Early decomposition in visual word recognition: Dissociating morphology, form, and meaning

Area of Science:

• Psycholinguistics
• Cognitive Psychology
• Neuroscience

Background:

• Visual word recognition involves processing word form, meaning, and structure.
• Derivational morphology, the formation of new words from existing ones, plays a role in lexical access.
• The relative timing and interplay of morphological, semantic, and orthographic factors in early word recognition remain debated.

Purpose of the Study:

• To investigate the role of morphological, semantic, and form-based factors in early visual word recognition.
• To determine if morphological decomposability or semantic relatedness drives early word processing.
• To examine these effects across different stimulus onset asynchronies (SOAs) using a masked priming paradigm.

Main Methods:

• A masked priming paradigm was employed with English derivational morphology.
• Stimulus pairs varied in morphological decomposability, semantic relatedness, and orthographic relatedness.
• Experiments used three SOAs (36, 48, and 72 ms) and reversed prime-target order in a second experiment.

Main Results:

• Morphological decomposability significantly influenced word recognition at all tested SOAs.
• Orthographic relatedness showed no significant effects across any SOA.
• Semantic relatedness did not interact with morphological effects, indicating independence.

Conclusions:

• Early visual word recognition is primarily driven by morphological decomposability.
• Morphological effects are independent of semantic relatedness and central lexical representations.
• A segmentation process based on morphological structure precedes semantic integration in word recognition.