Nina obtains a sample of people who are classified as low, medium, and high in generalized anxiety. She then measures their persistence on a difficult laboratory task. Nina's research would best be classified as __________ research.
A) repeated measures
B) correlated groups
C) ex post facto
D) true experiment

Question

Quizplus · Accepted Answer

Nina's research is ex post facto because she is observing existing differences in anxiety levels without manipulating any variables.

Nina Obtains a Sample of People Who Are Classified as Low