The Fuzzy Delphi Method: Validation of the Personal Qualities and Abilities Elements in Career Readiness Instrument for Students with Disabilities

Abstract

This study seeks to achieve expert consensus on the items created for personal qualities and abilities elements in the career readiness assessment tool for students with disabilities. The study utilised the Fuzzy Delphi Method (FDM) using a seven-point Likert scale to collect reviews from 13 experts in diverse disciplines such as special education, batik making, textiles, food & beverage, laundry, and cleaning services. The research instrument comprises five items for personal qualities and abilities elements. The data was analysed utilising Triangular Fuzzy Numbers and the Defuzzification Process. The results suggest that expert comments and consensus on the instrument's constructions are satisfactory. The study found that the expert consensus was above 75%, with a Threshold (d) value below 0.2 and a–cut value above 0.5. All five items in the personal quality and ability elements for students with disabilities satisfied the Triangular Fuzzy Numbers criteria and were approved. Thus, this indicates that all items have obtained expert consensus and are essential for evaluating the professional preparation of students with exceptional needs. FDM can amalgamate expert perspectives to reach a consensus on item validation, ensuring the reliability and relevance of the built items.