Hauptman A, Eliot J
Percept Mot Skills. 1986 Aug;63(1):187-90. doi: 10.2466/pms.1986.63.1.187.
348 adolescents, 176 male and 172 female, were administered six different spatial tests. Awareness of figural proportion, figural memory, and figure-ground perception contributed significantly to performance on spatial visualization tests but not to performance on spatial orientation tests. Similarly, severity of hearing loss was correlated with scores on visualization tests but not on spatial-orientation tests.