What can occur when a measure is too easy or obvious, leading to scores all being at the maximum level for that variable?

Which of the following is the BEST example of retrospective analysis?

A) Researchers ask college students to write suicide notes in order to study what they think is the motivation for suicide. B) Therapists who had patients who committed suicide are interviewed to gain information on suicide. C) Adolescents at high risk for suicide are treated through a suicide prevention center. D) Those who have made suicide attempts are part of a suicide education program.

Physicians who are trained to treat psychological disorders are called:

a. clinicians. b. counselors. c. psychiatrists. d. psychiatric psychologists.