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Hysteresis affects approximate number discrimination in young children
Darko Odic1, Howard Hock2, Justin Halberda1
1Psychological and Brain Sciences, Johns Hopkins University.
Journal of Experimental Psychology. General
|November 21, 2012
Summary
Children's number perception is influenced by past experiences. Prior difficult trials, especially with low confidence, impair performance, while easier trials with high confidence improve it.
Area of Science:
- Cognitive Psychology
- Developmental Psychology
- Neuroscience
Background:
- Perceptual decisions are influenced by trial history, a phenomenon known as perceptual hysteresis.
- Understanding how prior experiences shape current perception is crucial for cognitive models.
Purpose of the Study:
- To investigate how the difficulty of preceding trials affects 5-year-old children's performance in numerical discrimination tasks.
- To explore the role of feedback and confidence states in modulating perceptual hysteresis.
Main Methods:
- A 2-alternative forced-choice numerical discrimination task was administered to 5-year-old children.
- Experiments manipulated the difficulty of preceding trials and the type of feedback provided.
- Control conditions ruled out practice effects, disinterest, and simple difficulty/discriminability factors.
Main Results:
- Children's performance was significantly affected by the history of trial difficulty.
- Prolonged experience with low-confidence decisions degraded subsequent performance.
- Prolonged experience with high-confidence decisions enhanced subsequent performance, independent of practice or feedback valence.
Conclusions:
- Perceptual hysteresis in children's numerical tasks is linked to state-dependent confidence levels.
- Confidence states dynamically influence decision-making processes, impacting performance.
- Findings contribute to understanding number perception, confidence representation, and dynamical psychophysics in development.
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