BACB Experimental Design and Research

Question 1

Which experimental design feature in single-subject research demonstrates experimental control by showing that behavior changes only when the independent variable is applied?

Accepted Answer

Replication of effect

Answer

Random assignment

Answer

Group comparison

Answer

Parametric statistics

Question 2

In an ABAB reversal design, what does the second 'A' phase demonstrate?

Accepted Answer

The behavior returns toward baseline when the intervention is removed, demonstrating experimental control

Answer

A new intervention is added

Answer

Generalization has occurred

Answer

A follow-up is conducted

Question 3

Which design introduces the independent variable to different behaviors, participants, or settings at staggered time points to demonstrate experimental control without reversing treatment?

Accepted Answer

Multiple baseline design

Answer

Reversal design

Answer

Alternating treatments design

Answer

Changing criterion design

Question 4

Which single-subject design is most appropriate for evaluating the relative effectiveness of two or more interventions in rapid succession?

Accepted Answer

Alternating treatments design

Answer

Multiple baseline design

Answer

Reversal (ABAB) design

Answer

Changing criterion design

Question 5

In a changing criterion design, experimental control is demonstrated when behavior matches what?

Accepted Answer

Each successive performance criterion specified in the design

Answer

The original baseline level at each phase

Answer

The behavior of a matched control participant

Answer

A normative performance standard

Question 6

What is the primary internal validity threat that a multiple baseline design controls for?

Accepted Answer

Maturation and history confounds addressed by staggered baselines

Answer

Carryover effects between treatments

Answer

Observer drift in data collection

Answer

Schedule thinning effects