A standard mood-induction procedure using film clips was used to induce happy, sad and neutral states. Positive affect (PA) and negative affect (NA) were used as indicators of mood to assess subsequent levels of authenticity, self-consciousness and life satisfaction. No significant differences were found between happy and neutral conditions relative to positive and negative affect and thus the mood manipulation failed to distinguish between happy and neutral states. PA was not significantly correlated with any of the measures. Possible explanations for the failure of PA are discussed. Two new scales to measure authenticity as a state were constructed, The State-Authenticity Questionnaire and the Visual State-Authenticity Scale, (VSAS) which were inspired from scales previously used in the research area (State-Authenticity Questionnaire and Inclusion of Other in the Self Scale). Mood was shown to predict authenticity over and above the effects of trait happiness for the VSAS scale but not the state-authenticity questionnaire. Authenticity was also found to mediate the relationship between mood and life-satisfaction, thus lower NA leads to higher authenticity which leads to higher life satisfaction. This was found for the two authenticity scales. The mediating relationship of private self-consciousness between mood and authenticity was also explored but because of an insignificant correlation between private self-consciousness and authenticity the mediation could not proceed. The results provide the foundations for future research as it is the first study to report authenticity as a mediator in the relationship between mood and life-satisfaction and the first study to induce authenticity as a state.