If p(A or B) = p(A) + p(B) then A and B must be _________

In terms of gender development, during middle childhood __________.

a. children increasingly view occupations as being gender-neutral b. children increasingly view personality traits as associated with one gender or the other c. gender roles become less rigid than earlier in life d. play groups become less gender-segregated than they were in early childhood

Research into animal personalities suggests that:

a. unlike human personality traits, animal personality traits have no genetic basis. b. humans are the only animals who have true emotions. c. the Big Five personality traits can be observed only in primates. d. the Big Five personality traits occur in many different types of animals.