The human brain is most vulnerable from two sources of damage: external trauma and chemical reactions. We now recognize and distinguish two types of symptoms following brain damage: neurological and psychological. In this study emphasis will be placed upon the psychological behavior of the individual. This is justified with the understanding that the psychological behavior will reflect to some extent the neurological changes which might have occurred in the brain. Furthermore, the concern in this study is with that part of behavior which is evoked whenever there is organic involvement and to which it is possible to apply accepted psychometric techniques. Although the nature and the extent of the damage to the brain as well as the previous personality of the individual are both highly influential on the behavior changes which follow brain damage, numerous general patterns of behavior can be safely expected in most cases of damage.
Proceedings of the Iowa Academy of Science
©1956 Iowa Academy of Science, Inc.
"Validation of the Grassi Block Substitution Test for Measuring Brain Pathology,"
Proceedings of the Iowa Academy of Science, 63(1), 627-633.
Available at: https://scholarworks.uni.edu/pias/vol63/iss1/70