Proceedings of the Annual Meeting of the Cognitive Science Society

The literature on first-order false-belief is extensive, but less isknown about the second-order case. The attainment of second-order false-belief mastery seems to mark a cognitively signifi-cant stage, but what is its status? Is it an example of complex-ity only development, or does it indicate that a more funda-mental conceptual change has taken place? In this paper weextend Bra ̈uner’s hybrid-logical analysis of first-order false-belief tasks (Bra ̈uner, 2014, 2015) to the second-order case,and argue that our analysis supports a version of the concep-tual change position.