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The effect of familiarity on visual-search performance: evidence for learned basic features
1Universität Konstanz, Konstanz, Germany. petermal@liverpool.ac.uk
Perception & Psychophysics
|June 21, 2001
Summary
Familiarity can make visual search easier, even among familiar distractors. This challenges previous ideas and suggests familiarity aids distractor grouping or that basic visual features are learnable.
Area of Science:
- Cognitive Psychology
- Visual Perception
Background:
- Familiarity's impact on visual search is debated.
- Previous studies suggested familiarity hinders search among similar distractors.
Purpose of the Study:
- To investigate the effect of familiarity on visual search efficiency.
- To differentiate the roles of item familiarity and feature differences in visual search.
Main Methods:
- German and Slavic participants performed visual search tasks.
- Targets and distractors included familiar (N) and unfamiliar (mirror-N) stimuli.
- Familiarity varied between groups: N familiar for Germans, N and mirror-N for Slavs.
Main Results:
- Search was difficult only for Germans searching for N among mirror-N.
- Efficient search occurred in all other conditions, including familiar targets among familiar distractors.
- This indicates familiarity can facilitate search.
Conclusions:
- Contrary to prior assumptions, familiar items can be searched efficiently among familiar distractors.
- Familiarity likely enhances distractor grouping, improving search performance.
- Findings support the learnability of basic visual features, such as letters.