| Nonlinear Dynamics, Psychology, and Life Sciences, Vol. 5, Iss. 3, Jul, 2001, pp. 223-265 @2001 Society for Chaos Theory in Psychology & Life Sciences Errors as Multistable Response Options Abstract: Five simulations mimicked benchmark phenomena of intact and dyslexic word naming. Initially, an iterative map was tuned to simulate the frequency consistency interaction in skilled naming. Subsequently, two model parameters were changed, in turn, to produce the regularization error of surface dyslexia (PINT pronounced to rhyme with /mint/), “absent” pseudoword (BINT) naming of phonological dyslexia (words are named correctly; pseudowords are not), the semantic error of deep dyslexia (BUSH named as /tree/), and a dissociation in picture naming of spoken versus written responses (the spoken response to a picture of a bush is /tree/, but the written response is BUSH). All errors, except “absent” pseudoword naming, were simulated as transcritical bifurcations. Keywords: nonlinear dynamics, multistability, acquired dyslexia, aphasic naming errors, double dissociation |