responses as the protocol specifies✓

(d) is correct: the RBT participates in assessment by presenting items exactly as written and recording responses accurately, which is what makes the results usable. (a) is a clinical decision that belongs to the supervising behavior analyst, who matches the instrument to the client. (b) is interpretation, also the supervisor's responsibility, even when the RBT has strong impressions from running the items. (c) is plausible because the RBT sees the data first, but deciding that assessment is complete is part of the clinical judgment behind the plan.

A BCBA asks the RBT to write down what happened immediately before and immediately after each instance of Hana's screaming across the next three sessions. Which activity is the RBT carrying out?

• a.Descriptive assessment, recording antecedents and consequences observed✓
• b.Functional analysis, arranging conditions to test the behavior's function
• c.Indirect assessment, gathering reports from people who know the client
• d.Preference assessment, identifying items that may serve as reinforcers

(a) is correct: recording what precedes and follows behavior as it occurs in the natural environment is descriptive assessment, usually collected as ABC data, and it is a core part of the RBT's role in functional assessment. (b) is plausible because both aim at understanding behavior, but a functional analysis arranges and alternates conditions rather than observing the environment as it is. (c) is wrong because nothing is being gathered from interviews or rating scales. (d) is wrong because no items are being presented or ranked.

After two sessions of ABC data, an RBT notices that most screaming episodes were followed by attention from staff. The caregiver asks whether the screaming is 'for attention.' What is the best response?

• a.Confirm that the screaming is maintained by attention from the staff
• b.Say that the pattern is unclear and that more ABC data will be needed
• c.Explain that the RBT records the data and refer the question to the BCBA✓
• d.Suggest that staff stop responding to screaming until the pattern stops

(c) is correct: identifying the function of behavior is an interpretation the supervising behavior analyst makes, so the RBT accurately describes their own role and routes a fair question to the person who can answer it. (a) states a conclusion the RBT is not the one to draw, and a correlation in two sessions of ABC data does not establish function anyway. (b) is plausible because more data may indeed be collected, but it still has the RBT commenting on what the data show. (d) recommends an intervention, which changes the client's treatment without a plan and outside the RBT's scope.

An RBT writes in the antecedent column: 'Jamal wanted to avoid the worksheet.' The supervisor asks for a rewrite. Which entry belongs in the antecedent column?

• a.Jamal was in a bad mood before the worksheet was placed on the desk
• b.The RBT placed the worksheet on the desk and said, 'Do these three'✓
• c.Jamal was trying to get out of doing the worksheet that was assigned
• d.The worksheet was too hard for Jamal, so he began to protest loudly

(b) is correct: the antecedent column records the observable event that immediately preceded the behavior, and placing the worksheet down while giving an instruction is exactly that. (a) is plausible because mood is often mentioned in notes, but 'bad mood' is an inference no observer can verify. (c) repeats the original error by recording a purpose rather than an event. (d) mixes an inference about difficulty with the behavior itself, which belongs in the behavior column.

A BCBA gives the RBT a grid with the day divided into 30-minute blocks and asks the RBT to shade any block in which aggression occurred, across two weeks. What is this tool?

• a.An ABC narrative form used to describe each episode in the RBT's words
• b.A functional analysis form used to compare test and control conditions
• c.A permanent product record used to count the results the behavior left
• d.A scatterplot used to reveal times of day when the behavior clusters✓

(d) is correct: a scatterplot marks whether behavior occurred in each time block across days, which makes patterns tied to time of day, activity, or staffing visible. (a) is plausible because both are descriptive tools the RBT completes, but an ABC form captures the events around each episode rather than a grid of time blocks. (b) is wrong because no conditions are being arranged or alternated. (c) is wrong because aggression leaves no durable product being counted here.