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Flynn effects on sub-factors of episodic and semantic memory: Parallel gains over time and the same set of determining factors
Umeå universitet.
Stockholm University, Faculty of Social Sciences, Department of Psychology. Stockholm Brain Institute, Stockholm, Sweden.
2009 (English)In: Neuropsychologia, ISSN 0028-3932, E-ISSN 1873-3514, Vol. 47, no 11, 2174-2180 p.Article in journal (Refereed) Published
Abstract [en]

The study examined the extent to which time-related gains in cognitive performance, so-called Flynn effects, generalize across sub-factors of episodic memory (recall and recognition) and semantic memory (knowledge and fluency). We conducted time-sequential analyses of data drawn from the Betula prospective cohort study, involving four age-matched samples (35–80 years; N = 2996) tested on the same battery of memory tasks on either of four occasions (1989, 1995, 1999, and 2004). The results demonstrate substantial time-related improvements on recall and recognition as well as on fluency and knowledge, with a trend of larger gains on semantic as compared with episodic memory [Rönnlund, M., & Nilsson, L. -G. (2008). The magnitude, generality, and determinants of Flynn effects on forms of declarative memory: Time-sequential analyses of data from a Swedish cohort study. Intelligence], but highly similar gains across the sub-factors. Finally, the association with markers of environmental change was similar, with evidence that historical increases in quantity of schooling was a main driving force behind the gains, both on the episodic and semantic sub-factors. The results obtained are discussed in terms of brain regions involved.

Place, publisher, year, edition, pages
Elsevier , 2009. Vol. 47, no 11, 2174-2180 p.
Keyword [en]
Flynn effects, episodic memory, semantic memory, cohort factors
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Research subject
URN: urn:nbn:se:su:diva-34795DOI: 10.1016/j.neuropsychologia.2008.11.007ISI: 000267839900004PubMedID: 19056409ScopusID: 2-s2.0-67349119196OAI: diva2:285638

The Betula Study is funded by the Bank of Sweden Tercentenary Foundation (1988-0082:17; J2001-0682), Swedish Council for Planning and Coordination of Research (D1988-0092, D1989-0115, D1990-0074, D1991-0258, D1992-0143, D1997-0756, D1997-1841, D1999-0739, B1999-474), Swedish Council for Research in the Humanities and Social Sciences (F377/1988-2000), the Swedish Council for Social Research (1988-1990: 88-0082, and 311/1991-2000), and the Swedish Research Council (345-2003-3883, 315-2004-6977). Also, we acknowledge the contribution by the staff in the Betula project.

Available from: 2010-01-12 Created: 2010-01-12 Last updated: 2015-09-01Bibliographically approved

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