The existence of free will has been a subject of fierce academic debate for millennia, still the meaning of the term “free will” remains nebulous. In the past two decades, psychologists have made considerable progress in defining folk concepts of free will. However, this growing body of literature has yet to be reviewed systematically. This systematic review aimed to narratively synthesise primary psychological evidence on folk conceptions of free will, encompassing folk concepts, beliefs, intuitions, and attitudes about free will, to provide a definition grounded in laypeople’s perspective to guide future research. Database searches were conducted following a pre-registered search strategy. A total of 1,368 records were identified through database searching, and 16 additional records were identified through reference mining, author tracing, and contacting authors for unpublished manuscripts. After duplicate removal, ASReview, an open-source machine learning programme, was used to facilitate and optimise abstract screening. Finally, 57 full-text articles were assessed for eligibility, and 18 articles were eligible for inclusion, comprised of 36 studies and 10,176 participants from regions including the United States, Singapore, Hong Kong, India, Turkey, and Germany. The results showed that for ordinary folk, especially the more educated population from the United States, free will is a dynamic construct centred on the ability to choose following one’s goals and desires, whilst being uncoerced and reasonably free from constraints. Results suggesting metaphysical considerations regarding consciousness, dualism, and determinism were inconclusive. The findings provided preliminary support for a psychological model of folk conception of free will. All data and coding are openly shared.
Content analysis of psychological research with lesbian, gay, bisexual, and transgender people of color in the United States: 1969–2018.
