Letters to the Editor

Abstract
Thank you for giving me this opportunity to reply to Doctor Kugel's letter in criticism of our paper, "Pneumoencephalograms and Clinical Behavior." I, too, feel that it is high time pediatricians should know the nature of "developmental testing" and what its potentialities and limitations are. Although it is not possible to present all of the evidence in a letter, I welcome this opportunity to correct some false impressions. Before proceeding to some comments on the validity of infant evaluations, it is necessary to point out that such a discussion is not directly pertinent to the article under consideration. Since the developmental examination was often done several years after the pneumoencephalogram, the mean age of the children at the time of the clinical examination was 22 months, no longer infants, and there was no age difference between the normal and abnormal groups.

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