The Similarity of Siblings' Attachments to Their Mother.

Pooled sibling attachment data to compare attachment relationships to mothers for 138 sibling pairs. Found that sibling relationships were significantly concordant when classified as secure/nonsecure but not when further subcategorized. Maternal insensitivity to both siblings was associated with concordance of sibling nonsecurity. Same gender siblings were more likely to form concordant relationships with mothers than opposite gender siblings. (Author/KB)