Which of the following is true of a randomized AB design?
A) Carryover effects can be tested by factorial analysis of variance, which provides the interaction effects of a phase with its preceding phase.
B) The possibility of carryover effects undermines the validity of the findings obtained from this design.
C) A maximum of two phases can be accommodated in this type of experimental design.
D) Data are recorded on more than one variable simultaneously and changes are identified in some of them in order to determine causality.

Question

Quizplus · Accepted Answer

A randomized AB design involves randomly assigning participants to either an A (baseline) or B (intervention) phase. Carryover effects can occur when the effects of a previous phase carry over into the next phase, potentially affecting the results. Factorial analysis of variance can be used to test for interaction effects between phases and determine if carryover effects are present. Therefore, statement A is true. The other statements are false.

Which of the Following Is True of a Randomized AB