Convergent validity of a newly developed occupational performance assessment: A pilot study

Abstract

Aim: This pilot study aimed to investigate the validity of an assessment for instrumental use of the mind: the Assessment and Intervention Instrument for Instrumentalism in Occupational Therapy (AIIIOT). The AIIIOT is used to guide individuals being assessed in developing personal mission statements to guide their lives. The individuals then assess themselves on perceived frequency, adequacy, satisfaction, and belief in ability to perform occupations that would help them achieve the stated missions. Method: The validity of the AIIIOT in evaluating occupational performance was investigated by comparing it with the Canadian Occupational Performance Measure (COPM). Eleven people, aged 19–58 years, comprising of nine women and two men, participated in this convergent validity study. Data were gathered using the AIIIOT and the COPM. Pearson moment correlation and linear regression analyses were conducted to determine the convergent and predictive validities. Results: The participants' AIIIOT belief scores were correlated with the COPM performance and satisfaction scores, indicating that the AIIIOT belief scale had convergent validity. The AIIIOT belief scores were good predictors for the performance and satisfaction with performance of prioritised occupations as measured on the COPM. The AIIIOT adequacy scores were good predictors for the AIIIOT Frequency scores. Adequacy scores were also good predictors of the AIIIOT satisfaction scores. Conclusion: The above findings suggested that the AIIIOT had reasonable convergent and predictive validities. Further research with larger, more representative samples is indicated to confirm these findings.