Background: The concept of couples' satisfaction is one's subjective evaluation of marital relationship and the level of perceived happiness from this relationship. Couples Satisfaction Index (CSI) is a self-report measure to assess marital satisfaction. This study aims to evaluate the psychometric characteristics of the Persian version of CSI in a non-clinical sample. Materials and Methods: Factor analysis, translation, structural, convergent validity, and reliability of this index were investigated in 150 married students of Tehran and Shahed Universities recruited by convenience sample method. Results: According to the results of the exploratory factor analysis, four factors of "marital happiness", "warmth of the relationship", "being together", and "right choice" were identified in the Persian version of CSI. The specifications of exploratory factor analysis were good. The results of the confirmatory factor analysis showed that four factors of the CSI are more valid and reliable. The reliability of the index was 0.96 determined by Cronbach α. The convergence between this index and Locke-Wallace Marital Adjustment Test (MAT) was calculated to be 0.9. Conclusion: Results indicate that Persian version of CSI has appropriate psychometric characteristics. Therefore, this measure can be confidently used in this field of research.

Objective: The growing popularity of computer games has attracted the attention of researchers in this field. The underlying psychological motives of gamers are important to prevention of disorders related to online gaming. This study was aimed at evaluating the psychometric characteristics of the Iranian version of the Motives for Online Gaming Questionnaire (I-MOGQ) and its association with Internet Gaming Disorders (IGD). Method: Four hundred and fifty-two Iranian adult gamers (mean age = 21.5 years, SD = 4.14) voluntarily responded to the anonymous survey online. All participants in this study were males. The questionnaires used in this study were MOGQ and IGD Scale. We performed confirmatory factor analysis (CFA) for MOGQ. Also, the correlation between MOGQ and IGD was evaluated. Results: CFA supports the construct validity of the questionnaire (RMSEA < 0.08). Cronbach's alpha, as an indicator of internal consistency of the questionnaire, was 0.91 (Social = 0.85, Escape = 0.84, Competition = 0.83, Coping = 0.79, Skill Development = 0.89, Fantasy = 0.85 and Recreation = 0.83). Also, the scale displayed adequate convergent validity, as shown by significant positive correlations with IGD scores. The highest correlation was found with the Escape motive (0.57) and the lowest was found with Recreation (0.15). Conclusion: This study showed that the Iranian version of the MOGQ is a valid and reliable scale for identifying the motives for online gaming among young adults.