Attachment in Adults with Intellectual Disabilities: Preliminary Investigation of the Psychometric Properties of the Manchester Attachment Scale–Third Party Observational Measure
In: Journal of applied research in intellectual disabilities: JARID, Band 27, Heft 5, S. 458-470
ISSN: 1468-3148
BackgroundThe Manchester Attachment Scale–Third party observational measure (MAST) was developed to assess secure attachment style for adults with intellectual disabilities. The psychometric properties of theMASTwere examined.Materials and MethodsProfessional carers (N = 40) completed theMASTand measures related to the construct of attachment theory [Edward Zigler‐Yale Personality Questionnaire (EZPQ), Emotional Rating Scale (ERS) and the Learning Disability Casemix Scale (LDCS)] regarding individuals with an intellectual disability (N = 57). Individuals with an intellectual disability (N = 14) completed the Self‐report Assessment of Attachment Security (SRAAS).ResultsTheMASTwas found to have good internal consistency, test–retest reliability and convergent validity.MASTscores were negatively correlated with level of intellectual disability and challenging behaviour (CB) as measured byLDCS.ConclusionsSupport was provided for the reliability and validity of theMASTand a relationship between attachment security, level of intellectual disability andCB. The results of the study and implications of attachment theory for service provision are discussed.