Because participants are measured only once in the cross-sectional design, researchers
need not be concerned about such difficulties as __________ and __________.
A)cohort effects; practice effects
B)selective attrition; cohort effects
C)cohort effects; biased sampling
D)participant dropout; practice effects
Which of the following statements about sex differences is true?
A)Rates of miscarriage are higher for girls, whereas rates of birth defects are higher for
boys.
B)Rates of infant and childhood deaths, learning disabilities, and intellectual disabilities
are all higher for girls.
C)Worldwide, about 106 girls are born for every 100 boys.
D)Rates of miscarriage, birth defects, and behavior disorders are all higher for boys.
When gender intensification is evident, it seems to be
A)stronger for adolescent boys.
B)stronger for adolescent girls.
C)strongest for first-born sons.