During the Strange Situation, 1-year-old Jack clings to his mother when they are alone in the playroom, and he hits and pushes her when she returns after separation. Jack's behavior is consistent with the __________ attachment pattern

A research study in which different groups of people of different ages are compared to assess a particular variable is a __________

a) cross-sectional study. b) longitudinal study. c) experimental study. d) survey.

Dr. Black is doing research in which she must diagnose clients at a mental health clinic. Because diagnostic reliability is of great concern in research, she will most likely establish diagnoses by using __________.

A. open-ended interviews B. structured assessment interviews C. the mental status exam D. time-limited interviews that last the same length of time for each client, although the questions may differ