This tends to be higher for individual than team sports. Snowboarding: theconstruction of gender in an emergingsport. Bonferroni adjustments for multiple comparisons were applied. New York, NY: Academic Press. Expertnovice differences in performance skills and problem representations of youth and adults during tennis competition. The included articles were analyzed qualitatively, with an integrative approach. He believed knowledge was constructed on cognitive structures and he believed we developed our own cognitive structures through schema by accommodating and assimilating information. Retirement experiences successful Olympic athletes. The effect of mental practice onmuscle strength and EMG activity. Environmental constraints include temperature, light, wind, audience, etc.