Reliability, Error-related negativity, ERN, Error positivity, Pe, Generalizability
Psychometric studies of the ERN, CRN, Pe, and Pc ERPs are increasing. Coherent integration of these results is difficultwith classical test theory because the definition of error depends on the measure of reliability. This study usedgeneralizability theory, which extends the ideas of classical test theory, as a framework for evaluating the influence ofpsychopathology and number of trials on dependability of measurement. Participants included 34 people meeting criteriafor major depression, 29 meeting criteria for an anxiety disorder, and 319 controls. For all ERPs, within-person variancewas larger than between-person variance across groups, indicating many trials are needed for adequate dependability (atleast 13). Slightly fewer trials were needed to achieve adequate dependability in the control group than the pathologygroups. Regions of interest had higher dependability than single sensors.
BYU ScholarsArchive Citation
Baldwin, Scott A.; Larson, Michael J.; and Clayson, Peter E., "The dependability of electrophysiological measurements ofperformance monitoring in a clinical sample: A generalizability anddecision analysis of the ERN and Pe" (2015). Faculty Publications. 6068.
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