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The main point in Ericsson et. Al.(1993) is that in order to achieve expert performance, one must engage in deliberate practice with the explicit goal of constant improvement. This theory further dismisses to a large extent the role of genetics, in which Ericsson ....

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.... be able to achieve that same level of performance because their body is physiologically incapable. Furthermore, physiologist Dr. Astrand contends that up to 90% of the variance in aerobic performance is due to one's genes, regardless of training programs. (McArdle,1994). But sports like golf are probably influenced very little by genetics because skill acquisition far overshadows physical ability. History provides many examples of athletes who apparently has a poor genetic endowment, yet by hard training and motivation went on to international success (Shepard,1987). In conclusion, expert performance is most likely due to a complex interactio ....