Deriving semantic structure from category fluency: Clustering techniques and their pitfalls
نویسندگان
چکیده
منابع مشابه
Deriving semantic structure from category fluency: clustering techniques and their pitfalls.
Assessing verbal output in category fluency tasks provides a sensitive indicator of cortical dysfunction. The most common metrics are the overall number of words produced and the number of errors. Two main observations have been made about the structure of the output, first that there is a temporal component to it with words being generated in spurts, and second that the clustering pattern may ...
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On category-cued verbal fluency tasks, such as animal naming, respondents often report exemplars in semantically related clusters. We (Sung et al., 2012) used this tendency to elucidate sources of semantic dysfunction in adults with schizophrenia (SZ). Many patients with bipolar disorder (BD) show cognitive deficits that are similar to but milder than those seen in SZ. Whether this similarity e...
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This work expounds the notion that (structured) categories are syntax free presentations of type theories, and shows some of the ideas involved in deriving categorical semantics for given type theories. It is intended for someone who has some knowledge of category theory and type theory, but who does not fully understand some of the intimate connections between the two topics. We begin by showi...
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Semantic structure in schizophrenia as assessed by the category fluency test: effect of verbal intelligence and age of onset.
It has been reported that long-term memory function, including the semantic structure of category, is impaired in patients with schizophrenia. The present study was performed to determine: (1) whether the deficit in semantic structure in schizophrenia is independent of cultural backgrounds, and (2) the effect of age of onset and verbal intelligence on the degradation of semantic structure in th...
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ژورنال
عنوان ژورنال: Cortex
سال: 2014
ISSN: 0010-9452
DOI: 10.1016/j.cortex.2013.09.006