RBT Measurement Quiz

1. An RBT is teaching a client to wash their hands and collects data using a task analysis with 8 steps. During baseline, the client completed 2 steps independently. After two weeks of intervention, the client completed 6 steps independently. The behavior analyst asks the RBT for the percentage increase in independent steps. What is the correct calculation?

2. Elijah's therapist is tracking how long he can maintain eye contact during conversation. On Monday, Elijah maintained eye contact for 5 seconds. On Tuesday, it was 8 seconds. On Wednesday, it was 7 seconds. On Thursday, it was 12 seconds. And on Friday, it was 10 seconds. What is the mean duration of Elijah's eye contact across the week?

3. An RBT is implementing a shaping procedure to teach a client to tie their shoelaces. The RBT breaks down the task into small steps and collects data on which step the client can complete independently. After several sessions, the data shows that the client has progressed from step 3 to step 8 (out of 10 total steps). What type of measurement is the RBT using to track this progress?

4. An RBT is using a 15-second whole interval recording to measure sustained attention during a 10-minute reading activity. For the behavior to be scored as occurring during an interval, the client must demonstrate attention for the entire 15-second interval. If the client showed sustained attention during 25 out of 40 intervals, what percentage of the observation period did the client demonstrate the target behavior?

5. An RBT is conducting a preference assessment and wants to determine which of 5 toys a child prefers the most. The RBT presents all 5 toys simultaneously and allows the child to select one toy at a time, removing that toy after each selection until all toys have been selected. What type of preference assessment is being conducted?

6. An RBT collects data on a child's tantrums during 15-minute therapy sessions over four weeks. Which graph would be most appropriate to visually analyze changes in the frequency of tantrums over time?

7. An RBT is collecting data on a client's self-injurious behavior using a 10-second partial interval recording system during a 20-minute observation. The behavior was observed in 45 out of 120 intervals. What is the percentage of intervals with the target behavior?

8. Lucretia, an RBT, needs to measure how many math problems her client completes correctly during each 15-minute work session. Which of the following measurement procedures would be most appropriate?

9. An RBT is implementing a differential reinforcement of alternative behavior (DRA) intervention for a client who screams to get attention. The RBT is teaching the client to raise their hand instead. After 4 weeks of intervention, the data shows that screaming has decreased from an average of 15 times per hour to 3 times per hour, while hand-raising has increased from an average of 2 times per hour to 12 times per hour. Which type of graph would best display both behaviors' changes over time?

10. Sofia, an RBT, is collecting data on her client's vocal stereotypy. During a 30-minute session, she tallies each instance of the behavior and counts 45 occurrences. Which measurement dimension is Sofia using, and what would be the correct rate calculation?

11. An RBT is using a data sheet with the following columns: Client Name, Date, Target Behavior, Time Started, Time Ended, Duration, Antecedent, Behavior, Consequence. What type of data collection system is the RBT using?

12. An RBT is recording data on a client's aggressive behavior using 5-minute partial interval recording during a 60-minute session. The client exhibited aggression during 6 intervals. What percentage of intervals contained the target behavior?

13. Ryan's teacher wants to know if he is raising his hand more frequently during class discussions. For 5 consecutive days, she counts the number of times Ryan raises his hand during a 30-minute discussion period. The counts are: Monday - 3, Tuesday - 4, Wednesday - 5, Thursday - 7, Friday - 8. Which summary statistic would be most useful to see if there is a trend in Ryan's behavior?

14. An RBT is conducting a time-sampling observation of a student's on-task behavior during a 30-minute math class. The RBT observes for the first 10 seconds of each 1-minute interval and records whether the behavior occurred at any point during those 10 seconds. What type of time sampling is being used?

15. An RBT is implementing a differential reinforcement of low rates of behavior (DRL) procedure for a client who raises their hand excessively during class. The goal is to reduce hand-raising to no more than 5 times per hour. Which measurement dimension is most appropriate for evaluating the effectiveness of this intervention?

16. During a 10-minute observation session, an RBT records that Mason engaged in hand-flapping for a total of 4 minutes and 30 seconds across multiple instances. The behavior analyst asks the RBT for the percentage of time Mason engaged in hand-flapping. What is the correct calculation?

17. During a session, an RBT is teaching a child to wait appropriately when told "just a minute" before receiving a requested item. The RBT is measuring how long the child can wait without engaging in problem behavior. Which dimension of measurement is the RBT using?

18. During discrete trial training, an RBT records the number of trials in which a client responds correctly and independently (without prompts). Out of 20 trials, the client responded correctly and independently in 16 trials. What is the appropriate way to report this data?

