Purpose: To investigate the effect of gum chewing on the cognitive function of attention. Methods: Based on gum chewing habit, trait-anxiety variable, and different treatments(with or without gum chewing) during experiment,181 college students with good health were assigned to four groups GH (with chewing gum treatment and habit), GL (with chewing gum treatment, no habit), CH (no treatment,has habit) and CL (no treatment,no habit). Two attention tasks: Continuous Performance Test (CPT-AX) and Conjunctive Search Task (CST) were performed by all subjects in the laboratory.Results: Chewing gum during experiment had positive effect on attention performance, and the habit of gum chewing played an important role. Conclusion: Gum chewing had positive effect on attention performance, suggesting the effects mainly came from the familiarity of gum-chewing.

Objective To constitute the short form of Wechsler Intelligence Scale for Children (WISC). Methods After selecting 6 subtests by regression, this study was based on the development of the Chinese Version of the 6 Subtests Short Form of WISC-Ⅳ based on the　data derived from the norm sample via the norm method and equation procedure. Results and Conclusion The best structure of the 6 subtests short form of WISC-Ⅳ consists of 6 subtests: similarities, comprehension, block design, matrix reasoning, digit span and coding, in which the reliability and validity were excellent. The results of division for children of intellectual disabilities is close to that of the full Chinese Version of WISC-Ⅳ.