@article{ref1,
title="Unsupervised categorization with individuals diagnosed as having moderate traumatic brain injury: over-selective responding",
journal="Brain injury",
year="2016",
author="Edwards, Darren J. and Wood, Rodger",
volume="30",
number="13-14",
pages="1576-1580",
abstract="PRIMARY OBJECTIVE: This study explored over-selectivity (executive dysfunction) using a standard unsupervised categorization task. Over-selectivity has been demonstrated using supervised categorization procedures (where training is given); however, little has been done in the way of unsupervised categorization (without training). <br><br>METHODS AND PROCEDURE: A standard unsupervised categorization task was used to assess levels of over-selectivity in a traumatic brain injury (TBI) population. Individuals with TBI were selected from the Tertiary Traumatic Brain Injury Clinic at Swansea University and were asked to categorize two-dimensional items (pictures on cards), into groups that they felt were most intuitive, and without any learning (feedback from experimenter). This was compared against categories made by a control group for the same task. OUTCOMES AND RESULTS: The findings of this study demonstrate that individuals with TBI had deficits for both easy and difficult categorization sets, as indicated by a larger amount of one-dimensional sorting compared to control participants. Deficits were significantly greater for the easy condition. <br><br>CONCLUSIONS: The implications of these findings are discussed in the context of over-selectivity, and the processes that underlie this deficit. Also, the implications for using this procedure as a screening measure for over-selectivity in TBI are discussed.<p /> <p>Language: en</p>",
language="en",
issn="0269-9052",
doi="10.1080/02699052.2016.1199899",
url="http://dx.doi.org/10.1080/02699052.2016.1199899"
}