Four-hundred and nine students (grades 8, 10, 12 and 14) were given logical syllogism problems of the form "If p...then q" along with tests of dogmatism and intolerance of ambiguity. Aptitude scores were also obtained. Major results indicated that expressed dogmatism and intolerance of ambiguity were negatively correlated with syllogistic…

Reported are results of a study that examined the relationships between university students' entry characteristics and achievement in biology. Variables judged most likely to be predictors of achievement were: (1) scholastic aptitude (quantitative and verbal); (2) level of cognitive development; (3) locus of control; (4) grade point average; (5)…

A model for the development of scientific reasoning in adolescents was formulated largely upon the basis of Piagetian theory. Included as potential determinants of scientific reasoning were: experience; age; locus of control; field dependence-independence (FID); rigidity/flexibility; intelligence quotient (IQ); and sex. Causal relationships…

Assesses 180 college students at three ages (17-23, 37-43, and 61-80) to examine the relative availability of Piagetian formal reasoning concepts; the relationship of these formal reasoning performances to Horn and Cattell's psychometric theory of general fluid and crystallized intelligence; and developmental patterns among standardized…

A model for the development of scientific reasoning in adolescents was formulated largely upon the basis of Piagetian theory. Included as potential determinants of scientific reasoning were experience, age, locus of control, field independence-dependence (FID), rigidity/flexibility, intelligence quotient (IQ), and sex. Causal relationships between…