A design that assigns different participants to each condition using random assignment is a(n) _____ design.
A)independent groups
B)repeated measures
C)Solomon four-group
D)pretest-posttest

Question

Quizplus · Accepted Answer

In an independent groups design, different participants are randomly assigned to each condition, which helps to eliminate potential confounding variables and increase the internal validity of the study. Choice B, repeated measures, involves each participant being tested in all conditions, which can be problematic if there is a carryover effect or if the testing itself influences subsequent performance. Choice C, Solomon four-group, involves combining elements of both independent groups and pretest-posttest designs, which may not always be necessary or practical. Choice D, pretest-posttest, involves testing participants before and after some intervention, but does not ensure equal allocation of participants to each condition. Therefore, an independent groups design is the best choice for assigning different participants to each condition using random assignment.

A Design That Assigns Different Participants to Each Condition Using