The Effects of ‘Does Not Apply’ on Measurement of Temperament with the Infant Behavior Questionnaire-Revised: A Cautionary Tale for Very Young Infants

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dc.contributor.authorGiesbrecht, Gerald
dc.contributor.authorDewey, Deborah
dc.contributor.authorAPrON Study Team
dc.date.accessioned2016-01-04T20:32:31Z
dc.date.available2016-01-04T20:32:31Z
dc.date.issued2014-10
dc.descriptionAuthor's accepted manuscript deposited according to Elsevier sharing policies http://www.elsevier.com/about/company-information/policies/policy-faq November 18, 2015en_US
dc.description.abstractBackground: The Infant Behavior Questionnaire-Revised (IBQ-R) is a widely used parent report measure of infant temperament. Items marked 'does not apply' (NA) are treated as missing data when calculating scale scores, but the effect of this practice on assessment of infant temperament has not been reported. Aims: To determine the effect of NA responses on assessment of infant temperament and to evaluate the remedy offered by several missing data strategies. Study design: A prospective, community-based longitudinal cohort study. Subjects: 401 infants who were born >37 weeks of gestation. Outcome measures: Mothers completed the short form of the IBQ-R when infants were 3-months and 6-months of age. Results: The rate of NA responses at the 3-month assessment was three times as high (22%) as the rate at six months (7%). Internal consistency was appreciably reduced and scale means were inflated in the presence of NA responses, especially at 3-months. The total number of NA items endorsed by individual parents was associated with infant age and parity. None of the missing data strategies completely eliminated problems related to NA responses but the Expectation Maximization algorithm greatly reduced these problems. Conclusions: The findings suggest that researchers should exercise caution when interpreting results obtained from infants at 3 months of age. Careful selection of scales, selecting a full length version of the IBQ-R, and use of a modern missing data technique may help to maintain the quality of data obtained from very young infants.en_US
dc.description.refereedYesen_US
dc.description.sponsorshipThis research was supported in part by grants from Alberta Innovates Health Solutions and the Alberta Children’s Hospital Foundation.en_US
dc.identifier.citationGiesbrecht, G.F., & Dewey D. (2014). The effects of ‘does not apply’ on measurement of temperament with the Infant Behavior Questionnaire-Revised: A cautionary tale for very young infants. Early Human Development, 90(10; October), 627-634.en_US
dc.identifier.doi10.1016/j.earlhumdev.2014.08.003
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/33671
dc.identifier.urihttp://hdl.handle.net/1880/51040
dc.language.isoenen_US
dc.publisherEarly Human Developmenten_US
dc.publisher.corporateUniversity of Calgary
dc.publisher.departmentDepartment of Paediatricsen_US
dc.publisher.facultyMedicineen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.publisher.urlhttp://www.journals.elsevier.com/early-human-development/en_US
dc.rightsAttribution Non-Commercial No Derivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectInfant Behavior Questionnaire—Reviseden_US
dc.subjectInfant temperamenten_US
dc.subjectMissing dataen_US
dc.subjectScoring procedureen_US
dc.titleThe Effects of ‘Does Not Apply’ on Measurement of Temperament with the Infant Behavior Questionnaire-Revised: A Cautionary Tale for Very Young Infantsen_US
dc.typejournal article
thesis.degree.disciplinePaediatrics
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