Department of Psychology Bu-Ali Sina University
Department of Psychometrics Allameh Tabatabaie University
Department of Educational Psychology Allameh Tabatabaie University
Department of Psychometrics Allame Tabatabaie University
This research is executed to find a valid instrument for diagnosis of visual
perception deficiencies. Test of visual perception is composed of 7 subskills as
follows: visual-motor integration, figure ground, visual discrimination, form
constancy, visualization, spatial relations, and visual sequential memory. The
research covered 1600 elementary school and pre school students: 800 boys:
400 preschool students and 400 first grade elementary school students. 800
girls: 400 preschool students and 400 first grade elementary school students.
The selection of the sample followed a multistage sampling method. A
developmental test of visual perception and the Goodenough test were
administered individually. Goodenough test was used to determine the value of
criterion validity. Descriptive statistics, Cronbach's alpha, Pearson correlation
coefficient, and t–test were used to analyze the data. The results showed: 1-
Norm Tables for the total scores were demonstrated and listed for gender and
academic grade, separately. 2-The reliability coefficients of test were found to
be .74. 3-The correlation coefficient between the created test and the criterion
test for the total score and all subtests were significant. 4- The difference
between the developmental visual perception in boys and girls was significant.
5- The difference between developmental visual perception in preschool and
first grade elementary school students was significant.