Height-width proportion and stroke width in numeral visibility

Abstract

Each of 12 groups of 6 Ss viewed under tachistoscopic exposure numerals in one of 12 possible combinations of 4 height-width proportions and 3 stroke widths. "1. Height-width proportion was a source of variation in visibility significant beyond the 1% level for five numerals, and beyond the 5% level for a sixth. 2. Stroke width was a significant source of variation for only one numeral. 3. The most visible combination… for all numerals is a height-width ratio of 10:7.5 and a stroke width to height ratio of 1:10." (PsycInfo Database Record (c) 2025 APA, all rights reserved)