00369nam a2200109Ia 4500008004100000245012200041260004900163260000900212300001000221500001200231650001600243170224s9999    xx            000 0 und d 4aThe emergence of sex differences in personality traits in early adolescence: A cross-sectional, cross-cultural study.  bJournal of Personality and Social Psychology  c2015  a108:1  aJanuary  xPsychology.