On the Surplus Meanings of Numbers
When 40 Ss were required to select those primary digits most frequently associated with certain adjectives, there was substantial consensus in ascribing adjectives to particular digits. A factor analysis was performed based upon correlations between attributes assigned to the nine basic digits. This yielded a factor separating small from large numbers, and a second factor separating even from odd numbers. Both these factorial groupings were assigned distinctive adjectives to a significant degree.