CTT

Features and benefits

• Numbered circles are printed with vivid pink or yellow backgrounds that are perceptible to color-blind individuals. For Part 1, the respondent uses a pencil to rapidly connect circles numbered 1-25 in sequence. For Part 2, the respondent rapidly connects numbered circles in sequence, but alternates between pink and yellow.
• The length of time to complete each trial is recorded, along with qualitative features of performance indicative of brain dysfunction, such as near-misses, prompts, number sequence errors, and color sequence errors.
• Retains the sensitivity and specificity of the original Trail Making Test but substitutes color for letters, making it more suitable in cross-cultural and special needs contexts.
• Instructions may be presented either verbally or with visual cues.
• The validity of the CTT has been documented in a variety of clinical and neuropsychological populations.

Note. Stopwatch is required for administration. Form A is the standard test form on which normative data were collected and that should be used for clinical evaluation. Forms B, C, and D should be used for research.