Logic process in which the mind of a proposition or judgment, careful and regular communication establishes a link between them, the result is achieved. The aim of this study was to examine the factor structure of the scale logic for Students Proportional to the logic of Iran culture. The test in 2005 by Anna Thomson To determine the size and amount of logical argument is made. Content validity by professors of psychology and Consultation approval. Then, by using sampling Available, A sample of 200 students who received PNU Bukan Center. After collection, the question of appropriate statistical methods to analyze and rate the content validity and construct validity, factor analysis and Cronbach's alpha coefficients of internal consistency and reliability of the method used. Based on the results of exploratory factor analysis, two factors were extracted logic, numbers and logic judgment. Cronbach's alpha coefficients for the components of the test in order for logical reasoning, judgment 0/83 and argue the numbers 0/87 is. The results indicate that the test has high reliability and validity.
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