Stimulus generalization along the dimension of S+ as a function of discrimination learning with and without error.

Abstract

Examined the effect of errorless interdimensional discrimination on generalization along the S+ dimension using the response prevention method or errorless discrimination learning. Training was given to 3 groups of 20 pigeons each. 1 group was provided single-stimulus training to a 555-mMU light. The other 2 groups were given discrimination training to a 555-mMU S+ and a white vertical line on a black surround, S-. 1 of these groups was trained with errors, the other without errors. When tested for generalization to the S+ dimension (wavelength), both discrimination groups showed gradients steeper than did controls, with the error group gradient the most steep. When the previous S- was superimposed on each test color, the behavior of the errorless-trained Ss was most greatly altered. These results are taken to contradict H. S. Terrace's (see 38:1 and 41:3) contention that an errorless S- is functionally "neutral." (PsycINFO Database Record (c) 2006 APA, all rights reserved)