Journal of Education and Psychology

The purpose of this study was to revise the "Watson-Glaser Critical Thinking Appraisal Form Zm" (WGCTA-Zm) for college students and adults in Taiwan. The revised WGCTA has two forms.Form A, which was revised based on traditional psychometric theory, contains 41 items; Form B, which was revised based on item response theory, contains 40 items. Either form can be completed by most college students and adults in 40 minutes.

Subject were 1210 college students and adults (840 college students, 276 prospective teachers, and 106 in-service primary school teachers) served Both forms have reasonably high internal consistency (Cronbach a=.73 for Form A and .68 for Form B) and stability (r=.65 for Form A and .60 for Form B).

The validity is guite satisfactory. Both Form A and Form B were significantly related to the Cornell Critical Thinking Test-level X (CCT-X n=119, r=.53 for both forms). Form A was also significantly correlated with the CCT-Z (n=378, r=.35)

Both forms were significantly and positively correlated with verbal reasoning, abstract reasoning, mathematical ability, IQ and field independence. These results provide support for the construct validity of the two revised forms.

On Form A there was no significant difference between male and female respondents while on Form B female Ss obtained significantly higher scores than male Ss. On both forms, college students performed significantly better than both prospective and in-service teachers while the latter two groups did not differ from each other.

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