Development and Psychometric Evaluation of a Malay Version of Body Dysmorphic Disorder Inventory (IKDT-8) among Malaysian Youth

Abstract

This study aims to develop, validate the content, and establish the reliability of the Body Dysmorphic Disorder Inventory (IKDT-8). This questionnaire is designed to measure the level of Body Dysmorphic Disorder (BDD) in individuals. The construction of IKDT-8 is based on the criteria from the Diagnostic and Statistical Manual of Mental Disorders (DSM), 5th Edition by the American Psychiatric Association (APA). IKDT-8 comprises 8 items divided into 4 subscales, with each subscale containing 2 items. The subscales include: 1) Obsessive thoughts about appearance, 2) Repetitive behaviors or mental actions due to concerns about appearance, 3) Impairment of social functioning and daily activities, and 4) This disorder is not better explained by other mental disorders such as eating disorders. To validate its content, IKDT-8 was reviewed by 7 experts consisting of 4 field specialists and 3 academic lecturers. Forty-five respondents aged 18 to 25 were selected to determine its reliability. The overall validity of IKDT-8 shows a high value of 0.946 (94.6%), and the reliability value was also high at 0.851. Thus, this study successfully developed a questionnaire with good validity and reliability for use in the counseling field in Malaysia.