Role of stimulus comparison in children's discrimination learning.

1966 ◽  
Vol 72 (2) ◽  
pp. 263-270 ◽  
Author(s):  
Morton Rieber
Keyword(s):  
Discrimination Learning ◽  
Stimulus Comparison

Role of Reinforcement and Response Cost in Discrimination Learning

1983 ◽  
Vol 53 (1) ◽  
pp. 207-211 ◽  
Author(s):  
James T. Trent
Keyword(s):  
Discrimination Learning ◽  
The Other ◽  
Response Cost ◽  
Facilitative Effect ◽  
High Anxiety ◽  
The People

Level of anxiety and condition of reinforcement or response cost separately affect the rate of discrimination learning. This study examined the extent to which discrimination learning by people reporting high anxiety or low anxiety was affected by reinforcement or response cost. 40 adults volunteered and were assigned to either the feedback-only, reinforcement-only, response cost-only, or reinforcement-response cost condition. Analysis indicated that people reporting low anxiety and receiving reinforcement for correct responses and response cost for incorrect responses learned the discrimination faster than people in the other groups. A weaker demonstration of the facilitative effect of reinforcement and response cost was noted in the people reporting high anxiety.

The role of stimulus comparison in animal perceptual learning: Effects of a distractor placement

2018 ◽  
Vol 71 (12) ◽  
pp. 2488-2496 ◽  
Author(s):  
Sergio A Recio ◽  
Adela F Iliescu ◽  
Isabel de Brugada
Keyword(s):  
Perceptual Learning ◽  
Learning Process ◽  
Time Lapse ◽  
Animal Research ◽  
Learning Effects ◽  
Stimulus Comparison ◽  
Human Research ◽  
Short Time ◽  
Effect Experiment

Research on perceptual learning shows that the way stimuli are presented leads to different outcomes. The intermixed/blocked (I/B) effect is one of these outcomes, and different mechanisms have been proposed to explain it. In human research, it seems that comparison between stimuli is important, and the placement of a distractor between the pre-exposed stimuli interferes with the effect. Results from animal research are usually interpreted in different terms because the type of procedure normally used in animal perceptual learning does not favour comparison. In our experiments, we explore the possibility that a distractor placed between the to-be-discriminated stimuli may interfere with the perceptual learning process in rats. In Experiment 1, two flavoured solutions are presented in an I/B fashion, with a short time lapse between them to favour comparison, showing the typical I/B effect. In Experiment 2, we introduced a distractor in between the solutions, abolishing this effect. Experiment 3 further replicates this by comparing two intermixed groups with or without distractor. The results replicate the findings from human research, suggesting that comparison also plays an important role in animal perceptual learning.

Hippocampal-prefrontal theta coupling develops as mice become proficient in associative odorant discrimination learning

2021 ◽  
Author(s):  
Daniel Ramirez-Gordillo ◽  
Andrew A. Parra ◽  
K. Ulrich Bayer ◽  
Diego Restrepo
Keyword(s):  
Learning And Memory ◽  
Discrimination Learning ◽  
Gamma Oscillations ◽  
Oscillatory Activity ◽  
Dependent Protein Kinase ◽  
Dependent Protein ◽  
Theta Phase ◽  
Phase Amplitude ◽  
The Brain

Learning and memory requires coordinated activity between different regions of the brain. Here we studied the interaction between medial prefrontal cortex (mPFC) and hippocampal dorsal CA1 during associative odorant discrimination learning in the mouse. We found that as the animal learns to discriminate odorants in a go-no go task the coupling of high frequency neural oscillations to the phase of theta oscillations (phase-amplitude coupling or PAC) changes in a manner that results in divergence between rewarded and unrewarded odorant-elicited changes in the theta-phase referenced power (tPRP) for beta and gamma oscillations. In addition, in the proficient animal there was a decrease in the coordinated oscillatory activity between CA1 and mPFC in the presence of the unrewarded odorant. Furthermore, the changes in PAC resulted in a marked increase in the accuracy for decoding odorant identity from tPRP when the animal became proficient. Finally, we studied the role of Ca2+/calmodulin-dependent protein kinase II α (CaMKIIα), a protein involved in learning and memory, in oscillatory neural processing in this task. We find that the accuracy for decoding the odorant identity from tPRP decreases in CaMKIIα knockout mice and that this accuracy correlates with behavioral performance. These results implicate a role for PAC and CaMKIIα in olfactory go-no go associative learning in the hippocampal-prefrontal circuit.

scholarly journals A therapy programme for pre-school language impaired children

1976 ◽  
Vol 23 (1) ◽  
Author(s):  
Linda Narun
Keyword(s):  
Language Learning ◽  
Discrimination Learning ◽  
Syntactic Analysis ◽  
Developmental Sequence ◽  
Language Impaired ◽  
Auxiliary Verbs ◽  
Impaired Children ◽  
Therapy Programme

This study aimed to establish effective language programmes for pre-school language impaired children based on psycholinguistic principles. Eight language-impaired children 6 males and 2 females between the ages of 3 and 6 years, were the subjects. Language samples were transcribed and subjected to syntactic analysis; semantic aspects were also considered and programmes developed for each subject, based on the information obtained from the language analyses. A developmental sequence was adopted as the basis for therapy A 'slot-method' was used in which language was taught as rule-operated behaviour Principles of discrimination learning were adopted for teaching some aspects of grammar. Auxiliary verbs are reported in detail as this was the most universal error and difficult to teach. The role of imitation in language learning and therapy is discussed.

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