The value of believing in free will: A prediction on seeking and experiencing meaning in life

Despite abundant philosophical pondering and experiential evidence demonstrating the need for freedom in leading a meaningful life, the literature lacks an investigation of whether and how free will beliefs contribute to one's meaningful life as an antecedent variable. Based on the coupling of the life-affirming hypothesis and Chinese culture, we used a manipulation experiment (Study 1, n = 242) and a two-wave longitudinal study (Study 2, n = 378) to test the potential causality between laypeople's daily beliefs in free will and meaning in life (presence of and search for meaning) with two samples of Chinese undergraduates. The results show that belief in free will positively predicts the presence of meaning and search for meaning, immediately (Study 1) and 2 months later (Study 2). The present work corroborated that the belief in free will is an antecedent variable that imbues life with meaning and sparks actions seeking meaning, supporting the life-affirming hypothesis instead of the deficit-correcting hypothesis.

Does belief in free will influence biological motion perception?

Previous research suggests that belief in free will correlates with intentionality attribution. However, whether belief in free will is also related to more basic social processes is unknown. Based on evidence that biological motion contains intentionality cues that observers spontaneously extract, we investigate whether people who believe more in free will, or in related constructs, such as dualism and determinism, would be better at picking up such cues and therefore at detecting biological agents hidden in noise, or would be more inclined to detect intentionality cues and therefore to detect biological agents even when there are none. Signal detection theory was used to measure participants' ability to detect biological motion from scrambled background noise (d') and their response bias (c) in doing so. In two experiments, we found that belief in determinism and belief in dualism, but not belief in free will, were associated with biological motion perception. However, no causal effect was found when experimentally manipulating free will-related beliefs. In sum, our results show that biological motion perception, a low-level social process, is related to high-level beliefs about dualism and determinism.