Word and Person Effects on Decoding Accuracy: A New Look at an Old Question

Area of Science:

• Psycholinguistics
• Developmental Psychology
• Educational Psychology

Background:

• Decoding is a critical skill for reading development.
• Research has identified both individual (person) and word-specific factors influencing decoding accuracy.
• Grapheme-phoneme correspondence (GPC) knowledge is foundational to decoding, but its precise role requires further elucidation.

Purpose of the Study:

• To investigate the interplay between person and word factors in decoding.
• To examine the necessity and sufficiency of GPC knowledge for decoding unfamiliar words.
• To analyze how phonemic awareness and rapid naming skills interact with word characteristics in the decoding process.

Main Methods:

• A crossed random-effects model was employed with 196 first-grade students.
• A researcher-developed pseudoword list served as the primary outcome measure.
• GPC knowledge was analyzed as both person-specific and word-specific.

Main Results:

• GPC knowledge was found to be neither necessary nor sufficient for accurate word decoding.
• Controlling for word-specific GPC knowledge, lower phonemic awareness and slower rapid naming significantly predicted lower probabilities of correct decoding.
• A significant person-by-word interaction indicated that students with lower phonemic awareness struggled more with complex vowel graphemes than complex consonant graphemes during decoding.

Conclusions:

• Decoding proficiency is influenced by a complex interaction of individual skills and word properties.
• Phonemic awareness and rapid naming are crucial for applying GPC knowledge, especially for challenging word features.
• Future research should explore these interactions further to inform reading instruction.