he study of psychometric characteristics of Adolescent Time Inventory in Tehran

This research was performed with the aim of study of psychometric characteristics of Adolescent Time Inventory Tehran city.

Statistical samples of this study were 450 male and female adolescent of Tehran city that were selected through multiphase clustering method from statistical population. Research instrument was 30question form Adolescent Time Inventory.

The results showed that reliability factor by using Cronbach`s alpha and retest, represent favorite reliability for total inventory and each of components. Also the results exploratory factor analysis indicate existence of six factors of Past Negative, Past Positive, Present Negative, Present Positive, Future Negative and Future Positive that totally explain more than 37% of total variance. Confirmatory factor analysis showed that the results indicate acceptable fitness in determining factors.

Obtained results indicate that Adolescent Time inventory is a reliable and valid instrument for Iranian adolescent population