In encouraging mobility instructors to evaluate aspects of their procedure, a simple controlled comparison is presented as an example. Two matched groups, each o f six blind 8 and 9 year olds, initially comparable on the Cratty and Sams test of body image, were assigned to either training or control conditions. The individuals in the training group received two periods of extra training in concepts basic to mobility; and the control or compared group received no extra training. Significant improvements were demonstrated, not only in these specific concepts but also on the general body image test when their scores were compared with those of the control group.
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