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Instructions and word bias in a lexical decision task.
1Psychology Department, University of New Brunswick, Bag Service No. 45444, Fredericton, NB, Canada. piercey@unb.ca
Psychological Reports
|September 22, 2005
Summary
Participants show a strong bias towards identifying words, even when instructed otherwise. This inherent word recognition advantage, likely from prior experience, is resistant to changes in task instructions.
Area of Science:
- Cognitive Psychology
- Experimental Psychology
- Psycholinguistics
Background:
- Lexical decision tasks (LDTs) typically show faster and more accurate word identification than nonword identification.
- Standard instructions in LDTs emphasize word identification.
Purpose of the Study:
- To investigate if altering instructions to prioritize nonword identification can modify the typical word advantage in LDTs.
- To determine the malleability of the word superiority effect based on task focus.
Main Methods:
- A lexical decision task was administered to 48 participants.
- Participants were divided into two groups: one receiving standard word-focused instructions, the other receiving nonword-focused instructions.
- Performance (accuracy and speed) in identifying words versus nonwords was measured.
Main Results:
- A significant main effect of item type (word vs. nonword) was observed, confirming the general word advantage.
- No significant interaction was found between instruction type (word vs. nonword focus) and item type.
- The manipulation of instructions did not alter the fundamental word identification advantage.
Conclusions:
- The strong bias towards word identification in LDTs appears robust and resistant to instructional manipulation.
- This suggests that prior experience and ingrained cognitive biases heavily influence lexical decision-making.
- Findings highlight potential limitations in using instructional changes to modify fundamental cognitive effects in LDTs.