A researcher wants to know if exposure to classical music improves memory. She obtains a sample, of which, half are members of the Orlando Symphony and half self-reported that they rarely listen to classical music. She gives participants the Wechsler Memory Scale (WMS) and compares the test scores of the symphony to the test scores of the other group. She finds that those in the symphony did indeed perform better on the WMS than those who didn't listen to classical music. Which type of study does this describe?

Possible answers

Experimental

Quasi-experimental

Causal-comparative

Descriptive