J. K. Plemons

Modifiability of fluid intelligence in aging: a short-term longitudinal training approach.

P. Baltes, S. Willis, J. K. Plemons, 1978, Journal of gerontology.

Learning-ability relations in adulthood.

D. Hultsch, J. Nesselroade, J. K. Plemons, 1976, Human development.

Recent Findings on Adult and Gerontological Intelligence

P. Baltes, S. Willis, J. K. Plemons, 1975 .