Walter R. Cunningham

Psychology of Adult Development and Aging

James E. Birren, Koichi Yamamoto, J. Birren, 1983 .

Age Changes in the Factor Structure of Intellectual Abilities in Adulthood and Old Age

James E. Birren, J. Birren, Walter R. Cunningham, 1980 .

14 Intellectual Abilities and Age: Concepts, Theories and Analyses

Adrian Tomer, A. Tomer, Walter R. Cunningham, 1990 .

Relative Roles of Cognitive Ability and Practical Intelligence in the Prediction of Success

Gordon E. Taub, Stephen A. Sivo, S. Sivo, 2001, Psychological reports.