When we judge an action as morally right or wrong, we rely on our capacity to infer the actor's mental states. Here, we test the hypothesis that the right temporoparietal junction, an area involved in mental state reasoning, is necessary for making moral judgments. In two experiments, we used transcranial magnetic stimulation to disrupt neural activity in the RTPJ transiently before moral judgment and during moral judgment. In both experiments, TMS to the RTPJ led participants to rely less on the (...) actor's mental states. A particularly striking effect occurred for attempted harms : Relative to TMS to a control site, TMS to the RTPJ caused participants to judge attempted harms as less morally forbidden and more morally permissible. Thus, interfering with activity in the RTPJ disrupts the capacity to use mental states in moral judgment, especially in the case of attempted harms. (shrink)

This paper summarizes the results of 11 separate studies of deaf children’s performance on standard tests of false belief understanding, the results of which combine to show that deaf children from hearing families are likely to be delayed in acquiring a theory of mind. Indeed, these children generally perform no better than autistic individuals of similar mental age. Conversational and neurological explanations for deficits in mental state understanding are considered in relation to recent evidence from studies of deaf, autistic, and (...) normally developing children with varied levels of access to talk about mental states at home with family members during the preschool years. (shrink)

"Theory of mind" is the phrase researchers use to refer to children's understanding of people as mental beings, who have beliefs, desires, emotions, and intentions, and whose actions and interactions can be interpreted and explained by taking account of these mental states. The gradual development of children's theory of mind, particularly during the early years, is by now well described in the research literature. What is lacking, however, is a decisive explanation of how children acquire this understanding. Recent research has (...) shown strong relations between children's linguistic abilities and their theory of mind. Yet exactly what role these abilities play is controversial and uncertain. The purpose of this book is to provide a forum for the leading scholars in the field to explore thoroughly the role of language in the development of the theory of mind. This volume will appeal to students and researchers in developmental and cognitive psychology. (shrink)