The Construction of an Instrument for the Evaluation of Logical Thinking Author: Bao-tyan Hwang (Department of Chemistry, National Taiwan Normal University)

Abstract：

The purpose of this study was to develope an instrument of logical thinking, FORM B, as an alternative for of FORM a, which was used in the formal research project sponsored by National Science Council. The test consists ten items designed to measure five modes of formal reasoning: controlling variables, proportional reasoning, probabilistic reasoning, an correlational reasoning.
By item analusis, it indicated that the test consisted a reasonable difficulty and a discrimination poper. Analysis of data from 2195 students from grade 7 through college inicated high test realiability (p<.01). The split-haf realiability is 0.47=0.87; the Cronbach coeffocoemt os 0.47-0.86
Rvidemce of croterion-related alidity was obtained from a study with the chemistry achievement test, adn the correlation coefficient is between 0.20 to 0.55. The construct validiy is 0.31-0.82. The correlation coefficient is 0.26-0.47 with IQ test. All the above data provided the high test validity(p<0.1).

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