A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Birth cohort differences in cognitive performance in 75- and 80-year-olds : a comparison of two cohorts over 28 years (2021)


Munukka, Matti; Koivunen, Kaisa; von Bonsdorff, Mikaela B.; Sipilä, Sarianna; Portegijs, Erja; Ruoppila, Isto; Rantanen, Taina (2021). Birth cohort differences in cognitive performance in 75- and 80-year-olds : a comparison of two cohorts over 28 years. Aging Clinical and Experimental Research, 33 (1), 57-65. DOI: 10.1007/s40520-020-01702-0


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Munukka, Matti; Koivunen, Kaisa; von Bonsdorff, Mikaela B.; Sipilä, Sarianna; Portegijs, Erja; Ruoppila, Isto; Rantanen, Taina

Lehti tai sarja: Aging Clinical and Experimental Research

ISSN: 1594-0667

eISSN: 1720-8319

Julkaisuvuosi: 2021

Volyymi: 33

Lehden numero: 1

Artikkelin sivunumerot: 57-65

Kustantaja: Springer

Julkaisumaa: Italia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1007/s40520-020-01702-0

Avoin saatavuus: Hybridijulkaisukanavassa ilmestynyt avoin julkaisu

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/71799


Tiivistelmä

Objective
To evaluate cohort differences in cognitive performance in older men and women born and assessed 28 years apart.

Methods
Data in this study were drawn from two age-homogeneous cohorts measured in the same laboratory using the same standardized cognitive performance tests. Participants in the first cohort were born in 1910 and 1914 and assessed in 1989–1990 (Evergreen project, n = 500). Participants in the second cohort were born in 1938 or 1939 and 1942 or 1943 and assessed in 2017–2018 (Evergreen II, n = 724). Participants in both cohorts were assessed at age 75 and 80 years and were recruited from the population register. Cognitive performance was measured using the Digit Span test from the Wechsler Memory Scale (WMS), Digit Symbol test from the Wechsler Adult Intelligence Scale (WAIS) and phonemic Verbal Fluency test from the Schaie-Thurstone Adult Mental Abilities Test. Reaction time assessing motor and mental responses was measured with a simple finger movement task, followed by a complex finger movement task. T-tests were used to study cohort differences and linear regression models to study possible factors underlying differences.

Results
We found statistically significant cohort differences in all the cognitive performance tests, except for the digit span test and simple movement task in men, the later-born cohort performing better in all the measured outcomes.

Conclusions
The results of this study provide strong evidence that cognitive performance is better in more recent cohorts of older people compared to their counterparts measured 28 years earlier.


YSO-asiasanat: ikääntyminen; kognitiiviset prosessit; reaktiot; kohorttitutkimus

Vapaat asiasanat: cognitive performance; digit span test; digit symbol test; verbal fluency test; reaction time


Liittyvät organisaatiot


Hankkeet, joissa julkaisu on tehty


OKM-raportointi: Kyllä

Alustava JUFO-taso: 1


Viimeisin päivitys 2021-22-02 klo 12:59