A diagnostic method and apparatus facilitating a test for diagnosing attention deficit hyperactivity disorder (ADD/ADHD) in a person is disclosed, which in many embodiments includes a visual problem solving test involving distinctive feature analysis. It facilitates making objective observations of multiple components of attention and executive functioning. This test in some embodiments consists of a 24 individual test items with plates of geometric faces. The test requires the subjects to select two identical faces out a field of faces that progressively increase in number and complexity. The geometric faces could instead be graphic faces, stick figures, geometric shapes or other visual stimuli in other embodiments. Correct/incorrect scores and response times are compared to normative data and coupled with structured behavioral observations to provide objective evidence of the subject's attentional and executive functioning status.
APPARATUS AND METHOD OF CONDUCTING MEDICAL EVALUATION OF ADD/ADHD