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Effects of feedback

Effects of feedback

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...

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Are there rapid feedback effects on Approximate Number System acuity?

Marcus Lindskog¹, Anders Winman, Peter Juslin

¹Department of Psychology, Uppsala University Uppsala, Sweden.

Frontiers in Human Neuroscience

|June 20, 2013

Summary

This study investigated if training improves the Approximate Number System (ANS), which supports numerical magnitude representation. Results indicate short-term feedback training did not enhance ANS precision in adults, suggesting motivation may be a key factor.

Keywords:

Approximate Number System estimation feedback learning numerical numerosity

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Area of Science:

Cognitive psychology
Neuroscience
Mathematical cognition

Background:

Humans possess an Approximate Number System (ANS) for non-symbolic numerical magnitude representation.
Individual differences in ANS precision correlate with mathematical abilities.
Previous research suggested ANS precision is malleable through feedback training.

Purpose of the Study:

To replicate findings on the malleability of ANS precision through feedback training.
To investigate whether short-term feedback training enhances numerical discrimination in adults.
To examine the role of motivation in ANS training.

Main Methods:

A control group design was employed to test the effects of feedback.
Participants underwent numerical discrimination tasks with and without feedback.
Perceptual cues were controlled for to isolate numerical processing.
Motivation levels were measured to assess their influence on performance.

Main Results:

No significant learning effects or improvements in discrimination precision were observed in the feedback group.
A small, constant advantage was noted for the feedback group.
Feedback positively impacted participant motivation.
Performance differences were attributed to motivation rather than enhanced numerical acuity.

Conclusions:

Short-term feedback training does not appear to improve ANS precision in adults.
Motivation, potentially enhanced by feedback, may influence performance on numerical tasks.
The number sense (ANS) may not be rapidly adaptable through feedback in adult populations.