Development of memory structures for homographs using pathfinder network representations.

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Psycholinguistics

Background:

• Semantic priming effects are often absent in children for homographs at short stimulus onset asynchrony (SOA).
• Spreading activation theories may predict this absence, suggesting potential differences in memory structures between children and adults.
• Understanding these developmental differences is crucial for explaining variations in cognitive processing.

Purpose of the Study:

• To investigate developmental differences in memory structure representations for homographs in children and adults.
• To explore whether these structural differences explain the lack of semantic priming in children.
• To examine the role of associative strength and network distances in memory organization.

Main Methods:

• Utilized the Pathfinder algorithm to measure the development of memory structure representations for homographs.
• Experiment 1 analyzed network structure using link counts, closeness measures (C), and node distances.
• Experiments 2 and 3 investigated cohort effects and the relationship between associative norms and Pathfinder distances.

Main Results:

• Developmental differences in network structure representations were found between children and adults.
• These observed differences were not attributable to cohort effects.
• A relationship was identified between associative strength and network distances, further characterizing memory organization.

Conclusions:

• Significant developmental variations in memory structure representations for homographs exist.
• These differences in how semantic information is organized in memory likely contribute to the absence of semantic priming in children.
• The findings provide insights into the maturation of semantic memory and cognitive development.