[Validity of mother and observer ratings on infant attachment behavior].

The observer version of the Attachment Q-Set (AQS) is considered to be a valid instrument for the assessment of infant attachment security while it is unclear which variables are measured by its mother version. Since there are only few studies so far who evaluate both versions concerning more than one aspect of validity, this was the aim of the present study. Furthermore it was searched for variables which moderate the correspondence of both versions.

Negative emotionality, attachment quality, and behavior problems in early childhood.

Negative emotionality, as well as attachment security and disorganization, are seen as major contributors to social adjustment and maladjustment in childhood. However, relatively little is known about whether infant negative emotionality and attachment quality operate together to affect developing behavior problems. The present study thus aims to contribute to this question.