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Longitudinal Study of Performance on the Ruff Figural Fluency Test in Persons Aged 35 Years or Older

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  • Marlise E A van Eersel
  • Hanneke Joosten
  • Janneke Koerts
  • Ron T Gansevoort
  • Joris P J Slaets
  • Gerbrand J Izaks

Abstract

The Ruff Figural Fluency Test (RFFT) is a cognitive test to measure executive function. Longitudinal studies have shown that repeated testing improves performance on the RFFT. Such a practice effect may hinder the interpretation of test results in a clinical setting. Therefore, we investigated the longitudinal performance on the RFFT in persons aged 35–82 years. Performance on the RFFT was measured three times over an average follow-up period of six years in 2,515 participants of the Prevention of REnal and Vascular ENd-stage Disease (PREVEND) study in Groningen, the Netherlands: 53% men; mean age (SD), 53 (10) years. The effect of consecutive measurements on performance on the RFFT was investigated with linear multilevel regression models that also included age, gender, educational level and the interaction term consecutive measurement number x age as independent variables. It was found that the mean (SD) number of unique designs on the RFFT increased from 73 (26) at the first measurement to 79 (27) at the second measurement and to 83 (26) at the third measurement (p

Suggested Citation

  • Marlise E A van Eersel & Hanneke Joosten & Janneke Koerts & Ron T Gansevoort & Joris P J Slaets & Gerbrand J Izaks, 2015. "Longitudinal Study of Performance on the Ruff Figural Fluency Test in Persons Aged 35 Years or Older," PLOS ONE, Public Library of Science, vol. 10(3), pages 1-14, March.
    • Handle: RePEc:plo:pone00:0121411
    DOI: 10.1371/journal.pone.0121411
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    Cited by:

    1. David L Woods & John M Wyma & Timothy J Herron & E William Yund, 2016. "A Computerized Test of Design Fluency," PLOS ONE, Public Library of Science, vol. 11(5), pages 1-20, May.
    2. Scharfen, Jana & Peters, Judith Marie & Holling, Heinz, 2018. "Retest effects in cognitive ability tests: A meta-analysis," Intelligence, Elsevier, vol. 67(C), pages 44-66.

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