Word and pseudoword superiority effects on letter position processing in developing and skilled readers

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Neuroscience

Background:

• Letter position processing undergoes changes during reading development.
• The precise role of the developing orthographic lexicon in these changes remains unclear.
• Understanding visual word recognition is crucial for reading development theories.

Purpose of the Study:

• To investigate the role of the developing orthographic lexicon in letter position processing.
• To differentiate the influence of whole-word representations versus orthotactic constraints in developing readers.
• To examine age-related changes in visual word recognition.

Main Methods:

• A novel variant of the Reicher-Wheeler task was administered to children (7-12 years) and adults.
• Participants identified letters in anagram words, pseudowords, and illegal nonwords.
• The word superiority effect (WSE) and pseudoword superiority effect (PSE) were measured.

Main Results:

• The pseudoword superiority effect (PSE) increased with orthographic skills in schoolchildren.
• The word superiority effect (WSE) was observed only in adult readers.
• WSE magnitude correlated positively with orthographic skill in adults.

Conclusions:

• Reading development involves distinct shifts in visual word recognition strategies.
• Early reading skills rely more on orthotactic constraints, while mature reading utilizes whole-word representations.
• Findings inform models of reading development and visual word recognition.