Research on optimism has increased in the past years. Optimism is known to have a positive relationship with several health outcomes. Additionally, optimism has also been established as a predictor...Show moreResearch on optimism has increased in the past years. Optimism is known to have a positive relationship with several health outcomes. Additionally, optimism has also been established as a predictor of various mental and physical health outcomes. Whilst the relationship between optimism and executive functioning has been discussed, little is known about optimism as a predictor of success in executive functioning. In this study, data from 250 respondents was collected through online questionnaires to study whether optimism is a significant predictor of success in executive functioning in general, as well as in separate aspects of attention, self-control and self-monitoring, and planning. The measuring instruments that were used were the Life-Orientation Test-Revised for optimism and the Amsterdam Executive Function Inventory for executive functioning and its aspects. Four simple linear regression analyses were conducted to analyze the data. The results showed that optimism is a significant predictor of executive functioning in general (b = .22, p < .001), as well as of attention (b = .13, p < .001) and planning (b = .06, p < .05), but not of self-control and self-monitoring (p > .05). The main limitation in this study was that data were collected cross-sectionally instead of longitudinal. For self-control and self-monitoring, further research could be beneficial to understand what made this outcome differ from the others. These outcomes could be helpful to further investigate possible implications for the treatment of neuropsychological problems.Show less