Modelling the role of Hanja in the Korean mental lexicon: A second tier of spreading activation

This poster presents interim results from an ACT-R-based statistical model of a series of lexical decision experiments in Korean. The model uses two tiers of spreading activation, one of which represents semantic distance, and the other of which represents the effect of the Hanja writing system on the mental lexicon. Modelling the data requires assumptions to be made about the relationship between the tiers of spreading activation, and about the method of computing semantic association. The poster is supported by an interactive browser interface that allows participants to vary these assumptions, as well as the standard ACT-R spreading activation parameters, and explore how this impacts the model fit.