a1 Centre for Child and Family Studies, Leiden University, NL-2300 RB Leiden, The Netherlands. email@example.com firstname.lastname@example.org http://www.socialsciences.leidenuniv.nl/educationandchildstudies/childandfamilystudies/organisation/bakermans-kranenburg.jsp http://www.socialsciences.leidenuniv.nl/educationandchildstudies/childandfamilystudies/organisation/van-ijzendoorn.jsp
In middle childhood, boys show more avoidant attachments and girls more ambivalent attachments as a prelude to gender differentiation in reproductive strategies. However, we have failed to find systematic and method-independent gender differences in middle or late childhood attachments, nor in adult attachment representations. We conclude that Del Giudice's model rests on a brittle empirical basis.