Visual spatial perception and surgical competence

Background: Proficiency in visual spatial perception (VSP) is a hypothetical component of surgical competence. Methods: Four tests of VSP, taken from the Cognitive Laterality Battery (CLB), were administered to 301 surgeons and surgical residents. Mean scores on each test were compared by Student t tests to those of the normative sample (n = 251) on which the test was originally standardized. Results: Mean scores on two of the tests (Orientation, Touching Blocks) were significantly greater (P <0.01) for the study sample than for the normative sample, while mean scores on the other two subtests (Form Completion, Localization) were not. Conclusions: Surgeons tend to outperform the general population on tests of high-level VSP abilities (ie, envisioning depth and mentally manipulating two-dimensional representations of three-dimensional structures) identified previously as correlates of surgical skill acquisition. VSP proficiency is a valid component of surgical competence that should perhaps be included in career selection discussions with medical students and in assessment of the competence of surgeons.