I consider how complex logical operations might self-assemble in a signalling-game context via composition of simpler underlying dispositions. On the one hand, agents may take advantage pre-evolved dispositions; on other they co-evolve dispositions as simultaneously learn to combine them display more behaviour. In either case, evolution can be efficient than evolving such capacities from scratc...

CONTEXT Previous work has demonstrated marked changes in inpatient mental health service use by children and adolescents in the 1980s and early 1990s, but more recent, comprehensive, nationally representative data have not been reported. OBJECTIVE To describe trends in inpatient treatment of children and adolescents with mental disorders between 1990 and 2000. DESIGN AND SETTING Analysis of...

The theory of structural dissociation of the personality proposes that patients with complex trauma-related disorders are characterized by a division of their personality into different prototypical parts, each with its own psychobiological underpinnings. As one or more apparently normal parts (ANPs), patients have a propensity toward engaging in evolutionary prepared action systems for adaptat...