Creationism and conspiracism share a common teleological bias.

Teleological thinking - the attribution of purpose and a final cause to natural events and entities - has long been identified as a cognitive hindrance to the acceptance of evolution, yet its association to beliefs other than creationism has not been investigated. Here, we show that conspiracism - the proneness to explain socio-historical events in terms of secret and malevolent conspiracies - is also associated to a teleological bias. Across three correlational studies (N > 2000), we found robust evidence of a teleological link between conspiracism and creationism, which was partly independent from religion, politics, age, education, agency detection, analytical thinking and perception of randomness. As a resilient 'default' component of early cognition, teleological thinking is thus associated with creationist as well as conspiracist beliefs, which both entail the distant and hidden involvement of a purposeful and final cause to explain complex worldly events.