D G CONRAD

Avoidance behavior and the development of gastroduodenal ulcers.

J V BRADY, R W PORTER, D G CONRAD, 1958, Journal of the experimental analysis of behavior.

The effects of deprivation upon temporally spaced responding.

M SIDMAN, R J HERRNSTEIN, D G CONRAD, 1958, Journal of the experimental analysis of behavior.

Latent learning observed through negative transfer.

D G CONRAD, K. F. Muenzinger, D. Conrad, 1953, Journal of comparative and physiological psychology.