Flynn effects on sub-factors of episodic and semantic memory: Parallel gains over time and the same set of determining factors
2009 (English)In: Neuropsychologia, ISSN 0028-3932, E-ISSN 1873-3514, Vol. 47, 2174-2180 p.Article in journal (Refereed) Published
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 drawnfromthe 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 schoolingwas 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, 2174-2180 p.
Flynn effects, Episodic memory, Semantic memory, Cohort factors
IdentifiersURN: urn:nbn:se:umu:diva-23418DOI: 10.1016/j.neuropsychologia.2008.11.007OAI: oai:DiVA.org:umu-23418DiVA: diva2:223832