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Effects of damage to the CDM Stroop model

Lookup NU author(s): Dr Jennifer Hallinan


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We report simulations of Cohen, Dunbar and McClelland's (CDM) model of the Stroop effect showing how damage to the network can replicate empirical data on older individuals and those with dementia of the Alzheimer's type (DAT). The study is significant on three counts: firstly, the specific patterns of damage required are theoretically justifiable, leading to a deeper understanding of the role of connectionist models in understanding DAT; secondly, the simulations show that in specific neurodegenerative conditions, the CDM model can replicate behavioral effects, providing increased confidence in the model and countering recently published claims to the contrary; and thirdly, a new component of the model, the preliminary time constant, is identified as a major factor in the ability of our damaged model to successfully replicate empirical data, indicating a potential role for deficits in attention to task instructions.

Publication metadata

Author(s): Wiles J, Chenery H, Hallinan J, Blair A, Naumann D

Editor(s): Wales, R.J., Van Gelder, T., Davis, C.

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Cognitive Science in Australia: Proceedings of the Fifth Biennial Conference of the Australasian Cognitive Science Society

Year of Conference: 2000

Pages: 22-29

Publisher: Causal Productions

Library holdings: Search Newcastle University Library for this item

ISBN: 1876346264