Author Question: Approximately what percent of adults suffer from an anxiety disorder at some time in their lives? ... (Read 28 times)

ssal · **on:** Jun 22, 2018

Approximately what percent of adults suffer from an anxiety disorder at some time in their lives?

A) 8.6
B) 15.7
C) 31
D) 57

Question 2

A researcher is interested in studying the effect of orange juice on test performance.

She will evaluate the test performance of students who drink the juice a half-hour before the test against the performance of students who receive nothing to drink before the test. The groups are equivalent in terms of demographics, intelligence, and prior college classes. In this example, the orange juice would be the
A) experimental control.
B) experimental variable.
C) control variable.
D) comparison control.