The functional form of performance improvements in perceptual learning: learning rates and transfer.

  • Dosher B
  • Lu Z
  • 5

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.

Abstract

The functional form of performance improvements has been extensively studied in speeded cognitive and motor tasks; in such tasks, reductions in response times have been characterized by the ubiquitous power law of learning or by a simpler exponential form. Performance improvements in perceptual capacities are also important in expertise, but their functional form is unknown. This study investigated the functional form of perceptual learning. For individual observers, reductions in thresholds were best described by an exponential function, rather than a power or compound exponential and power (apex) function. Learning was specific to orientation, a result that supports the perceptual locus of the learning, and was decoupled in high and low external noise, a result that reflects separable learning mechanisms in the two conditions. The simple exponential form of learning implies a constant relative rate of learning throughout practice; there was no evidence supporting multilevel hypotheses, such as serial reverse hierarchical and parallel-learning models, that posit multiple processes of learning characterized by different rates.

Author-supplied keywords

  • Contrast Sensitivity
  • Contrast Sensitivity: physiology
  • Discrimination (Psychology)
  • Discrimination (Psychology): physiology
  • Discrimination Learning
  • Discrimination Learning: physiology
  • Humans
  • Learning
  • Learning: physiology
  • Orientation
  • Orientation: physiology
  • Pattern Recognition
  • Perception
  • Perception: physiology
  • Perceptual Masking
  • Perceptual Masking: physiology
  • Photic Stimulation
  • Photic Stimulation: methods
  • Practice (Psychology)
  • Sensory Thresholds
  • Sensory Thresholds: physiology
  • Task Performance and Analysis
  • Time Factors
  • Transfer (Psychology)
  • Transfer (Psychology): physiology
  • Visual
  • Visual Perception
  • Visual Perception: physiology
  • Visual: physiology

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Authors

  • B A Dosher

  • Z L Lu

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free