Abstract
Participant heterogeneity induces spurious dependence that may obscure dependence patterns displayed by a covariance matrix. A parsimonious method is proposed for the reduction of this confounding effect. The method is applied to dichotomous behavioral response data of participants diagnosed with schizophrenia, as assessed by the Pragmatic Protocol (J. Speech Hear. Disord. 1987; 52:105-119).
Original language | English |
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Pages (from-to) | 2042-2053 |
Number of pages | 12 |
Journal | Statistics in Medicine |
Volume | 28 |
Issue number | 15 |
DOIs | |
State | Published - 10 Jul 2009 |
Keywords
- Covariance
- Pragmatics of language
- Schizophrenia
- Severity