Frequency and predictability effects in the Dundee Corpus: an eye movement analysis.

Area of Science:

• Cognitive Psychology
• Computational Linguistics
• Neuroscience

Background:

• Theories of reading and visual word recognition are debated.
• Previous research yielded conflicting evidence on word properties' influence on processing time.

Purpose of the Study:

• To investigate the influence of word frequency and predictability on reading.
• To examine parafoveal and word class effects on foveal processing.
• To test the distributed parallel processing hypothesis.

Main Methods:

• Analysis of a large corpus of eye movement data during reading.
• Statistical examination of the impact of word properties (frequency, predictability, word class) on fixation durations and spans.

Main Results:

• No evidence for early interactive effects of word frequency and predictability on inspection time.
• Limited evidence for spillover effects from prior words on current processing.
• Parafoveal word frequency and predictability significantly influence foveal processing, with higher predictability leading to longer foveal fixations.
• Word class information modulates processing across word boundaries.

Conclusions:

• Reading involves parallel processing of visual information.
• Parafoveal preview effects are significant, particularly predictability.
• Syntactic information (word class) influences reading beyond the currently fixated word.