A perceptual ambiguity task was presented to thirty-six college , students (eighteen males and eighteen females). The task was conceived of as indexing a general cognitive trait, namely responding prematurely versus conservatively in an ambiguity situation. The point at which the Ss made their first response was used as an index of the degree to which they tended to structure ambiguous stimuli on the basis of inadequate information. The hypotheses that higher scores on the Paranoid, Anxiety, and Schizophrenia scales of the Minnesota Multiphasic Personality Inventory would be associated with a tendency to respond differentially to ambiguous stimuli were not supported. The lack of support for the Paranoid and Anxiety scales was not in agreement with earlier findings. In addition, no sex differences were found in tendencies to respond to the stimuli.