Moreover, social influence has a significant direct relationship with secure attachment style and a significant inverse relationship with avoidant attachment style, but this index has no significant relationship with ambivalent attachment style. (scirp.org)
This scale, which has been made using the materials of Hazan and Shaver attachment test and has been standardized for the students of Tehran University, is a 15 - item test and measures three secure, avoidant and ambivalent attachment styles on a 5 - point Likert scale (1 - very low, 2 - low, 3 - medium, 4 - high and 5 - very high). (scirp.org)
Alpha coefficients of (reliability) questions about the subscales of secure, avoidant and ambivalent attachment styles regarding a student sample (1480 people) were calculated to be respectively 0.86, 0.84 and 0.85 for all the subjects, which indicate good internal consistency of Adult Attachment Scale. (scirp.org)