Testing the scalar expectancy theory (SET) and the learning-to-time model (LeT) in a double bisection task

@article{Machado2005TestingTS,
  title={Testing the scalar expectancy theory (SET) and the learning-to-time model (LeT) in a double bisection task},
  author={Armando Machado and Paulo Pata},
  journal={Animal Learning \& Behavior},
  year={2005},
  volume={33},
  pages={111-122}
}
Two theories of timing, scalar expectancy theory (SET) and learning-to-time (LeT), make substantially different assumptions about what animals learn in temporal tasks. In a test of these assumptions, pigeons learned two temporal discriminations. On Type 1 trials, they learned to choose a red key after a 1-sec signal and a green key after a 4-sec signal; on Type 2 trials, they learned to choose a blue key after a 4-sec signal and a yellow key after either an 8-sec signal (Group 8) or a 16-sec… 
Further tests of the Scalar Expectancy Theory (SET) and the Learning-to-Time (LeT) model in a temporal bisection task
TLDR
To contrast two models of timing, Scalar Expectancy Theory and Learning to Time, pigeons were exposed to a double temporal bisection procedure and only LeT made specific predictions regarding the reacquisition of the four temporal discriminations.
Context effects in a temporal discrimination task" further tests of the Scalar Expectancy Theory and Learning-to-Time models.
TLDR
The present study adds to the literature the finding that the context effect occurs even when the two basic discriminations are never combined in the same session, which is consistent with LeT.
CONTEXT EFFECTS IN A TEMPORAL DISCRIMINATION TASK: FURTHER TESTS OF THE SCALAR EXPECTANCY THEORY AND LEARNING‐TO‐TIME MODELS
Pigeons were trained on two temporal bisection tasks, which alternated every two sessions. In the first task, they learned to choose a red key after a 1-s signal and a green key after a 4-s signal;
Comparison of Scalar Expectancy Theory (SET) and the Learning-to-Time (LeT) model in a successive temporal bisection task
TLDR
Results were consistent with LeT's predictions, showing that the context effect is obtained even when subjects do not need to make a choice between two keys presented simultaneously.
The effect of sample duration and cue on a double temporal discrimination
Abstract To test the assumptions of two models of timing, Scalar Expectancy Theory (SET) and Learning to Time (LeT), nine pigeons were exposed to two temporal discriminations, each signaled by a
The context effect as interaction of temporal generalization gradients: Testing the fundamental assumptions of the Learning-to-Time model
TLDR
Results showed that preference for Green over Blue increased with sample duration and that the general shape of the function could be predicted from the generalization gradients.
Context effect in a temporal bisection task with the choice keys available during the sample
TLDR
In a symbolic matching to sample task, six pigeons learned to associate different sample durations with different comparison stimuli, which tested the predictions of two timing models, Scalar Expectancy Theory and the Learning-to-Time (LeT) model.
Emergent relations in pigeons following training with temporal samples
TLDR
P pigeons are investigated using a symbolic matching-to-sample task with temporal stimuli as the samples and hues as the comparisons, suggesting, for the first time in pigeons, the emergence of novel relations that involve temporal stimulus as nodal samples.
The interaction of temporal generalization gradients predicts the context effect.
TLDR
Results showed that on choice trials, preference for Green over Red increased with sample duration, the context effect; and the two generalization gradients predicted the average context effect well, suggesting the Learning-to-Time model accounts for the major trends in the data.
Dupla bissecção temporal: Testes críticos de dois modelos de timing
Throughout six experiments, a double temporal bisection procedure was used to test the predictions of Scalar Expectancy Theory (SET) and the Learning-to-Time (LeT) model. In this procedure, pigeons
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Two theories of timing, scalar expectancy theory (SET) and learning to time (LeT), make substantially different assumptions about what animals learn in temporal tasks. In a test of these assumptions,
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