School of Computing

Towards a competitive learning model of mirror effects in yes/no recognition memory tests

K. C. Dietz, H. Bowman, and J. C. van Hooff

In J. Mayor, N. Ruh, and K. Plunkett, editors, Connectionist models of behaviour and cognition II, number 18 in Progress in Neural Processing, pages 182-196. World Scientific: London, July 2008 Proceedings of the 11th Neural Computation and Psychology Workshop (NCPW11), University of Oxford, UK, 16-18 July 2008.

Abstract

Manipulations of encoding strength and stimulus class can lead to a simultaneous increase in hits and decrease in false alarms for a given condition in a yes/no recognition memory test. Based on signal detection theory, the strength-based `mirror effect' is thought to involve a shift in response criterion/threshold (Type I), whereas the stimulus class effect derives from a specific ordering of the memory strength signals for presented items (Type II). We implemented both suggested mechanisms in a simple, competitive feed-forward neural network model with a learning rule related to Bayesian inference. In a single-process approach to recognition, the underlying decision axis as well as the response criteria/thresholds were derived from network activation. Initial results replicated findings in the literature and are a first step towards a more neurally explicit model of mirror effects in recognition memory tests.

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Bibtex Record

@inproceedings{2923,
author = {Dietz, K. C. and Bowman, H. and {van~Hooff}, J. C.},
title = {Towards a competitive learning model of mirror effects in yes/no recognition memory tests},
month = {July},
year = {2008},
pages = {182-196},
keywords = {determinacy analysis, Craig interpolants},
note = {Proceedings of the 11th Neural Computation and Psychology Workshop (NCPW11), University of Oxford, UK, 16--18 July 2008},
doi = {},
url = {http://www.cs.kent.ac.uk/pubs/2008/2923},
    publication_type = {inproceedings},
    submission_id = {3957_1244721939},
    ISBN = {978-981-283-422-5},
    booktitle = {Connectionist models of behaviour and cognition II},
    editor = {Mayor, J. and Ruh, N. and Plunkett, K.},
    number = {18},
    series = {Progress in Neural Processing},
    publisher = {World Scientific: London},
    refereed = {Yes},
}

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