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Early, equivalent ERP masked priming effects for regular and irregular morphology.
Joanna Morris1, Linnaea Stockall
1School of Cognitive Science, Hampshire College, 893 West St., Amherst, MA 01002, USA. jmorris@hampshire.edu
Brain and Language
|August 25, 2012
Summary
This study shows that both regular and irregular word forms undergo rapid, form-based morphological parsing. This suggests an early, automatic stage in processing complex words, regardless of inflection type.
Area of Science:
- Psycholinguistics
- Cognitive Neuroscience
Background:
- Existing research supports an early, automatic stage of morphological parsing for derivationally affixed words.
- The processing mechanisms for regularly and irregularly inflected word forms remain less understood.
Purpose of the Study:
- To investigate the processing of regularly and irregularly inflected word forms.
- To compare event-related potentials (ERPs) evoked by these two types of morphological complexity.
Main Methods:
- Utilized the masked priming paradigm combined with electroencephalography (EEG) recording.
- Directly compared ERPs elicited by regularly and irregularly inflected word forms.
Main Results:
- Observed equivalent N250 priming effects for both regularly and irregularly inflected forms.
- Demonstrated that morphological complexity is processed similarly regardless of inflection regularity.
Conclusions:
- Supports a model of rapid, form-based morphological parsing for all morphologically complex words.
- Suggests that inflectional regularity does not alter the early stages of lexical processing.
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