Inter-rater Reliability of the Test of Gross Motor Development – Third Edition (TGMD-3) Following Raters' Agreement on Measurement Criteria
Creators
- 1. Universidade de Santiago de Compostela
- 2. University of Vigo
- 3. Universidade Federal do Rio Grande do Sul
Description
Abstract:
In this study, we calculated inter-rater reliability of the Test of Gross Motor Development – Third Edition (TGMD-3) after raters reached a consensus regarding measurement criteria. Three raters measured the fundamental movement skills (FMS) of the same 25 children on the TGMD-3 at two different times, using two different methods: (i) once when simply following the measurement criteria in the TGMD-3 manual; and (ii) again, after a 9-month wash-out period, following the raters’ consensus building for the measurement criteria for each skill. After calculating and comparing the inter-rater reliability of these three raters across these two rating times and methods, we found improved inter-rater reliability after the raters’ consensus building discussions on ratings of both locomotor skills (moderate-to-good reliability on 2 of 6 skills initially and at least moderate-to-excellent on 4 of 6 skills following criteria consensus building) and ball skills (moderate-to-good reliability on 1 of 7 skills initially and at least moderate-to-excellent reliability on 4 of 7 skills following criteria consensus building). For subtests scores and on overall test scores, raters achieved at least moderate-to-good reliability on their second, post-consensus-building ratings. Based on this improved reliability following consensus building, we recommend that researchers include rater consensus-building before assessing children’s FMS or guiding curriculum interventions in Physical Education from TGMD-3 data.
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