Evaluation of the Psychometric Properties of the Test of Gross Motor Development—Third Edition

With recent revisions, the evaluation of the reliability and validity of the Test of Gross Motor Development—3rd edition (TGMD-3) is necessary. The TGMD-3 was administered to 807 children ( M age = 6.33 ± 2.09 years; 52.5% male). Reliability assessments found that correlations with age were moderate to large; ball skills had a higher correlation ( r = .47) compared with locomotor skills ( r = .39). Internal consistency was very high in each age...