Theory of mind

Imagine a child watching one person tell another where a misplaced toy is. The speaker knows where it moved; the listener still thinks it is in the old place. The child must understand how the message can change what the listener believes and does. How do children learn to follow these interacting minds, and use that understanding in unfamiliar situations?[1]

Understanding a conversation requires tracking what each person knows and how a message can change another person’s thinking or actions. How do children acquire and flexibly use this understanding across social contexts? In Bass and colleagues’ matching-game study, adults and six- to eight-year-olds were tested in separate experiments with a teacher who overestimated, underestimated or accurately represented their ability. The teacher then described new games as too easy, too hard or about right. The children’s ranked choices shifted toward games she judged easier when she overestimated them, and toward games she judged harder when she underestimated them. This was a difference in group preferences, not a rule every child followed. Interpreting her recommendation therefore involved her belief about the learner, not only the game description. This is evidence from a structured task, not a complete developmental history of how children learn to understand interacting minds.[1] [3]

Many abilities develop early. How experience builds flexible understanding of interacting minds remains incomplete.[1]

Success depends on the scenario as well as the ability being tested: language, memory and managing several viewpoints can affect performance. The 2025 review leaves open how understanding extends beyond brief interactions. The 2026 MAC account proposes that social experience helps people generate and select interpretations that others regard as plausible. This account of learned coordination remains a framework to test, not an established universal developmental sequence.[1] [2]

Watching a conversation can teach us something even when nobody is speaking directly to us. Understanding who knew what, and what a message changed, helps explain how children learn from others’ interactions and interpret whether information was helpful or misleading.[1]

Knowing that someone can be mistaken is different from using that knowledge to interpret their advice. The matching-game example links that distinction to what a child chooses to learn next. Explaining how experience shapes this use would connect laboratory belief tasks with everyday cooperation and learning from others, rather than treating a single correct response as the whole ability.[1] [3]