Poster D72, Monday, March 27, 8:00 – 10:00 am, Pacific Concourse
Individual Differences in Language Processing: A Hybrid ERP/SPR Investigation
Amalia Reyes1, Darren S. Tanner1; 1University of Illinois at Urbana-Champaign
It has been traditionally held that morphosyntactic manipulations elicit P600 ERP effects while semantic manipulations tend to elicit N400 effects. Some recent evidence has challenged this traditional dichotomy by finding that literate, monolingual English speakers varied considerably in the nature of their ERP responses to morphosyntactic violations in that they varied along a continuum between N400- and P600- dominant effects (Tanner & van Hell, 2014.) The causes of this variation are as of yet unknown. In eye tracking studies, however, reading speed has been shown to predict individual variation in the processing of syntactically complex sentences (Traxler et al., 2012.) Given that most ERP studies have used RSVP, it is plausible that individual ERP variation reflects the interaction between the presentation speed and individual reading speed. This study therefore investigates reading speed and reading environment as predictive factors of this individual variation. Using a concurrent ERP/self-paced reading methodology, we gathered EEG and reading speed data simultaneously in order to analyze the effect of reading speed on individual variation. Furthermore, by allowing participants to control their reading speed, we investigated whether this individual variation is affected by reading environment. Monolingual English speakers were presented with morphosyntactic agreement violations and were instructed to press a button to advance the sentence while EEG was being recorded. Results show similar patterns of individual differences observed with RSVP studies, suggesting that this individual variation reflects processing variation and is not a result of an artificial reading environment.
Topic Area: LANGUAGE: Other