reliability, validity, and factor structure of experiences in close relationships –revised-scale for use with children and adolescents (ecr-rs)

introduction: the investigation of attachment processes during middle childhood and early adolescence has been hampered by a relative lack of measures for this age group. the aim of this study was investigating the psychometric properties of experiences in close relationships revise-scale for use with children and adolescents (ecr-rc). it is a self-report questionnaire for measuring attachment anxiety and avoidance. method: sample size of 434 students was selected by stratified multistage cluster sampling in tehran. attachment security scale (ass) was implemented to calculate the divergent validity of ecr-rc. results: results of factor analyze indicated that two factor model of ecr-rc fit in iranian sample in each relational domain (mother-father). cronbach's alpha coefficient of ecr-rc was above 4.04 and the limit was satisfactory. furthermore the test-retest reliability of ecr-rc over a four week period was more than 46.0. correlation coefficient analysis showed that ecr-rc has a significant negative relationship with ass which shows the divergent validity. conclusion: factor structure, reliability and validity of the ecr-rc for research applications and clinical diagnostics were within acceptable limits. it’s can be said that ecr-rc is useful and reliable tool for attachment researches in different domain of relationship.