Fundamentals of skill [by] A. T. Welford. Welford, A. T. (Alan Traviss) Psychology, Experimental. Performance. Information theory in psychology. BF181 .W4 152 "Distributed in the USA by Barnes & Noble Inc." Bibliography: p. 337-394. London, Methuen, 1968. 1968. 1968 Text 426 p. eng Methuen's manuals of modern psychology