Data from: Longitudinal study of performance on the Ruff Figural Fluency Test in persons aged 35 years or older

Marlise E. A. Van Eersel, Hanneke Joosten, Janneke Koerts, Ron T. Gansevoort, Joris P. J. Slaets & Gerbrand J. Izaks
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...
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