A group of psychological researchers plan a study to test a new medication for depression. 100 patients

participate in the study. Half the patients are randomly assigned to receive the new medication. The other

half are randomly assigned to receive a pill with no active ingredients. The patients do not know which

group they are in. After two months, the patients fill out a questionnaire called the Depression Adjective

Checklist (DACL) which evaluates how depressed a person is. Answer TRUE or FALSE to the following

questions:

This is an observational study. TRUE FALSE

This study uses a placebo. TRUE FALSE

The psychologists who designed the study are the control group. TRUE FALSE

This is a blind study. TRUE FALSE