Müller and Schumann (1894) discovered that more time [p. 644] was necessary to relearn a series of nonsense syllables if the stimulus syllables had been associated with other syllables in the meantime. From their results they deduced the law of associative inhibition which is quoted by Kline (1921, p. 270) as follows: "If a is already connected with b, then it is difficult to connect it with k, b gets in the way." Nonsense syllables were also used by Shepard and Fogelsonger (1913) in a series of experiments in association and inhibition. Only three subjects were used in any experiment and the changes introduced to produce the inhibition were so great in many cases as to present novel situations. This latter fact was shown by the introspections. The results showed an increase in time for the response which corresponded roughly to the increase in the complexity of the situation. The only conclusion was stated thus: "We have found then that in acquiring associations there is involved an inhibitory process which is not a mere result of divided paths but has some deeper basis yet unknown"