19. An RBT is measuring how long it takes a client to transition from the play area to the work table after being instructed to do so. During baseline, it took an average of 2 minutes and 15 seconds. After implementing an intervention, it now takes an average of 45 seconds. Which dimension of measurement is being used, and what is the percentage decrease in the measured value?

20. During a discrete trial training session focused on receptive identification of colors, an RBT collects data on prompt levels required for correct responses. The data shows: Independent: 12 trials, Gestural prompt: 5 trials, Physical prompt: 3 trials. What percentage of trials were completed with no prompts (independently)?

21. During a functional analysis, an RBT notices that a client's problem behavior occurs on average every 45 seconds when attention is withheld. What dimension of measurement describes the time between consecutive instances of the behavior?

22. An RBT is using momentary time sampling to measure a client's on-task behavior during a 45-minute academic session. The RBT observes the client at the end of each 1-minute interval (45 total intervals) and records whether the client is on-task at that precise moment. If the client was on-task during 36 of the 45 observations, which of the following statements is most accurate regarding this measurement?

23. During a discrete trial teaching session, an RBT records the following data on a client's response to 20 trials targeting identification of emotions: 12 independent correct responses, 5 correct responses with verbal prompts, 2 correct responses with model prompts, and 1 error. If independent correct responses are the goal, what percentage of trials met the criterion?

24. An RBT is using a 6-second partial interval recording system to measure a client's stereotypic behavior during a 5-minute observation period. If the behavior occurred during 25 intervals, what percentage of the observation period contained the target behavior?

25. An RBT is collecting data on a client's aggressive behavior using a 10-second partial interval recording system. During a 5-minute observation (30 intervals), aggression was recorded in 6 intervals. The next day, during a 10-minute observation (60 intervals), aggression was recorded in 9 intervals. Did the client's rate of aggression increase, decrease, or stay the same?

26. An RBT has been instructed to collect data on a client's "time on task" during 30-minute academic sessions. The behavior analyst wants to know the percentage of the session that the client actively engages with the academic materials. Which measurement system would provide the most direct and accurate measure of this dimension?

27. An RBT is collecting data on how quickly a client responds to greetings from peers. The client's response time has been decreasing each session, from 8 seconds initially to 2 seconds in the most recent session. Which graph would best display this improvement over time?

28. An RBT is collecting data on a child's self-injurious behavior (SIB) during a functional analysis. During the 10-minute attention condition, the child engaged in SIB 15 times. During the 10-minute escape condition, the child engaged in SIB 35 times. During the 10-minute alone condition, the child engaged in SIB 5 times. During which condition did the behavior occur at the highest rate?

29. An RBT is observing a student in a classroom and needs to record whether the student is engaging in on-task behavior at specific moments in time. The RBT decides to look up every 2 minutes and immediately record if the behavior is occurring at that exact moment. What type of time sampling procedure is the RBT using?

30. An RBT is measuring the latency between delivering an instruction and a client complying with the instruction. The RBT collected the following data (in seconds) across 5 trials: 12, 8, 15, 10, 5. What is the median latency for these trials?

31. An RBT needs to collect data on hand-raising behavior during a classroom observation. The behavior analyst asks for data using a partial interval recording with 30-second intervals for a 15-minute observation period. If the behavior occurs at any point during an interval, how many total intervals will the RBT need to record?

32. An RBT is collecting data on a client's out-of-seat behavior during 60-minute therapy sessions. The RBT records that the client was out of their seat from 10:05-10:08, 10:15-10:17, 10:32-10:36, and 10:50-10:53. What percentage of the session did the client engage in out-of-seat behavior?

33. An RBT needs to decide which measurement system to use for a client who engages in brief instances of hair-pulling. Each instance typically lasts only 1-2 seconds but may occur many times throughout a session. Which measurement system would be most appropriate?

34. An RBT is using whole interval recording during 10-second intervals to measure a client's on-task behavior in a 5-minute observation period. The client must be engaged in the target behavior for the entire interval to score a "+" for that interval. Out of 30 intervals, the client scored "+" for 18 intervals. What percentage of time was the client on-task according to this measurement system?

35. An RBT collects the following data on a client's tantrum behavior across five consecutive 60-minute sessions: Session 1: 4 tantrums, Session 2: 2 tantrums, Session 3: 5 tantrums, Session 4: 1 tantrum, Session 5: 3 tantrums. What is the mean and range of tantrums per session?

