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    Developing a Visual Perception Scale (VPS) for preschool children: validity and reliability study
    (Çanakkale Onsekiz Mart Üniversitesi, 2015) Kalkan, Abdullah; Arslan, Mehmet
    The purpose of this study is to develop a valid and reliable assessment tool designed to determine visual perception levels of preschool children (age 4-5-6). Construct validity of the scale has been identified through explanatory factor analysis (EFA) while expert opinion has been employed for the content and face validity of the scale. The reliability of the scale has been calculated through checking the significance of Cronbach alpha internal consistency coefficient, corrected item-total correlation, and group item means of the top and bottom 27% in the t-test. Cronbach alpha reliability coefficient of VPS is .84. The results of EFA have revealed that the scale has three factors and that these factors can explain 46.73% of the total variance. Based on the contents of the items, these factors have been given the names of differentiation, figure-ground perception, and matching. Cronbach alpha coefficients of differentiation, figure-ground perception, and matching are .84, .84, and.75 respectively. According to corrected item-total correlation in t-test, all items have been noted to significantly vary between the top and bottom 27% (p<.001). Following the test/re-test reliability study, pretest/posttest Pearson Moments Correlation coefficient has been identified to be .74 (r>.70), and the significance between the two assessments has been noted to be p=.00 (p< .01).