Encoding operation and transcoding as the major loci of the frequency effect

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Neuroscience

Background:

• Frequency effects, where common words are processed faster than rare words, are a fundamental aspect of word recognition.
• Understanding the cognitive processes underlying these effects is crucial for models of reading and language.
• Previous research often struggled to disentangle different components of frequency effects across various tasks.

Purpose of the Study:

• To precisely locate and differentiate prelexical and postlexical frequency effects in word recognition.
• To investigate the role of decision processes in lexical decision tasks versus naming tasks.
• To develop a methodology applicable to alphabetic orthographies for analyzing frequency effects.

Main Methods:

• Utilized a lexical decision task (LDT) and two naming tasks: a regular naming task and a lexical naming task.
• Included Chinese characters and pseudocharacters in the tasks.
• Designed the lexical naming task to incorporate decision processes similar to LDT, unlike the regular naming task.

Main Results:

• Successfully isolated the decision component of the frequency effect in lexical decision.
• Demonstrated that the proposed methodology is not directly applicable to alphabetic orthographies due to sublexical influences.
• Enabled the estimation of both prelexical components in lexical decision and postlexical components in naming.

Conclusions:

• The study successfully differentiated prelexical and postlexical frequency effects in Chinese character processing.
• The findings highlight the importance of task design in isolating specific cognitive components of word recognition.
• The developed method offers insights into the architecture of the mental lexicon and reading processes.