Data from: Reference data for the Ruff Figural Fluency Test stratified by age and educational level

The Ruff Figural Fluency Test (RFFT) was developed to avoid the difficulties that were encountered in earlier tests of figural fluency. Although the test characteristics of the RFFT seem to be good and it is a valuable addition to neuropsychological assessments, reference data are still scarce. To this aim, we required 2,404 community dwelling persons in Groningen, The Netherlands to perform the RFFT. All 1,651 persons with a complete RFFT and known educational level formed the reference sample. Their age ranged from 35 to 82 years and their educational level from primary school to university grade. Ninety-six percent of the persons were of Western European descent. All tests were analyzed by two independent examiners and subsequently three measures were calculated: number of unique designs, number of perseverative errors and error ratio. The main finding was that performance on the RFFT was dependent on age and educational level. This was not only observed in older persons but also in young and middle-aged persons. Reference data for the three RFFT measures are presented in groups of five years of age ranging from 35-39 years to 75 years or older.鲁夫图形流畅性测验（全称Ruff Figural Fluency Test，简称RFFT）的开发初衷为规避早期图形流畅性测验中存在的各类缺陷。尽管该测验的心理测量学属性表现优良，且可作为神经心理学评估的有效补充工具，但相关参考数据仍较为匮乏。为此，我们招募了荷兰格罗宁根市的2404名社区居住人群参与该测验。其中，完成全部测验且具备明确受教育程度信息的1651名受试者构成了本次研究的参考样本。该样本的年龄跨度为35至82岁，受教育程度涵盖小学至大学阶段，其中96%的受试者为西欧血统。所有测验数据均由两名独立评分员开展分析，随后计算得到三项指标：独特设计数量、固着错误数量以及错误比率。本研究的核心发现为，鲁夫图形流畅性测验的作答表现受年龄与受教育程度的显著影响，这一关联不仅存在于老年人群，同样可见于青年及中年人群。针对上述三项测验指标，本研究按5年年龄组提供了参考数据，组别覆盖35~39岁至75岁及以上各年龄段。