Formal reasoning performance of higher secondary school students: Theoretical and educational implications

The study investigated the structure and development of formal thought among tenth-, eleventh-, and twelfth-grade students. The subjects of the study were the total numbers of students attending the science, the economic, and the other sections of two higher secondary schools. Students' performance on a standardized Test of Logical Thinking (TOLT) was used as a measure of their cognitive abilities related to control of variables, proportional,...