36. An RBT conducts a multiple-stimulus without replacement (MSWO) preference assessment with a client. The client selects items in the following order: toy car, puzzle, book, blocks, crayons. How should the RBT score these items to determine the preference hierarchy?

37. An RBT is collecting data on a client's engagement with academic tasks using a 1-minute momentary time sampling procedure during a 30-minute session. The client was engaged in 22 out of 30 intervals. The next day, using the same procedure during a 45-minute session, the client was engaged in 30 out of 45 intervals. Did the client's engagement improve, decline, or stay the same?

38. An RBT is collecting data on a client's correct implementation of handwashing steps. The task analysis includes 8 steps, and the client completed 6 steps correctly without prompting during the first session. After two weeks of intervention, the client completed all 8 steps correctly without prompting. Which measurement approach is being used, and what is the percentage increase in correct performance?

39. An RBT is collecting data on a client's self-stimulatory behavior during 30-minute sessions. The behavior occurs continuously for variable durations throughout the session. The RBT wants to measure what percentage of the session the client engages in the behavior. Which measurement system would be most appropriate?

40. Marco, an RBT, is conducting a continuous measurement of a client's vocal protests during a 30-minute session. He records the start and stop time of each instance of vocal protest. The client protested from 5:20-5:45, 12:10-13:05, and 24:15-26:40. What is the total duration of vocal protests during the session?

41.

During a functional analysis, an RBT collects the following rate data for a client's self-injurious behavior across three 10-minute conditions:

• Attention condition: 0.3 instances per minute
• Escape condition: 1.2 instances per minute
• Alone condition: 0.1 instances per minute

The BCBA asks the RBT, "In which condition was the rate of self-injury at least three times higher than in the alone condition?" What is the correct answer?

42. An RBT is implementing an intervention to increase a client's eye contact during conversations. The RBT collects the following data on the average duration of eye contact (in seconds) across five consecutive sessions: 2, 3, 5, 8, 12. What visual representation would best show this behavior change over time?

43. Isabella, an RBT, is collecting data on a client who engages in property destruction. During a functional analysis, Isabella records the frequency of property destruction across three different 10-minute conditions: attention, demand, and alone. The client exhibited property destruction 8 times during attention, 15 times during demand, and 2 times during alone. Based on this rate data, which condition appears to be maintaining the property destruction behavior?

44. An RBT is observing a student during recess and wants to measure peer interactions. The RBT decides to look up every 30 seconds and immediately record whether the student is interacting with peers at that precise moment. During a 15-minute observation (30 intervals), the RBT records peer interaction in 12 intervals. What percentage of momentary time samples included peer interaction, and what does this suggest about the student's behavior during recess?

45. Olivia, an RBT, is implementing a token economy system where her client earns tokens for completing math problems. She notices that when she delivers tokens immediately after each correct problem, her client completes more problems than when she delivers all tokens at the end of the session. What measurement dimension would best capture this effect?

46. An RBT needs to collect data on a client's engagement with toys during free play. The behavior analyst has specified using momentary time sampling with 1-minute intervals during a 15-minute observation. When calculating the percentage of intervals with engagement, the number of intervals with engagement should be divided by:

47. Jordan's behavior intervention plan requires data collection on the time it takes from when the instructor delivers an instruction to when Jordan begins to comply. What dimension of measurement should the RBT use?

48.

An RBT is implementing an intervention to decrease tantrum behavior and increase appropriate requesting. The RBT collects frequency data during 2-hour sessions and records the following data over five consecutive sessions:

Session 1: 8 tantrums, 3 appropriate requests Session 2: 6 tantrums, 5 appropriate requests Session 3: 5 tantrums, 8 appropriate requests Session 4: 3 tantrums, 10 appropriate requests Session 5: 2 tantrums, 12 appropriate requests

What does this data pattern suggest about the effectiveness of the intervention?

49. During a 15-minute classroom observation, an RBT uses a behavior rating scale to measure a student's disruptive behavior at the end of each 5-minute interval. The scale ranges from 0 (no disruption) to 4 (severe disruption). The ratings were: 3, 1, 0. What is the appropriate way to summarize this data?

50. An RBT is collecting data on a client's vocal stereotypy during 30-minute therapy sessions. In addition to measuring frequency, the RBT also rates the intensity of each occurrence on a scale from 1 (barely audible) to 5 (extremely loud). During today's session, the client engaged in vocal stereotypy 18 times with intensity ratings of: 3, 5, 2, 4, 3, 5, 2, 3, 4, 5, 3, 2, 4, 5, 3, 4, 5, 2. What was the modal intensity level of the client's vocal stereotypy?