Magnus and Mandy are sorting pencils for their teacher. Magnus can sort them into two piles, either separating the long and short pencils or separating the green and yellow pencils. Mandy has decided to put them into four piles: long green pencils, short green pencils, long yellow pencils, and short yellow pencils. Mandy has apparently mastered

The bell and pad device is used to treat

a. pica. b. enuresis. c. selective mutism. d. Tourette's disorder.

The epidemiological approach to the study of abnormal behavior is one that

A) grew out of a need to evaluate disorders within older cohorts. B) focuses on behavioral aberrations at the subgroup level. C) focuses on behavioral aberrations at the population level. D) primarily focuses on the causes of behavioral disorders.