After a large, natural disaster, researchers study the effect of the disaster on mental health functioning among people directly exposed to the disaster compared to those not directly exposed. This is an example of a(n)
a) ex post facto study
b) correlational study.
c) case study.
d) clinical observation.
Question 2
In a study investigating relaxation and anxiety among 20-year-old females, participants are randomized to receive a relaxation exercise or no treatment. Anxiety is measured on a five-point scale from no anxiety to extreme anxiety.
Which of the following is an extraneous variable that could contain two or more values?
a) Severity of anxiety prior to the treatmen
b) Age of the participants
c) Severity of anxiety after the treatment
d) The anxiety measure
Effect of predator on prey populations.
The health history can be gathered from many sources
Anatomy Of Large Intestine
Cross-sectional data showing that the amount of effort spent on personal health care increases with