ABSTRACT
Insofar as the inheritance of intelligence is concerned, the results of the World War I Army Alpha Intelligence Test were about as inconclusive as any data could be. Not so the test's correlation with environmental factors. A clear relationship exists between the draftees' test scores and annual per-pupil expenditures by the States where these young men went to school. The animals so handicapped were—like human beings in the same fix—more sluggish, less aware of minor changes in their environment, and in learning situations made many more errors than their normal littermates. With respect to human beings, one should remember that a malnourished child is almost invariably one whose total environment is bad for optimum physical or mental development: housing is poor and so is hygiene, the family structure is unstable, cultural deprivation is acute.
