This study investigated the ways in which 2 indicators of parental autonomy
granting, adolescents' decision-making input and parental knowledge of ado
lescents' daily experiences, differed as a function of contextual factors (
i.e., parents' gender role attitudes or sibling dyad sex composition) and b
oys' and girls' personal qualities (i.e., gender, pubertal status, developm
ental status, or birth order) in a sample of 194 families with firstborn (M
= 15.0 years) and second-born (M = 12.5 years) adolescents. Firstborns wer
e granted more autonomy than second borns, especially in families with firs
tborn girls and second-born boys. Girls in families marked by traditional m
aternal gender role attitudes were granted fewer autonomy opportunities. Po
stmenarcheal second-born girls were granted more opportunities for autonomy
than were premenarcheal second-born girls, but only in families with less
traditional maternal gender role attitudes.