Background: This study investigates children's ability to generate inferences from narratives containing counterfactual information. Methods: 39 typically developing readers (mean age 10; 05) completed an on-line task in which they were asked to read short passages, followed by sentences which they had to judge as true or false. The sentences…

Although people with autism spectrum disorders (ASD) often have severe problems with pragmatic aspects of language, little is known about their pragmatic reasoning. We carried out a behavioral study on high-functioning adults with autistic disorder (n = 11) and Asperger syndrome (n = 17) and matched controls (n = 28) to investigate whether they…

Data are reviewed that suggest that there is no need to invoke a multiple-model theory of reasoning to explain the difficulty people encounter deriving valid conclusions to certain inference problems using doubly quantified sentences. Implications for theories of how people understand multiply quantified sentences are discussed. (SLD)