1. Apparatus for administering an attention performance test, comprising: storage means for storing a plurality of responses by a test subject to an attention performance test; a computing device having a memory; a color display coupled to said computing device for displaying a plurality of colored visual word targets and a plurality of colored visual response targets in response to said computing device; a test subject input device coupled to said processor to communicate a test subject response to said processor; and a computer program, for execution by the computing device, for administering an attention performance test, said computer program including: first means for presenting for a predetermined period of time a first predetermined visual word target on said color display to the test subject, a color of the word target being predetermined independently of the meaning of the word target, the word target being a word for a predetermined color, at least some of the meanings of the word targets respectively denoting a color other than the color in which the word target is displayed; second means for sequentially presenting, after the first means has presented the predetermined visual word target, for predetermined periods of time, a plurality of predetermined visual response targets on the display, at least one of said visual response targets having a color which matches the color of the last presented visual word target; third means for monitoring, during the sequential presentation by the second means of the predetermined visual response targets, the test subject input device; fourth means for recording on said memory means, during the sequential presentation by the second means of the predetermined visual work targets, any response input by the test subject, said first, second, third and fourth means, for each of a plurality of next visual word targets, respectively presenting the next visual word target, sequentially presenting a plurality of visual response targets, monitoring the test input device and recording responses; and fifth means for outputting at least to the storage means the recorded responses to the visual response targets.