Abstract
MUch time and effort has been expanded on the establishment of height and weight norms for normal children. Such norms fill an obvious need. They classify children and they are useful for studying progress over relatively long periods of time. However, for following the progress of children over shorter periods it is far more helpful to study growth increments. Norms for mean growth increments can be easily obtained from the usual height and weight tables (mean increment = difference between means at successive age levels). But the variability of increments must be calculated from raw data. Such norms have apparently not been published. This study was undertaken ibecause it was felt that suca norms can be of value to all interested in the progress of normal and abnormal children.
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