Abstract:
The purposes of this research were; to investigate Thai children intellectual maturity at the kindergarten level, by separating in to age level and sex, by using the Goodenough-Harris Drawing Test; to determine the reliability and validity of the test; and to investigate the norms of these Thai children intellectual maturity. The subjects were 328 kindergarten children from 4 public kindergarten schools in Bangkok Metropolis area. The Goodenough-Harris Drawing Test and the Reading Readiness Test were administered to the subjects. The obtained data from the Drawing Test were computed and analyzed by two-way analysis of variance. The reliability of the test was computed by the Kuder-Richardson Formula 20. The validity of the test when using the reading readiness as a criterion was computed by the Pearson Product Moment Correlation and t-test was employed in testing the significant of the correlation. The norm tables were established in deviation IQs and percentile rank. The results of the study were: 1. Intellectual maturity were significantly different at the .01 level among three children's age level (4, 5 and 6 years) in Man scale, Woman scale and Self scale, and increased at the age level from 4 to 6 years. 2. Intellectual maturity of boys and girls were significantly different at the .01 level in the Women scale and Self scale. The interaction between the age level and sex was not significant at the .05 level. 3. Intellectual maturity showed positive correlation with the reading readiness. 4. The reliability coefficients of the Drawing Test ranged from .91 to .96 and the validity coefficient of the test was .40 when the reading readiness was used as a criterion. This validity coefficient was significant at the .01 level.