scholarly journals Feature-negative effect in rats’ discrimination learning in the runway

1983 ◽  
Vol 11 (3) ◽  
pp. 367-372 ◽  
Author(s):  
Steven J. Haggbloom
Keyword(s):  
Discrimination Learning ◽  
Negative Effect ◽  
Feature Negative

Grey squirrels (Sciurus carolinensis) show a feature-negative effect specific to social learning

2009 ◽  
Vol 13 (2) ◽  
pp. 219-227 ◽  
Author(s):  
Lucy J. Hopewell ◽  
Lisa A. Leaver ◽  
Stephen E. G. Lea ◽  
Andy J. Wills
Keyword(s):  
Social Learning ◽  
Sciurus Carolinensis ◽  
Negative Effect ◽  
Feature Negative ◽  
Grey Squirrels

Behavioural Contrast and Autoshaping

1976 ◽  
Vol 28 (4) ◽  
pp. 661-666 ◽  
Author(s):  
R. C. Morris
Keyword(s):  
Discrimination Training ◽  
Discrimination Learning ◽  
Response Rate ◽  
The Other ◽  
Stimulus Element ◽  
Visual Feature ◽  
Negative Group ◽  
Positive Group ◽  
Feature Positive ◽  
Feature Negative

This experiment was designed to investigate the importance of autoshaping to a signal for reinforcement in the production of behavioural contrast. Two groups of pigeons were given discrimination training on a mult VI-EXT schedule: the stimuli present in the two schedule components shared common attributes, but were distinguished by the presence or absence of a visual feature. For one group (the feature positive group) the feature signalled the availability of reinforcement. For the other group (the feature negative group) the feature signalled nonrein-forcement, and for this group there was no stimulus element which unambiguously signalled reinforcement. The feature positive group showed a higher response rate during the VI component of the mult VI-EXT schedule than the feature negative group. This finding was interpreted as support for the autoshaping explanation of behavioural contrast. The results differed from those of Jenkins and Sainsbury (1969, 1970) in that both the feature positive and the feature negative groups showed discrimination learning.

scholarly journals Feature-negative effect in serial learning

1986 ◽  
Vol 24 (3) ◽  
pp. 217-218 ◽  
Author(s):  
Steven J. Haggbloom ◽  
Frank K. Sheppard
Keyword(s):  
Serial Learning ◽  
Negative Effect ◽  
Feature Negative

Distinctive Phonetic Features as Relevant and Irrelevant Stimulus Dimensions in Speech-Sound Discrimination Learning

1974 ◽  
Vol 17 (3) ◽  
pp. 417-425
Author(s):  
Stuart I. Ritterman ◽  
Nancy C. Freeman
Keyword(s):  
College Students ◽  
Discrimination Learning ◽  
Irrelevant Dimension ◽  
Speech Sound ◽  
Irrelevant Stimulus ◽  
Relevant Dimension ◽  
Phonetic Features ◽  
Sound Discrimination ◽  
Nonsense Syllables

Thirty-two college students were required to learn the relevant dimension in each of two randomized lists of auditorily presented stimuli. The stimuli consisted of seven pairs of CV nonsense syllables differing by two relevant dimension units and from zero to seven irrelevant dimension units. Stimulus dimensions were determined according to Saporta’s units of difference. No significant differences in performance as a function of number of the irrelevant dimensions nor characteristics of the relevant dimension were observed.

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