Technique for diagnosing attention deficit hyperactivity disorder using complimentary tests

A method for determining two threshold values used to determine whether an individual has Attention Deficit Hyperactivity Disorder (ADHD) comprising:

• providing a group of subjects a segment of which is known to have ADHD and a segment of which is known to be normal and not have ADHD;
• testing the group by:
• (a) sampling the peripheral skin temperature of left and right like extremities of each subject in the group during a predetermined time interval when they are in a sensory deprived state to provide respective left and right sampled peripheral skin temperature data;
• (b) a first processing of at least one of said left and right sampled peripheral skin temperature data providing conversion to the frequency domain to derive a first spectral signature having magnitude values;
• (c) a second processing of both left and right sampled peripheral skin temperature data to derive temporally correlated differential data;
• (d) said second processing further filtering said differential data with a high pass filter to produce filtered differential data with near d.c. components removed;
• (e) said second processing lastly providing conversion to the frequency domain of said filtered differential data to derive a second spectral signature having magnitude values;
• and
• (f) a third processing of said first and second spectral signatures for all of the subjects of the group to determine respective first and second threshold values which are complimentarily effective for determining whether or not an individual has ADHD when tested by said testing method.