Assessing attachment security with the Attachment Q Sort: meta-analytic evidence for the validity of the observer AQS |
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| Authors: | van IJzendoorn Marinus H Vereijken Carolus M J L Bakermans-Kranenburg Marian J Riksen-Walraven J Marianne |
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| Institution: | Center for Child and Family Studies, Leiden University, The Netherlands. vanijzen@fsw.leidenuniv.nl |
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| Abstract: | The reliability and validity of the Attachment Q Sort (AQS; Waters & Deane, 1985) was tested in a series of meta-analyses on 139 studies with 13,835 children. The observer AQS security score showed convergent validity with Strange Situation procedure (SSP) security (r = .31) and excellent predictive validity with sensitivity measures (r = .39). Its association with temperament was weaker (r = .16), which supports the discriminant validity of the observer AQS. Studies on the stability of the observer AQS are still relatively scarce but they have yielded promising results (mean r = .28; k = 4, n = 162). It is concluded that the observer AQS, but not the self-reported AQS, is a valid measure of attachment. |
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