AU - Abu-Hilal, Maher Mohamed AU - Zayed, Kashef AB - Introduction: Optimism and pessimism are two psychological constructs that play a significant role in human mental and psychological hygiene. The two construct are strongly but negatively correlated. Optimism and pessimism can be influenced by culture and the environment. The present study attempts to test the structure of optimism and pessimism across two countries: United Arab Emirates and Oman. Also, physical education students were compared to non-physical education students. Method: College students from SQU in Oman (n = 103) and the UAEU (n = 200) participated in the study. The sample was a convenient one. The SQU sample was primarily physical education students (males = 60, females = 43). The instrument consisted of thirty Likert-type items. Optimism was measured by 15 items and so as pessimism. Results: Exploratory factor analysis clearly identified two factors rather than one bipolar factor. The number of factors (2), the pattern of factor loadings, the factor correlations and uniqueness were invariant across P.E. and non P.E samples. MANOVA revealed that P.E. subjects were more optimistic than non P.E. subjects. However, no significant difference was found in pessimism between P.E. and non P.E. subjects. Discussion and Conclusion: The results revealed that optimism and pessimism can influenced by the immediate environment as well as the type of study. It terms of structure, the instrument was as valid and reliable in Oman and UAE as it was valid and reliable in Kuwait where the instrument was originally developed and standardized. (ERIC: As Provided) http://search.shamaa.org/abstract_en.gif ID - 23036 OP - pp. 1267-1284 PB - Almeria University of Almeria, Education & Psychology I+D+i 2011 PP - Almeria University of Almeria, Education & Psychology I+D+i 2011 SN - 16962095 T1 - Optimism and pessimism of physical education and non-physical education students: invariance of structure [Article] YR - Almeria University of Almeria, Education & Psychology I+D+i 2011