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.