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Adult Attachment Lab Attachment Q & A.
Q: Do I need permission to use the ECR? How much does it cost?
A: The ECR can be used free of charge and does not require permission when used for research purposes. This is clearly stated in the 1998 chapter by Brennan, Clark, and Shaver that introduced the scale. (That chapter is available from Dr.Shaver’s website, under Publications.) Q: What is the test-retest reliability of adult attachment measures? A: Fraley and Brumbaugh (2004), found that most studies on the stability of adult attachment measures indicate moderate stability, with typical stability coefficients for continuous measures ranging from .50 to .60, over spans ranging from two weeks to over two decades (p. 117). [A Dynamical Systems
Security. In W. S. Rholes & J. A. Simpson (Eds.), Adult attachment: Theory, research,
and clinical implications (pp. 86-132). New York: Guilford Press.]
In our own studies, the coefficients are typically a little higher than this, often ranging into the .80s. There is also an interesting article on this subject by Scharfe and
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UC DAVIS Department of Psychology Contact
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