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The purpose of this study was to examine the dimensional structure of the Arabic version of the Positive Affect and Negative Affect Schedule using a sample of undergraduate students from a private university in the Sultanate of Oman. Confirmatory factor analysis was conducted to test four preconceptualized item-fit models: a one-factor structure model, a two-factor model using a factor structure of items converging on Positive Affect and Negative Affect, a correlated two-factor model, and finally the correlated three-factor model. Strongest support was found for the correlated two-factor model. A recent study provided further evidence of the robust structure of the Positive Affect and Negative Affect Schedule using the two-factor model. This study tested the model in a non-Western culture and a population that was very different from that in previous studies. The implications of these findings and recommendations are discussed herein. [ABSTRACT FROM AUTHOR]