Beery vmi reliability and validity4/4/2023 External validity was assessed by correlating performance on CVIT 3–6 with L94, the Beery-Buktenica Developmental Test of Visuo-Motor Integration (Beery-VMI), the Freiburg Vision Test, the revised Snijders-Oomen Nonverbal Intelligence Test for children between 2 years 6 months and 7-years-old (SON-R 2.5–7), and the Social Responsiveness Scale (SRS) questionnaire and by comparing performance between validation groups. Internal validity was evaluated with a confirmatory factor analysis on the normative sample ( n=301, median age=4y 8mo, SD=9.7mo, 148 females, 153 males). Reliability was assessed via test–retest correlation and intraclass correlation coefficient (ICC) in typically developing children, children with cerebral visual impairment (CVI), intellectual impairment, and simulated impaired vision (validation groups n=59, mean developmental age=4y 10mo, 27 females, 32 males). To evaluate the reliability and validity of the Children's Visual Impairment Test for 3- to 6-year-olds (CVIT 3–6).
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