Reliability, Validity, and Factor Structure of Experiences in Close Relationships Scale –Revised for Using in Children and Adolescents (ECR-RC)

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 to investigate the psychometric properties of the experiences in close relationships scale- revised for using in children and adolescents (ecr-rc). this scale is a self-report questionnaire for measuring attachment anxiety and avoidance.method: the sample size of 430 students was selected by a stratified multistage cluster sampling in tehran. the attachment security scale (ass) was implemented to calculate the divergent validity of ecr-rc.results: the results of factor analsis 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 0.80 and the limit was satisfactory. furthermore, the test-retest reliability of ecr-rc over a four week period was more than .69. the 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 can be noted that ecr-rc is a useful and reliable tool for attachment researches in different domains of relationships.