In our study, the test–retest reliability of the Persian version of IEPS
was obtained as r = 0.83. Besides, the Cronbach's alpha value for the
Persian version of IEPS, competence and autonomy, perceived need
for cooperation, perception of actual cooperation, and understanding
others' value was 0.86, 0.40, 0.60, 0.61, and 0.33, respectively