Abstract
If the golfer hits many golf balls but always in a dense fog so that he does not know how the shots really turn out, and therefore, he has no opportunity for making such corrections as might be necessary, it is unlikely that the fact that he has hit several golf balls, under such circumstances, will result in improving his game. Similarly, when a psychiatrist makes many diagnostic evaluations but lacks the opportu nity or fails to follow up his diagnostic conclusions to determine whether or not they were, in fact, and by objective indices, correct, his diagnostic accuracy is not likely to improve (Ziskin, 1975, p. 216).

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