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Familiarity acts as a reduction in objective complexity.

Jing Zhang1,2, Xiaonan L Liu3, Matt So4

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Summary
This summary is machine-generated.

Stimulus complexity is not absolute but relative, influenced by prior experience. What seems complex depends on an individual

Keywords:
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Area of Science:

  • Cognitive Psychology
  • Working Memory Research
  • Cross-Cultural Studies

Background:

  • High-complexity stimuli are theorized to increase working memory load.
  • Operational definitions and measures for stimulus complexity remain underdeveloped.
  • Prior experience is hypothesized to influence how complexity affects cognitive tasks.

Purpose of the Study:

  • To investigate the role of prior experience in defining stimulus complexity.
  • To determine if complexity is an inherent property of stimuli or relative to the observer.
  • To examine the impact of stimulus complexity on working memory performance across different cultural groups.

Main Methods:

  • Cued-recall tasks were administered to Chinese and English speakers using stimuli varying in visual elements (strokes) and familiarity.
  • Experiments manipulated stimulus features (Chinese pseudocharacters, pseudowords, Ethiopic features) and response terms (familiar English words).
  • Controlled for potential confounds such as rehearsal ease and general learning abilities in Chinese speakers.

Main Results:

  • English speakers showed significantly worse performance on pseudowords (high visual elements) compared to Ethiopic features or pseudocharacters.
  • Chinese speakers performed similarly on pseudowords and pseudocharacters but worse on unfamiliar Ethiopic cues.
  • Complexity effects were not observed for Chinese speakers when stimuli were familiar, suggesting a relative nature of complexity.

Conclusions:

  • Stimulus complexity is not solely determined by the number of visual elements.
  • Prior knowledge and experience significantly modulate the perception and cognitive impact of stimulus complexity.
  • Working memory demands of stimuli are relative to an individual's existing knowledge base.