- A diffusion model account of criterion shifts in the lexical decision task
- Journal of Memory and Language
- Volume | Issue number
- 58 | 1
- Pages (from-to)
- Document type
- Faculty of Social and Behavioural Sciences (FMG)
- Psychology Research Institute (PsyRes)
Performance in the lexical decision task is highly dependent on decision criteria. These criteria can be influenced by speed versus accuracy instructions and word/nonword proportions. Experiment 1 showed that error responses speed up relative to correct responses under instructions to respond quickly. Experiment 2 showed that that responses to less probable stimuli are slower and less accurate than responses to more probable stimuli. The data from both experiments support the diffusion model for lexical decision (Ratcliff, Gomez, & McKoon, 2004). At the same time, the data provide evidence
against the popular deadline model for lexical decision. The deadline model assumes that "nonword" responses are given only after the "word" response has timed out - consequently, the deadline model cannot account for the data from experimental conditions in which "nonword" responses are systematically faster than "word" responses.
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