It Runs in the Family: Testing for Longitudinal Family Flynn Effects

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dc.contributor.authorWänström, Linda
dc.contributor.authorO’Keefe, Patrick
dc.contributor.authorClouston, Sean A.P.
dc.contributor.authorMann, Frank D.
dc.contributor.authorMuniz-Terrera, Graciela
dc.contributor.authorVoll, Stacey
dc.contributor.authorZhang, Yun
dc.contributor.authorHofer, Scott M.
dc.contributor.authorRodgers, Joseph L.
dc.date.accessioned2023-09-28T05:46:00Z
dc.date.available2023-09-28T05:46:00Z
dc.date.copyright2023en_US
dc.date.issued2023
dc.description.abstractThe Flynn effect refers to increases over time in measured (particularly fluid) intelligence of approximately 3 IQ points per decade. We define the Flynn effect at the family level, using longitudinal data and two new family-level cohort definitions. Multilevel growth curve analyses of the National Longitudinal Survey of Youth 1979 data showed that children in families with later-born mothers had higher average PIAT math scores, and lower average reading comprehension scores and growth, in young and middle childhood. Children in families where the first child was born later had higher average PIAT math, reading recognition, and reading comprehension scores, as well as larger developmental growth. The latter family-level Flynn effects were of higher magnitudes than the usual individual-level Flynn effect found in previous studies. Our results, showing family level-intercept and slope Flynn effects for both maternal birthyear and first child birthyear, have implications for research aiming to explain the Flynn effect.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis research was funded by the National Institute on Aging under Grant R01 AG067621.en_US
dc.identifier.citationWänström, L., O’Keefe, P., Clouston, S., Mann, F. C., Muñiz‐Terrera, G., Voll, S., Zhang, Y., Hofer, S. M., & Rodgers, J. L. (2023). It runs in the family: testing for longitudinal family Flynn effects. Journal of Intelligence, 11(3), 50. https://doi.org/10.3390/jintelligence11030050en_US
dc.identifier.urihttps://doi.org/10.3390/jintelligence11030050
dc.identifier.urihttp://hdl.handle.net/1828/15451
dc.language.isoenen_US
dc.publisherJournal of Intelligenceen_US
dc.subjectfamily Flynn effect
dc.subjectIQ
dc.subjectintelligence
dc.subjectNLSY
dc.subjectmultilevel growth curve models
dc.subjectInstitute on Aging and Lifelong Health
dc.subject.departmentDepartment of Psychology
dc.titleIt Runs in the Family: Testing for Longitudinal Family Flynn Effectsen_US
dc.typeArticleen_US

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