Young children tend to deny the possibility of events that violate their expectations, including events that are merely improbable, like making onion-flavored ice cream or owning a crocodile as a pet. Could this tendency be countered by teaching children more valid strategies for judging possibility? We explored this question by training children…

Children of 4 to 10 years of age were given 2 class inclusion tasks. Younger children's performance was inflated by guessing. Scores were higher in the marked task than in the unmarked task as a result of differing rates of inclusion logic. Children's verbal justifications closely approximated estimates of their true competence. (GLR)

Investigated 6-, 8-, and 10-year-olds' reasoning about laws and legal compliance. Found that children considered several factors in their judgments, including perceived justice of the law, its socially beneficial purpose, and potential for infringement on individual freedoms and rights. Found that children apply moral concepts of harm, rights, and…

The relationship between higher order reasoning and sex bias was investigated among children 7, 9 and 11 years old. Children read arguments enhancing their own or other gender, then rated argument intelligence, judged other children based on observations, and justified their arguments. Findings showed that own-gender reasoning biases declined with…

Failure to separate judicial reasoning (the application of rules) from legislative reasoning (the justification of rules) in earlier studies is claimed to invalidate most previous developmental research using moral dilemma interviews. Two studies used a novel method of scoring moral dilemma interviews that separates judicial from legislative…

This paper presents a reasoning taxonomy to explain reasoning objectives, strategies, and habits available to the advanced thinker. It begins by explaining the first part of the taxonomy, objectives of reasoning, including the need for skilled thinkers to reason with a purpose and to understand how the world works so that they can engage with it.…

Introduces the growing body of research on development of scientific reasoning skills, focusing on reasoning and problem-solving strategies used in experimentation and evidence evaluation. Maintains that current research examines strategy development and use in moderately complex domains to examine conditions under which subjects' theories…

A study investigated the relationship between formal and conversational logic. Thirty-two male and 32 female college students evaluated the conclusions of conditional syllogism and participated in an interview adapted from Deanna Kuhn's (1991) monograph, "The Skills of Argument." Students were asked to provide explanations for several…

Examined developmental differences in evidence evaluation skills among school children, non-college educated adults, and college students, utilizing plant growth variables. Found that children were more strongly influenced by prior beliefs and missing data than were the two adult groups. Age and educational differences were found in the…