BAS BAS Data Collection and Analysis

Question 1

Which data collection method involves recording whether a target behavior occurred at least once during a specified time interval?

Accepted Answer

Partial-interval recording

Answer

Partial-interval recording marks an interval as positive if the behavior occurs at any point during that interval, which tends to overestimate behavior occurrence.

Question 2

A behavior analyst supervisor reviews a trainee's frequency data and notices a bimodal distribution. What does this most likely suggest?

Accepted Answer

Two distinct conditions or antecedents may be influencing the behavior

Answer

A bimodal distribution in behavioral data often indicates that two separate conditions, settings, or antecedents are producing different rates of the target behavior.

Question 3

Which visual analysis feature refers to the consistency of data points within a phase of a graph?

Accepted Answer

Variability

Answer

Variability describes how much individual data points within a phase deviate from each other or from a central value, reflecting the stability of the behavior.

Question 4

When a supervisor trains staff on interobserver agreement (IOA), which formula is most appropriate for low-frequency behaviors measured with event recording?

Accepted Answer

Exact agreement IOA

Answer

Exact agreement IOA, also called occurrence/non-occurrence agreement, is preferred for low-frequency behaviors because it avoids inflated agreement from shared non-occurrence intervals.

Question 5

A supervisor notices that data collected by one staff member consistently trend upward regardless of the intervention phase. This is an example of which measurement problem?

Accepted Answer

Observer drift

Answer

Observer drift occurs when an observer's recording criteria gradually shift from the original operational definition, producing systematic bias in the data over time.

(BAS) Behavior Analyst Supervisor Practice Test

(BAS) Behavior Analyst Supervisor Practice Test

BAS BAS Data Collection and Analysis