W A Roberts

Techniques of housing and maintaining a large pigeon colony.

M E Bitterman, D H Bullock, W A Roberts, 1961, Journal of the experimental analysis of behavior.

Timing light and tone signals in pigeons.

W A Roberts, K. Cheng, W. Roberts, 1989, Journal of experimental psychology. Animal behavior processes.

Judgements of ordinality and summation of number symbols by squirrel monkeys (Saimiri sciureus).

W A Roberts, W. Roberts, A. Olthof, 1997, Journal of experimental psychology. Animal behavior processes.

Further evidence for hierarchical chunking in rat spatial memory.

W A Roberts, W. Roberts, T Macuda, 1995, Journal of experimental psychology. Animal behavior processes.

Summation of symbols by pigeons (Columba livia): the importance of number and mass of reward items.

W A Roberts, W. Roberts, A. Olthof, 2000, Journal of comparative psychology.

Memory deficit caused by compressed air equivalent to 36 meters of seawater.

W A Roberts, W. Roberts, R B Philp, 1989, The Journal of applied psychology.

Memory for pictures of upright and inverted primate faces in humans (Homo sapiens), squirrel monkeys (Saimiri sciureus), and pigeons (Columba livia).

W A Roberts, W. Roberts, M T Phelps, 1994, Journal of comparative psychology.