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dc.contributor.authorFahrenberg, Jochen
dc.contributor.authorFoerster, Friedrich
dc.contributor.authorMelcher, Franck
dc.date.accessioned2009-12-21
dc.date.accessioned2015-12-01T10:30:47Z-
dc.date.available2009-12-21
dc.date.available2015-12-01T10:30:47Z-
dc.date.issued1995
dc.identifier.otherurn:nbn:de:bsz:291-psydok-25523-
dc.identifier.urihttp://hdl.handle.net/20.500.11780/630-
dc.description.abstractIdeally, response scores that are derived to assess individual differences in responsiveness should be independent of the researcher's subjective preferences for any specific baseline condition, for instance, resting (pre-task) values or night-time baselines. A methodological investigation was designed to evaluate three issues: namely, baseline bias, initial-value dependency bias, and response score bias. 51 hypertensive patients participated in three 24-hour periods of psychophysiological monitoring. The monitoring consisted of measurements taken during rest periods and tasks in the laboratory, as well as measurements during daytime activities and during night-time. The assessment included the cold pressor test, mental load, active relaxation, and stair climbing as a physically demanding task. Blood pressure and heart rate were employed in exploring specific methods of response scaling. The findings indicated that the assessment of individual differences in responsiveness, i.e. rank ordering of subjects, was biased substantially. (1) Inconsistencies exist between response scores that were derived by relating task level to night-time baselines, rather than to resting baseline in the laboratory. This deviation was obvious for task-baseline differences but less evident for residualized change scores and true scores. (2) Positive initial-value dependency for BP and HR, i.e. association of higher baseline and higher response magnitude, was found when resting baselines were used. However, negative initial-value dependency was found in several instances when night-time baselines were employed. (3) Inconsistencies were also evident among various methods of response scaling, whereby a discordance seems to exist between the simple difference, on the one hand, and residualized change score and true score models, on the other. A strategy of response scaling is suggested that disregards simple difference scores and employs (1) a residualized change score to represent incremental change and (2) a design-specific true score model that allows for both a test of initial-value dependency and an estimation of true difference. Baseline bias, initial-value dependency bias, and response score bias may be responsible for some of the inconsistencies in outcomes of psychophysiological research.en
dc.language.isoen
dc.relation.ispartofseriesForschungsberichte des Psychologischen Instituts der Albert-Ludwigs-Universität Freiburg im Breisgau;121
dc.rightspubl-ohne-podde
dc.rights.urihttp://psydok.sulb.uni-saarland.de/doku/lic_ohne_pod.phpde
dc.subject.classificationBlutdruckde
dc.subject.classificationHerzfrequenzde
dc.subject.classificationGrundfrequenzde
dc.subject.classificationHypertoniede
ubs.subject.ddc150
dc.subject.otherReaktions-Biasde
dc.subject.otherKardiovaskuläre Reaktivitätde
dc.subject.otherHypertoniede
dc.subject.otherReaktionsparameterde
dc.subject.otherBlutdruckde
dc.subject.otherHerzfrequenzde
dc.subject.otherPsychophysiologiede
dc.subject.otherBaselineen
dc.subject.otherBlood pressureen
dc.subject.otherHeart rateen
dc.subject.otherLaw of initial valuesen
dc.subject.otherResponse scalingen
dc.titleResponse Scaling: Night-time Baselines, Resting Baselines, and Initial Value Dependenciesen
dc.typeReport (Bericht)
dc.date.updated2014-03-13
ubs.publikation.typreport
ubs.institutUniversität Freiburg: Institut für Psychologie
ubs.fakultaetPsychologie: Hochschulen Deutschland
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