We are particularly adept at designing tasks that measure behavior in humans and other animals. We deploy those tasks in various settings – whilst gathering brain and clinical data, in the context of clinical treatment trials, and remotely in large general population samples. We look for patterns of behavior that replicate across samples and inter-relate between tasks, symptoms, brain signals, beliefs, and experiences. We are particularly interested in how beliefs form and are updated in light of new information. These may include perceptual beliefs, beliefs about rewards, and beliefs about other people and their intentions. We have a particular focus on how simple domain-general mechanisms contribute to complex processes like trust, morality, coalitional cognition, and deception - we examine whether and how individual differences in these higher-level behaviors relate to participants’ performance on our tasks.