Psychometric Properties of Basic Needs Scale Based on Choice Theory (BNSBCT)

Choice Theory, which is a well-established psychological framework that emphasizes the importance of meeting basic needs for human well-being and optimal functioning. The use reliable valid measure like BNSBCT can lead to more accurate meaningful research findings, inform development interventions or policies aimed at improving individuals' fulfillment in various contexts especially education. aim this study was develop measurement instrument find out satisfaction levels adult population test psychometric properties scale. Individuals aged 18 older, who were reached with convenience sampling method, participated study. Exploratory Factor Analysis conducted data obtained from 381 participants, while Confirmatory 194 participants goodness fit indices found be χ²/df= 1.64; GFI=.85; IFI=.91; TLI=.90; CFI=.91; PNFI=.71; PGFI=.69; SRMR=.64 RMSEA=.06. 25-item scale includes five factors. Face validity .91, convergent value .70. In terms reliability, McDonald's Omega coefficient .92, test-retest correlation .83. results show Basic Needs Scale based on Theory instrument. As result, it stated used determine level adults.