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Related Concept Videos

Effects of feedback01:24

Effects of feedback

559
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
559

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Related Experiment Video

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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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How learning influences non-symbolic numerical processing: effects of feedback in the dot comparison task.

Wiebke Hofmann1,2, Annette Kinder1, Judit Pekár1

  • 1Institute of Psychology of Learning, Department of Education and Psychology, Free University of Berlin, Berlin, Germany.

Frontiers in Psychology
|February 14, 2024
PubMed
Summary

Learning with feedback impacts how visual cues influence number estimation, specifically reducing the effect of dot size but not convex hull. This suggests targeted learning of visual properties in numerosity tasks.

Keywords:
dot comparisoninhibitionlearningnon-symbolic numerositysensory integration

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Numerical Cognition

Background:

  • Human numerosity estimation relies on processing sets of elements.
  • Continuous visual properties, like dot size and arrangement, influence numerosity judgments.
  • The impact of learning and experience on visual cue influence in numerosity tasks is not fully understood.

Purpose of the Study:

  • To investigate how learning with feedback affects the influence of visual properties on numerosity estimation.
  • To determine if feedback differentially impacts the influence of specific visual cues (dot diameter, convex hull).

Main Methods:

  • Participants performed a dot comparison task (identifying the more numerous array).
  • A learning phase introduced trial-by-trial feedback for an experimental group; a control group received no feedback.
  • Visual properties (convex hull, average dot diameter) were manipulated congruently and incongruently with numerosity.

Main Results:

  • Feedback did not alter overall performance but selectively reduced the impact of dot diameter in the experimental group.
  • The reduced influence of dot diameter persisted even when combined with convex hull manipulation.
  • Performance on incongruent dot size trials correlated with arithmetic task performance, but not inhibition task performance.

Conclusions:

  • Learning with feedback can selectively alter the weighting of specific visual cues in numerosity judgments.
  • Sensory integration models, involving weighted cue combinations, may explain these findings.
  • Future research should explore which visual properties are susceptible to learning and the conditions under which learning occurs.