Children's Color Trails Test 1 & 2: Test–Retest Reliability and Factorial Validity

This investigation examined the test–retest reliability and the factorial validity of the Children's Color Trails Test 1 & 2 (CCTT) using two distinct and independent studies and their respective research samples. The reliability of the CCTT was evaluated in a study with 6–12-year-old children (n = 54) strictly selected and diagnosed with attention-deficit/hyperactivity disorder from an interventional protocol using test–retest coefficients at 8- and 16-week time intervals. Factorial validity was investigated using groups of children with traumatic brain injury (TBI) (n = 137), children with other types of trauma than brain or head injury (Other Injury) (n = 132), and healthy controls (n = 114) from a protocol assessing the neuropsychological sequelae of traumatic brain injury. The results revealed completion time test–retest reliability in the moderate range, which may be considered modest (rtt =.46–.68) in this sample of children with ADHD. Interference reliability coefficients were greater and in the m...