The psychometric properties of The Religious Status Inventory—‘Being Ethical’ subscale among Northern Irish adolescents

Abstract

There are few self‐report measures of morality. The Religious Status Inventory—‘Being Ethical’ subscale represents one approach. However, at present there is limited information on the psychometric properties of either the original 20‐item version (RSInv‐20) or the shortened embedded 10‐item version (RSInv‐S10). The aim of the present study was to provide psychometric data on the internal reliability of these two versions of the ‘Being Ethical’ subscale. As part of a larger study, 595 Northern Irish adolescents, drawn from both Grammar and Secondary schools, completed the RSInv‐20. An unsatisfactory level of internal reliability was found for the RSInv‐20 (Cronbach’s alpha = 0.42), but a satisfactory level of internal reliability was found for the RSInv‐S10 (Cronbach’s alpha = 0.70). Subsequent item analysis produced an alternative 10‐item version (RSInv‐A10) that provided the optimum level of internal reliability for a 10‐item measure in the present sample (Cronbach’s alpha = 0.74). In addition, on all three versions of the measure (RSInv‐20, RSInv‐S10, and RSInv‐A10), differences were found in levels of internal reliability among Grammar and Secondary school respondents, with the former producing higher levels of internal reliability.