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The Brain and Child Behavior

Arch Gen Psychiatry. 1961;4(6):531-547. doi:10.1001/archpsyc.1961.01710120001001.
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I searched in vain . . . for any awareness of the other variable which seems to me so obvious, namely, that he might be dealing with an organism defective by constitution or development. Percival Bailey (1960).7*

It is a fair criticism of the experimental study of the motor cortex that it has stopped short of giving us a clear insight into the functional organization of that cortex ... I venture to submit that this failure is due not so much to lack of relevant facts as to one of conceptual thinking about them. F.M.R. Walshe (1947).

I am going to accept the challenge implicit in these 2 quotations only because the responsibility, honor, and humility I feel in being asked to give this first Percival Bailey Lecture gives me that boldness.

Newton has been quoted as saying that it was no wonder that he could see so far


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