Researchers at a psychology clinic screen all new clients via phone interview, and over a few weeks have a list of 40 new clients who meet criteria for depression. Twenty receive cognitive-behavioral treatment, and the other twenty are told that they are on a waiting list. The independent variable in this study is __________, and the dependent variable is __________.
a. depression level; treatment
b. treatment; depression level
c. length of study; depression level
d. treatment; length of study
Question 2
__________ designs are those that evaluate or compare individuals at the same point in time, while __________ designs follow the same participants over time.
a. Cross-sectional; longitudinal
b. Longitudinal; cross-sectional
c. Quasi-experimental; experimental
d. Experimental; longitudinal