The aim of the present study was to further investigate the properties of a "quantitative" factor previously identified in the "diagrams, tables and maps" subtest of SweSAT. The analyses were carried out with a structural equation modelling technique on the spring 1991 version of SweSAT with 19-year-old test takers and were replicated on four ensuing versions of the test (n =14,431-19,597). The "quantitative" factor was successfully separated from the analytic, problem-solving dimension with regard to the first test, whereas the results of replications were somewhat less clear-cut.