A researcher is interested in the relationship between brain damage and the ability of humans to plan their behavior. This research is an example of a(n) ________ design

Critics of Wallerstein and Blakeslee's study of divorce noted all of the following EXCEPT:

A) the sample was over represented by families that sought clinical help. B) the sample was not selected on a probability basis. C) there was no control group of non-divorced families. D) the statistical methods were inappropriate.

Moving from adolescence, most individuals experience a slight increase in self-esteem as they enter into emerging adulthood. Which of the following is a physiological factor that boosts self-esteem?

a. the ending of puberty b. developing career goals c. an established self-concept d. graduating from secondary school