P C Wason

Reasoning about a Rule

P C Wason, P. Wason, 1968, The Quarterly journal of experimental psychology.

Regression in reasoning?

P C Wason, P. Wason, 1969, British journal of psychology.

A Verbal Illusion

P C Wason, P. Wason, S. Reich, 1979, The Quarterly journal of experimental psychology.