title: The Stimulus in Learning: S-R Theory Versus Two Types of Stimulus Selection.
authors.affiliation: a Yale University and San Francisco State College , USA.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Sobel
authors.affiliation: a Yale University and San Francisco State College , USA.
authors.forename: Theodore E
authors.initials: TE
authors.lastname: Steiner