The Psychometric Properties of the Visual Memory Scale

The current research aimed to verify the psychometric properties of the visual memory scale. The scale was applied to a sample of (30) children with autism spectrum disorder whose ages ranged between (3: 7) years, and the percentage of autism spectrum disorder ranged from mild to moderate. The research results showed that the percentage of agreement of the arbitrators on the arbitration elements of the scale ranged between (80-100%). The validity of the scale was calculated using a binomial test to detect significant differences in the responses of children with autism spectrum disorder on the visual memory scale. The test proved that there were statistically significant differences at a significance level of less than (0.05) between the responses of children with autism spectrum disorder on each axis and on the scale as a whole, in favor of children who could answer correctly, as shown by the high percentages and the significance level, which indicates the existence of an acceptable and reliable level of validity of the scale for application. There is also an internal consistency between each axis and the total score of the scale, as the values ranged between (0.655: 0.842), and all of these values are significant at a significance level of (0.01%), which confirms the existence of an internal consistency between each axis and the total score, which in turn confirms the validity of the scale for field application.

Keywords: Psychometric properties - Visual memory.