Test of Gross Motor Development: expert validity, confirmatory validity and internal consistence

Nadia Cristina Valentini, Marcus Levi Lopes Barbosa, Gabriela Villwock Cini, Rosiane Karine Pick, Barbara Coiro Spessato, Marcos Alencar Abaide Balbinotti


 The Test of Gross Motor Development (TGMD-2) is an instrument used to evaluate children’s level of motor development. The objective of this study was to translate and verify the clarity and pertinence of the TGMD-2 items by experts and the confirmatory factorial validity and the internal consistence by means of test-retest of the Portuguese TGMD-2. A cross-cultural translation was used to construct the Portuguese version. The participants of this study were 7 professionals and 587 children, from 27 schools (kindergarten and elementary) from 3 to 10 years old (51.1% boys and 48.9% girls). Each child was videotaped performing the test twice. The videotaped tests were then scored. The results indicated that the Portuguese version of the TGMD-2 contains clear and pertinent motor items; demonstrated satisfactory indices of confirmatory factorial validity (÷2/gl = 3.38; Goodness-of-fit Index = 0.95; Adjusted Goodness-of-fit index = 0.92 and Tucker and Lewis’s Index of Fit = 0.83) and test-retest internal consistency (locomotion r = 0.82; control of object: r = 0.88). The Portuguese TGMD-2 demonstrated validity and reliability for the sample investigated.

DOI: https://doi.org/10.5007/1980-0037.2008v10n4p399

The abbreviated title of the journal is Rev. Bras. Cineantropom. Desempenho Hum, which should be used in bibliographies, footnotes and bibliographical references. E-ISSN 1980-0037, impressa ISSN 1415-8426, Florianópolis, Santa Catarina, Brazil. This work is licensed under a Creative Commons Attribution 4.0 International License.