Montel studies the effects of urban noise, crowding, and the human use of space. Montel is most likely a(n)

A range of cognitive tasks that a child cannot yet do but can learn to do through the guidance of an older child or adult defines _____

a) the zone of proximal development. b) the personal fable. c) symbolic function. d) private speech.

In the 1960s, approximately what percentage of prostitutes surveyed by Gebhard had contracted syphilis or gonorrhea?

A) 10% B) 35% C) 65% D) 90%