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Detectability and criterion measures in temporal generalization.

J H Wearden1

  • 1School of Psychology, Dorothy Hodgkin Building, Keele University, Keele, Staffordshire ST5 5BG, UK. j.h.wearden@psy.keele.ac.uk

Behavioural Processes
|March 11, 2008
PubMed
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Computer simulations explored temporal generalization tasks, linking timing sensitivity to detectability (d') and threshold to decision criterion (beta). This supports the psychological equivalence of these measures in signal-detection theory.

Area of Science:

  • Cognitive Psychology
  • Computational Neuroscience
  • Psychophysics

Background:

  • Temporal generalization tasks assess how timing information is processed.
  • Signal-detection theory (SDT) provides measures like detectability (d") and decision criterion (beta).
  • Theoretical models of timing involve parameters such as "timing sensitivity" and "threshold."

Purpose of the Study:

  • To examine the relationship between theoretical parameters of timing models and SDT measures.
  • To investigate the psychological equivalence of "timing sensitivity" and "threshold" to "detectability" (d") and "decision criterion" (beta), respectively.

Main Methods:

  • Computer simulations of performance on "normal" and "episodic" temporal generalization tasks.
  • Analysis of how changes in "timing sensitivity" and "threshold" affected d" and beta.

Related Experiment Videos

Main Results:

  • Changes in "timing sensitivity" primarily altered d", indicating a link to detectability.
  • "Threshold" changes predominantly affected beta, aligning with decision criterion.
  • The findings support the psychological equivalence of timing model parameters and SDT measures.

Conclusions:

  • "Timing sensitivity" and "detectability" (d") are psychologically related.
  • "Threshold" and "decision criterion" (beta) are psychologically related.
  • While SDT can account for some deviations in temporal generalization, non-peaked gradients present challenges.