1. Why study aging?;Birren;Am. Psychologist,1958
2. Psychobiological decline;Vinson;Internal. Rec. Med.,1952
3. The Gesell incomplete man test;Ames;J. Genet. Psychol.,1943
4. Age changes in the Rorschach responses of a group of elderly individuals;Ames;J. Genet. Psychol.
5. Age changes in the Rorschach responses of individual elderly subjects;Ames;J. Genet. Psychol.