Mary Rothbart and colleagues proposed three different temperaments: approach, avoidance, and effortful control

One of the problems associated with the body of research on puberty today is that

a. food additives have drastically changed the rate of development in recent years. b. it is mainly focused on White adolescents in Western, industrialized countries. c. it has not been verified by research studies in North America. d. it is too detailed to understand in a general way.

Although sex-related differences in muscle mass can explain boys' skill advantages like __________, the primary differences in athletic performance in boys and girls is probably due to __________

A) throwing; social pressure B) kicking; boys' growth spurts C) balance; girls' body fat ratio D) catching; neurological differences