Two experiments compared the cognitive maps (mental representations of the spatial environment) of first graders, fifth graders and college students, and investigated developmental changes in the ability to manipulate cognitive maps mentally. In the first experiment, subjects were asked to move from stationpoint to stationpoint and at each, to…

A theory of deductive reasoning is presented for inferences that depend on multiply quantified premises. It is argued that reasoners construct mental models based on their knowledge of the meaning of the quantifiers. Three experiments, with 54 university students and adults, corroborated the theory. (SLD)

Civil liberties are rights enjoyed by individuals guaranteeing them protection from the arbitrary or discriminatory acts of government. Kohlberg's cognitive-developmental theory of moral reasoning and studies of behavioral/abstract attitudinal measures provide a rationale for examining moral reasoning processes, intelligence, and selected…

Interactions between metaphor comprehension and level of operational thought were examined to determine what advantages individuals at the formal operational level had in natural language tasks such as the understanding of figurative language. After 30 undergraduate students were classified as either late concrete, early formal, or late formal…

Five studies examined the effect of dysphoric mood on perceivers' subjective unitization of an observed other's ongoing behavior into discrete meaningful actions. Dysphoria generally reduced unitization rate (i.e., number of actions discriminated). Additional evidence indicates this reduction results from failure to initiate a higher (more…