Abstract
This research aims to develop an instrument for the evaluation of impulsivity traits in children and to examine the psychometric features of the developed scale. The process of developing the scale involved three main phases: namely, item generation, evaluation of content validity, and analysis of psychometric properties. The study sample comprised 319 children (68 females, 201 males) aged 5-18, all diagnosed with attention deficit hyperactivity disorder (ADHD), including 50 who underwent pilot testing. Both exploratory and confirmatory factor analyses were employed to assess the factor structure of the scale, resulting in an 18-item scale encompassing motor impulsivity, non-planning impulsivity, and attention-related impulsivity factors. The Confirmatory Factor Analysis (CFA) indicated a satisfactory model-data fit. The overall scale demonstrated high reliability, with Cronbach's Alpha coefficients reaching 0.863. The analyses indicated that the scale is both valid and reliable.
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