Abstract: A method for determining a threshold value of a parameter used to determine whether an individual has Attention Deficit Hyperactivity Disorder (ADHD) comprising: providing a group of individuals a segment of which is known to have ADHD and a segment of which is known to be normal and not have ADHD; testing each individual in the group by sampling the peripheral skin temperature of the individual during a pre-determined time interval when the subject is in an inactive state to provide sampled peripheral skin temperature data, and analyzing the sampled peripheral skin data to produce a parameter value for that individual; and processing the individual parameter values for all of the members of the group to determine a threshold parameter value which is acceptable for determining whether or not an individual has ADHD when tested by said testing procedure.

Abstract: A method for determining the appropriate dosage of a medication to treat Attention Deficit Hyperactivity Disorder (ADHD) in an individual who has ADHD comprising: sampling the peripheral skin temperature of a human subject during a predetermined time interval when the subject is in an inactive state to provide sampled peripheral skin temperature data; analyzing the sampled peripheral skin temperature data for a pre-selected parameter to determine whether the pre-selected parameter has a value indicative of ADHD; and determining the proper dosage of a medication to treat ADHD based upon the determined value of the pre-selected parameter. At a time subsequent to administering the dosage, it is determined if a previously administered dosage of a medication is effective at removing the effects of ADHD as measured by this pre-selected parameter.

Abstract: A method for determining the appropriate dosage of a medication to treat Attention Deficit Hyperactivity Disorder (ADHD) in an individual who has ADHD. The method comprises sampling the peripheral skin temperature of left and right like extremities of an individual during a predetermined time interval when the individual is in a sensory deprived state to provide respective left and right sampled peripheral skin temperature data, processing the sampled peripheral skin temperature data; processing the sampled peripheral skin temperature data including filtering, differentiation, and conversion to the frequency domain to derive spectral signatures whose magnitudes are indicative of the level of ADHD manifestation. The effectiveness of the medication is calculated by comparison to predetermined threshold values.