Related Terms. Atrophic Pancreas. Atrophic pancreas is the wasting away of the pancreas usually from chronic pancreatitis or CP. CP is further defined as an inflammatory disease that is advanced and described by permanent morphologic changes and gradual formation of excessive fibrous tissue replacement of the gland.
By this definition, approximately two-thirds of the population scores between IQ 85 and IQ 115, and about 5 percent of the population scores above 125. IQ scores have been shown to be associated with such factors as morbidity and mortality, parental social status, and, to a substantial degree, biological parental IQ.
It compares people of the same age or age category and assumes that IQ is normally distributed, that the average (mean) is 100 and that the standard deviation is something like 15 (IQ tests sometimes differ in their standard deviations).