Experimental designs that expose subjects to more than one treatment condition each are referred to as
A) expectancy control designs.
B) repeated-measures designs.
C) nested designs.
D) between-subjects designs.

Question

Quizplus · Accepted Answer

Repeated-measures designs involve exposing the same subjects to multiple treatment conditions, allowing for within-subject comparisons. Expectancy control designs manipulate the expectations of subjects to eliminate or control for placebo effects, but do not necessarily involve multiple treatment conditions. Nested designs involve multiple levels or "nested" factors, and may or may not include multiple treatment conditions. Between-subjects designs involve exposing different subjects to different treatment conditions, and do not involve repeated measures within subjects.

Experimental Designs That Expose Subjects to More Than One Treatment