According to the U.S. Department of Labor (2012), the average American holds ___ different jobs between the ages of 18 and 30

In middle childhood, __________ contribute(s) to the development of trust and sensitivity

A) friendships B) informal peer groups C) peer conformity D) formal group membership

Wickens et al.'s "fruit, meat, and professions" experiment failed to show a release from proactive interference in the "fruit" group because

A. the stimulus category changed. B. the stimulus category remained the same. C. the response task changed. D. the response task remained the same.