Abstract
Mood and its supposed relationship on job performance have been extensively researched. Literature highlights inconsistencies and uncertainty into whether experiencing a positive or negative mood can increase job performance. One reason behind these inconsistencies could be due to the way performance is measured. The current study addresses this notion, through conducting a mixed-method explanatory approach using a bespoke situational judgement test to measure performance. The study hypothesises that mood, personality and a combination of them both can predict job performance. The study examined two hundred employees who work or have experience working in customer focused occupations. In addition, eight people were interviewed to determine an explanation to the findings. A moderation analysis was conducted and the investigation found positive mood to predict job performance. However, no relationship was found between negative mood and job performance. As predicted, conscientiousness was found to predict job performance, as well as a combination of both positive mood and conscientiousness. The results of the study raise question to the importance the target audience has to research of this nature. Furthermore, the results have found the use of a bespoke situational judgement test to have potential in being a valid method for predicting job performance in future research.