If the participants in one treatment condition are noticeably older than the participants in another treatment condition, then participant age is a confounding variable

Psychologists would best be described as

a. scientists who conduct research. b. practitioners who apply psychology to solve problems in fields like education and medicine. c. teachers. d. scientists, practitioners, and/or teachers.

Following a disaster, debriefing sessions

a. provide those involved with a chance to share their feelings and concerns. b. are not necessary for experienced disaster workers. c. tend to increase the anxiety felt by many victims. d. should be conducted by professionals.