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Reference data for the Ruff Figural Fluency Test stratified by age and educational level.
Gerbrand J Izaks1, Hanneke Joosten, Janneke Koerts
1University Center for Geriatric Medicine, University Medical Center Groningen, Groningen, The Netherlands. g.j.izaks@int.umcg.nl
Plos One
|February 25, 2011
Summary
The Ruff Figural Fluency Test (RFFT) shows performance varies with age and education. This study provides essential reference data for this valuable neuropsychological assessment tool.
Area of Science:
- Neuropsychology
- Cognitive Assessment
- Psychometrics
Background:
- The Ruff Figural Fluency Test (RFFT) is a valuable neuropsychological assessment tool.
- Existing reference data for the RFFT is limited.
- Earlier figural fluency tests presented several difficulties.
Purpose of the Study:
- To establish comprehensive reference data for the RFFT.
- To investigate the influence of age and education on RFFT performance.
- To enhance the utility of the RFFT in clinical and research settings.
Main Methods:
- A sample of 1,651 community-dwelling adults (aged 35-82) in The Netherlands completed the RFFT.
- Participants had varying educational backgrounds, from primary school to university.
- Data analysis included calculating unique designs, perseverative errors, and error ratio, with independent examiner verification.
Main Results:
- RFFT performance was significantly influenced by both age and educational level across all age groups.
- Reference data for unique designs, perseverative errors, and error ratio were generated.
- Age-specific reference data were provided in 5-year intervals from 35-39 to 75+ years.
Conclusions:
- Age and education are critical factors affecting RFFT performance.
- The established reference data are crucial for accurate interpretation of RFFT results.
- This study significantly contributes to the normative understanding of the RFFT.
