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Pseudohomophone effects and models of word recognition
M S Seidenberg1, A Petersen, M C MacDonald
1Program in Neural, Informational and Behavioral Sciences, University of Southern California, Los Angeles 90089-2520, USA. marks@neuro.usc.edu
Summary
Pseudohomophone processing differs between lexical decision and naming tasks. Lexical decision involves phonological and semantic activation, while naming relies on articulation ease, impacting word recognition models.
Area of Science:
- Cognitive Psychology
- Psycholinguistics
- Computational Neuroscience
Background:
- Pseudohomophones, nonwords sounding like real words, are crucial for understanding word recognition.
- Previous research (McCann & Besner, 1987; McCann, Besner, & Davelaar, 1988) established pseudohomophone effects.
Purpose of the Study:
- To investigate the underlying mechanisms of pseudohomophone processing in lexical decision and naming tasks.
- To determine if pseudohomophone effects differ across tasks and experimental conditions.
Main Methods:
- Experiment 1: Compared naming and lexical decision latencies for pseudohomophones versus nonpseudohomophones.
- Experiment 2: Examined naming latencies under immediate and delayed conditions with pseudohomophones and nonpseudohomophones.
Main Results:
- Pseudohomophones showed faster naming but slower lexical decision latencies than nonpseudohomophones.
- The pseudohomophone effect magnitude in lexical decision correlated with subject speed, unlike naming.
- Experiment 2 confirmed a consistent pseudohomophone effect in naming across conditions.
Conclusions:
- Pseudohomophone effects stem from distinct cognitive processes in lexical decision (phonological/semantic activation) versus naming (articulatory ease).
- Findings challenge models of word recognition that lack word-specific representations, such as Seidenberg and McClelland's (1989) model.