Psychometric Properties of the Test of Gross Motor Development-3 for Children With Visual Impairments

Results of the Test of Gross Motor Development-2 (TGMD-2) consistently show acceptable validity and reliability for children/adolescents who are sighted and those who have visual impairments. Results of the Test of Gross Motor Development-3 (TGMD-3) are often valid and reliable for children who are sighted, but its psychometric properties are unknown for children with visual impairments. Participants (N = 66; M-age = 12.93, SD = 2.40) with visual impairments completed the TGMD-2 and TGMD-3. The TGMD-3 results from this sample revealed high internal consistency (omega =.89-.5), strong interrater reliability (ICC =.91-.92), convergence with the TGMD-2 (r =.96), and good model fit, chi(2)(63) = 80.10, p =.072, chi(2)/df ratio = 1.27, RMSEA = .06, CFI =.97. Researchers and practitioners can use the TGMD-3 to assess the motor skill performance for children/adolescents with visual impairments and most likely produce results that are valid and reliable.