The authors defend the familiar developmental timeline that four-year-olds possess genuine mental-state concepts, while acknowledging that testing conditions can hide that competence. They argue that some experimental failures reflect momentary performance barriers rather than a late emergence of theory of mind. The paper’s careful parsing of evidence shows how subtle differences in tasks, instructions, and attention can shape outcomes in surprising ways.

If you care about how children learn to understand others, this discussion points to practical questions about assessment, inclusion, and nurturing social cognition. The debate also highlights new paths for research: better measures, more supportive testing contexts, and studies that connect early competence to later social and academic growth. Follow the full article to see how these findings might reshape what we expect from young learners and how we design environments that let their understanding show.

Abstract
Fabricius argues that the results of a recent study of ours speak for a deflationary competence limitation account of Theory of Mind development. According to this account, children do not operate with proper mental state concepts until age 6–7 or older. However, the original findings are, in fact, incompatible with such competence limitation accounts, but compatible with the standard picture of Theory of Mind development: According to this picture, children acquire proper mental state concepts by age 4, but this competence is sometimes masked by performance factors.

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