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Transposed-Letter Priming Across Inflectional Morpheme Boundaries.

Ehsan Shafiee Zargar1, Naoko Witzel2

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Area of Science:

  • Psycholinguistics
  • Cognitive Science
  • Morphological Processing

Background:

  • Previous research on transposed-letter (TL) priming focused on derived or compound words.
  • Inflectional morphology, a productive word structure, had not been extensively studied in this context.
  • Masked priming is a key technique for investigating word recognition.

Purpose of the Study:

  • To investigate if TL priming effects extend to inflectionally complex words.
  • To determine if transposed letters across morphological boundaries elicit a priming effect.
  • To understand the sequence of processing between letter position assignment and morphological decomposition.

Main Methods:

  • Two masked priming experiments were conducted.
  • Nonword primes with transposed letters were used, either within a root morpheme or across morphemes.
  • Targets included inflected words (Experiment 1) and root words (Experiment 2).

Main Results:

  • Similar TL priming effects were observed for within-morpheme and across-morpheme transpositions.
  • This effect was consistent for both inflected and root word targets.
  • The findings indicate that morphological decomposition occurs after letter position assignment.

Conclusions:

  • Transposed-letter priming is robust and operates across inflectional morphological boundaries.
  • Word recognition processes assign letter positions before segmenting morphemes.
  • This provides further evidence for the temporal order of word processing stages.