Speed estimation. The results of the speed estimation show similar results compared to the accuracy estimation with no obvious tendency. Seven participants rated the small text size best, whilst eight rated it third. The large size was rated five times first, five times second and six times third. For the medium size, 10 participants thought to be second best with this text size. A nonparametric Friedmann test shows that the participants’ rating of their own speed also was not affected significantly by text size (p > .05).