Obsessional jealousy is a form of jealousy that occurs even though there is no threat to the

Which of the following is a disadvantage of the longitudinal design?

a) Individuals of different ages are being compared to one another. b) Longitudinal samples are rarely representative. c) Longitudinal studies fail to track changes over time. d) Participants may drop out due to moving, loss of interest, or changes in attitude.

Bill has been diagnosed as suffering from schizophrenia. Almost every day he stares blankly ahead at the TV. Bill is exhibiting

a) flat affect. b) hypoemotionality. c) hyperemotionality. d) inappropriate affect.