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Subjective well-being (SWB) comprises people's longer-term levels of pleasant affect, lack of unpleasant affect, and life satisfaction. It displays moderately high levels of cross-situational consistency and temporal stability. Self-report measures of SWB show adequate validity, reliability, factor invariance, and sensitivity to change. Despite the success of the measures to date, more sophisticated approaches to defining and measuring SWB are now possible. Affect includes facial, physiological, motivational, behavioral, and cognitive components. Self-reports assess primarily the cognitive component of affect, and thus are unlikely to yield a complete picture of respondents' emotional lives. For example, denial may influence self-reports of SWB more than other components. Additionally, emotions are responses which vary on a number of dimensions such as intensity, suggesting that mean levels of affect as …