Test of Gross Motor Development-2 Scores Differ Between Expert and Novice Coders

in Journal of Motor Learning and Development
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  • 1 University of Michigan
  • 2 University of South Carolina
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The Test of Gross Motor Development, 2nd edition (TGMD-2), is one of the most widely used measures of motor skill competence. The purpose of this study was to examine if differences in scores exist between expert and novice coders on the TGMD-2 (Ulrich, 2000).


Three coders, one expert and two novices, reviewed and scored young children’s (N = 43; Boys = 57%; Mage = 4.88, SD = 0.28) TGMD-2 data. The kappa statistic was used to determine agreement between expert and novice coders on the locomotor and object control subscale of the TGMD-2. Independent samples t tests and percent differences were then used to examine scoring differences for each of the twelve skills.


Results support that expert and novice coders do not demonstrate significant agreement when scoring the TGMD-2 except for when scoring the kick (t41 = –1.3, p = .2) and the gallop (t41= –1.7, p = .09).


This work demonstrates that more stringent or consistent training regimens are needed before allowing novices to code TGMD-2 data.

Palmer is with the School of Kinesiology, University of Michigan, Ann Arbor, MI. Brian is with the Dept. of Physical Education, University of South Carolina, Columbia, SC.

Address author correspondence to Kara Palmer at palmerka@umich.edu
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