Post-problem reflective tutorial dialogues between human tutors and students are examined to predict when the tutor changed the level of abstraction from the student's preceding turn (i.e., used more general terms or more specific terms); such changes correlate with learning. Prior work examined lexical changes in abstraction. In this work, we…

Ratings of concreteness and picturability and production data for meaningfulness of 310 words were gathered from sixth-grade children and college students. (JMB)

A previous study by Begg and Pavio found that subjects presented with concrete sentences were able to detect subsequent changes in meaning better than changes in wording. In contrast, with abstract sentences, wording changes were detected with greater facility than were changes in meaning. The present study assesses the effect of comprehension on…

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)

This study investigated developmental changes in semantic structure, focusing on whether changes could account for differences in the concepts acquired by children and those acquired by adults. Semantic structure was determined at each of four age levels (6, 9, 12 years and college students). Two indications of developmental change were observed…

This report describes a study instituted to determine whether attitude scales standardized on a white population falter when applied to black subjects. The subjects were 656 white and black college students, 457 of these being middle class white students, 29 middle class black students, and 70 lower class black students. Eight semantic…