Philosophical behaviorism

Philosophical behaviorism is the view that mental states, like beliefs and desires, are best understood through observable behaviors rather than internal thoughts or feelings. In the context of physicalism, which holds that everything about the mind can be explained by physical processes in the brain, behaviorism focuses on how we can infer what's going on mentally by looking at what people do. Instead of speculating about internal experiences, behaviorists emphasize that understanding someone’s mental state involves examining their actions and reactions in response to different situations.