Mental disorder (earlier entitled “illness” or “disease”) is ascribed to deviations from normal thoughts, reasoning, feelings, attitudes, and actions that are considered socially or personally dysfunctional and apt for treatment. Schizophrenia, depression, and bipolar disorder are core examples. The concept of mental disorder plays a role in many domains, including medicine, social sciences such as psychology and anthropology, and the humanities, including literature and philosophy. Philosophical discussions are the primary focus of the present entry, which differs from the entry on (...) Philosophy of Psychiatry in noting several different approaches—not only those of the philosophy of science and mind, but also those arising from phenomenology and social theory. -/- Mental disorder is a widely contested concept and there are longstanding debates on whether disorders are biological or social in nature. Even uncontroversial disorders, such as those listed above, were not always regarded as disorders in the past (Porter 2002). Moreover, the status of mental disorder has frequently indicated ethical, as much as other deficiency (Irwin 2013). Such reminders direct our attention to contemporary medical psychiatry’s sometimes uncompromisingly neurobiological, and avowedly value-free “medical model”, with its incumbent analogies and assumptions, and to the general question of how the taxa of psychiatric classifications are to be viewed as objects of natural science. This model has received intensive philosophical scrutiny, including arguments that deny these conditions are deficiencies at all. Along with issues arising from cognitive psychology and the neurosciences, such foundational matters make up much of the following entry. Because of their focus on issues central to the philosophy of mind and ethics (e.g., the mind-body problem, moral responsibility, agency and identity), analyses of mental disorder have extensive implications for those fields. As clinical phenomena, they also reflect an inescapable, everyday, social reality, giving theoretical inquiries additionally urgent practical, moral, and legal implications. (shrink)

The Theory Theory (TT) versus Simulation Theory (ST) debate is primarily concerned with how we understand others’ mental states. Theory theorists claim we do this using rules that are akin to theoretical laws, whereas simulation theorists claim we use our own minds to imagine ourselves in another’s position. Theorists from both camps suggest a consideration of individuals with autism spectrum disorders (ASD) can help resolve the TT/ST debate (e.g., Baron-Cohen 1995; Carruthers 1996a; Goldman 2006). We present a three-part argument that (...) such research has so far been inconclusive and that the prospects for studies of ASD to resolve the debate in the near future remain uncertain. First, we discuss evidence indicating that some individuals with ASD can perform effectively on tests of mental state understanding, which questions what ASD can tell us regarding theorising or simulation. Second, we claim that there is compelling evidence that domain-general mechanisms are implicated in mental state reasoning, which undermines how ASD might inform the TT/ST debate given that both theories appeal to domain-specific mindreading mechanisms. Third, we suggest that neuroscientific evidence for an assumed role of the mirror neuron system in autism also fails to arbitrate between TT and ST. We suggest that while the study of ASD may eventually provide a resolution to the TT/ST debate, it is also vital for researchers to examine the issues through other avenues, for example, by examining people’s everyday counterfactual reasoning with mental state scenarios. (shrink)