Compulsive hair pulling is also referred to as __________.

Insecure-disoriented attachment is seen in nearly _____ percent of infants who have been tested

A) 5 B) 10 C) 15 D) 20

Boys and girls are physically very similar in early childhood EXCEPT

A) boys have slightly more muscle. B) girls have thicker bones. C) girls have more muscle mass. D) girls are taller.