Symptoms of untreated diabetes mellitus include

a. unexpected weight gains and excess urination.
b. weight loss, thirst, and excess urination

Psychosocial theory is associated with

a. Arnold Gesell. c. Erik Erikson. b. Sigmund Freud. d. Albert Bandura.

Sol is investigating the effects of divorce on children's self-esteem. His initial sample consists of a group of 10 five-year-olds, which he plans to follow over a period of at least 15 years. When this group of children reaches age 15, Sol adds a second group of five-year-olds to his study, and plans to follow them for another 15 years. Sol's overall plan is best classified as a _____ research

design. a. correlational b. cross-sectional c. longitudinal d. sequential