In an experiment aimed at evaluating the effect of a memory-enhancing drug on the recall of a previously learned response. Either the drug or a placebo was administered to different groups of rats before the memory test. There were three trials of the memory test, and the dependent variable was the time it took the animal to make the correct response.
The proper analysis to evaluate the drug enhancement of memory is a(n)
A) t -test.
B) ANOVA with a within-subjects effect of trials.
C) one-way ANOVA.
D) factorial ANOVA.

Question

Quizplus · Accepted Answer

Since there are three trials, a within-subjects effect of trials in an ANOVA would be the best analysis to evaluate the effect of the memory-enhancing drug on recall. The dependent variable is measured repeatedly, and the analysis would assess whether there is a significant difference in performance across the three trials and between the drug and placebo groups.

In an Experiment Aimed at Evaluating the Effect of a Memory-Enhancing