Greenspoon, J. (1955). The reinforcing effect of two spoken sounds on the frequency of two responses. American Journal of Psychology, 68(3), 409-416. doi:10.2307/1418524. [FULLTEXT]
A History of Psycholinguistics
Bibliography for Levelt (2013)
Greenspoon, J. (1955). The reinforcing effect of two spoken sounds on the frequency of two responses. American Journal of Psychology, 68(3), 409-416. doi:10.2307/1418524. [FULLTEXT]