Is Consciousness Epiphenomenal?

J.S. McIntosh

"Admittedly, the testimony of direct experience and of introspection is fallible. But to maintain that planning, deliberation, preference, choice, volition, pleasure, pain, displeasure, love, hate, attention, vigilance, enthusiasm, grief, indignation, expectations, remembrances, hopes, wishes, etc. are not among the causal factors which determine human behaviour, is to fly in the face of the commonest of evidence, or else to deviate in a strange and unjustifiable way from the ordinary use of language."

Herbert Feigl (1958, pp. 388-9)

Is Consciousness Epiphenomenal?