Interpretation of the Quotient ADHD Test Report

The Quotient® ADHD System accurately measures motion and analyzes shifts in attention state to give a clear picture of the core symptom areas of ADHD. The software calculates results based on 19 or more parameters that combine to give greater than 90% accuracy in identifying ADHD.

The report is divided into 4 major sections:

  1. Motion Analysis
  2. Attention Analysis
  3. Shift in Attention State
  4. Quotient Composite Scores

This page compares results of a boy with ADHD symptoms with a boy in the same age category without ADHD symptoms.

The Quotient ADHD Test report should be interpreted only by qualified professionals.

Billy, age 9 years 6 months, grade 3. No medication. James, age 9 years 2 months, grade 3. No medication.
Motion Analysis
Research indicates that motion is one of the key indicators of hyperactivity. The Quotient® ADHD System uses the Motion Tracking System to measure movement 50 times per second. Motion greater than 1 millimeter is counted and plotted in 5 minute segments. The graphics and the data tables clearly show significant differences between children with and without hyperactivity. 
Head Motion Head Motion
Head Motion - Billy Head Motion - James
Motion Results Motion Results
Measure Result Ref. Range Age Percentile
Immobility Duration 53 ms 91-309 ms 1t
# Movements 5880 926-3103 1t
Total Displacement 13.26 m 1.22-4.47 m 1t
Area 558 cm2 24-118 cm2 1t
Spatial Complexity 1.032 1.099-1.315 1t
Temporal Scaling 0.988 0.375-0.820 3t
Measure Result Ref. Range Age Percentile
Immobility Duration 1617 ms 91-309 ms 99
# Movements 200 926-3103 99
Total Displacement 0.22 m 1.22-4.47 m 99
Area 5 cm2 24-118 cm2 99
Spatial Complexity 1.800 1.099-1.315 99
Temporal Scaling 0.006 0.375-0.820 99
The table shows that Billy sat still an average of 53 milliseconds, which is in the 1st percentile for his age and gender cohort. He also had more movements with greater total path and area. His spatial complexity and temporal scaling metrics are outside of the normal range. All of the motion parameters are flagged as the 16th percentile or lower. James shows a typical motion pattern for a boy without ADHD symptoms. The motion area is minimal and the motion path is tight. The table shows that his results are at the upper end of the reference range on all of the motion parameters.
Attention Analysis
The attention analysis section of the report plots incorrect and correct hits and passes on a time scale. Patients with attention problems tend to make a lot of mistakes and the time of response tends to be more variable than people without attention problems. People with good attention tend to get into a rhythm and the graph shows a fairly tight distribution around the mean response time.
Key: + designates a target. X designates a non-target.  
+ Omission errors: incorrect passes. (Measures inattention.)
X Commission errors: incorrect hits. (Measures impulsivity.) 		+ Correct hits
X Correct passes
   
Incorrect Responses Incorrect Responses
   
Correct Responses Correct Responses
Response Results Response Results
Measure Result Ref. Range Age Percentile
Accuracy 66.6% 672.0-95.8% 11t
Omission errors 20.4% 0.4-13.8% 11t
Commission errors 46.4% 7.7-45.7% 14t
Latency 471 ms N/A N/A
Variability 260 ms 89-183 ms 6t
COV (Normalized response time) 55 20.0-38.0 7t
Measure Result Ref. Range Age Percentile
Accuracy 95.8% 672.0-95.8% 84
Omission errors 0.4% 0.4-13.8% 86
Commission errors 7.9% 7.7-45.7% 83
Latency 405 ms N/A N/A
Variability 72 ms 89-183 ms 96
COV (Normalized response time) 17 20.0-38.0 93
Accuracy of responses was 66.6% (300 correct responses out of 450 stimuli), with 20.4% incorrect passes (omission errors) and 46.4% incorrect hits (commission errors). These results indicate a problem with inattention and impulsivity, with omission and commission errors falling below the 16th percentile. The graphs show loose scatter, which is reflected in the variability and normalized response times in the table, with results falling in the 6th and 7th percentiles, respectively, compared to his age and gender cohort. Patients who have good attention score high on the accuracy metric and commit few commission and omission errors.
Attention State Summary
The Quotient® ADHD System analyzes 30 x 30-second blocks of data for the 15-minute test for children under 13 years old. The report summarizes the information on the attention state chart. It is easy to see how much time the patient is attentive/on task vs. impulsive vs. distracted vs. disengaged from the task.
Attention State Analysis for 30 Second Segments Attention State Analysis for 30 Second Segments
   
Measure Result Ref. Range Age Percentile
# Shifts 20 5-17 12t
Attentive 10.0% 10.0-90.0% 14t
Impulsive 20.0% 6.7-53.3% 63
Distracted 20.0% 0-16.7% 11t
DISENGAGED      
Random 46.7% 0-20.0% 6t
Minimal 3.3% 0-3.3% 18t
Contrary 0.0% 0-0.0% 99
Measure Result Ref. Range Age Percentile
# Shifts 8 5-17 79
Attentive 83.0% 10.0-90.0% 78
Impulsive 16.7% 6.7-53.3% 69
Distracted 0.0% 0-16.7% 99
DISENGAGED      
Random 0.0% 0-20.0% 99
Minimal 0.0% 0-3.3% 99
Contrary 0.0% 0-0% 99
Thirty x 30-second blocks of data are summarized on the attention state chart. For the first 30 seconds, this child showed disengaged/random behavior, followed by 30 seconds impulsive, followed by 60 of impusivity, and so on. The table shows that he had 20 attention shifts. He was on task 10%, impulsive 20%, distracted 20% and disengaged 50% of the time, mostly randomly hitting the space bar. Patients without ADHD tend to stay on task for the duration of the test. James 8 attention shifts, with 5 of 30 (16.7%) of the 30-second segments in the impulsive state.
Composite Scores
  Billy
ADHD		 James
non-ADHD		  
System Index Likely Unlikely

The System Index integrates the motion and attention indices to summarize the probability of an ADHD diagnosis for an unmedicated patient, or the degree of agreement between the patient’s results and the database of Quotient® ADHD Test results obtained from subjects with ADHD.

The Scaled Scores are normalized calculations on a 10-point scale. Higher Scaled Scores indicate deficit in control of motion and attention compared to age and gender matched subjects. The Global Scaled Score is an average of the motion and attention scores.
Scaled Scores    
Motion Scaled Score 9.53 1.76
Attention Scaled Score 8.97 2.87
Global Scaled Score 9.25 2.32
KEY        
System Index Unlikely Possible Probable Likely
Scaled Scores 0.00-2.50 2.51-5.00 5.01-7.50 7.51-10.00

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