What is the primary assumption of mentalism in explaining behavior?

The primary assumption of mentalism in explaining behavior is centered around the idea of an "inner" dimension that accounts for an individual's thoughts, feelings, and other mental states as explanations for their behavior. This perspective posits that internal processes play a significant role in shaping how people act, suggesting that behaviors are often a manifestation of these internal states rather than solely the result of observable actions or external stimuli.

Mentalism differs from behaviorism, which focuses exclusively on observable behaviors and external factors, arguing that those are the only valid subjects of study. In contrast, mentalism allows for the exploration of subjective experiences and inner cognitive processes, asserting that these aspects are crucial for understanding behavior comprehensively. Thus, the emphasis on an "inner" dimension aligns with the mentalistic view that mental states and intentions guide actions.