Background:
Texas Cristian University (TCU) psychosocial functioning and motivation scales were translated
and validated for the persons who use drugs (PWUDs).
Methods:
This study was carried out as a methodological research. The scales were translated forward and backward and
then, the PWUDs in Kermanshah-based (west of Iran) substance abuse treatment centers in 2019 filled out the scales.
Participants included 250 individuals who were selected by convenience sampling method. A demographics form and
psychosocial functioning and motivation scales were used to collect data. For data analysis, content validity, face validity,
test-retest, internal consistency, and construct validity were applied by using exploratory analysis methods in SPSS (v.20)
and confirmatory factor analysis in LISREL software.
Results:
Exploratory Factor analysis (EFA) results were obtained by using main component analysis and Varimax rotation
of three factors (psychological function, social function, treatment motivation). Extracted factors along with the
eigenvalues, attributed variance percentage, and cumulative attributed variances by each factor, by 68.56%, showed a total
variance of the questionnaire. Moreover, the fitness indexes of the confirmatory factor analysis (CFA) of psychological
function, social function, and treatment motivation were 0.059, 0.075 and 0.072, respectively. Therefore, the questionnaire
fitness was at the acceptable level. The test-retest reliability coefficient was 0.875, and the Cronbach's alpha coefficient
for all the components was higher than 0.71.
+ The results showed that psychosocial functioning, motivation scales have good psychometric properties, and they can be
used in research and treatment fields.