Related Experiment Video
Updated: Mar 17, 2026
13:09
Using Brain Activation nir-HEG/Q-EEG and Execution Measures CPTs in a ADHD Assessment Protocol
Published on: April 1, 2018
11.1K
How can Continuous Performance Test help to assess inattention when mood and ADHD symptoms coexist?
Cintia Mesquita1, Bruno P Nazar2, Camilla M S Pinna1
1Department of Psychiatry and Mental Health, Federal University of Rio de Janeiro Institute of Psychiatry, Rio de Janeiro - Brazil.
Psychiatry Research
|July 20, 2016
Summary
Depression does not worsen attention deficits in individuals with ADHD. Attention deficits in mild to moderate depression are likely not caused by depression itself, aiding differential diagnosis.
Area of Science:
- Neuroscience
- Clinical Psychology
- Psychiatry
Background:
- Depression and attention-deficit/hyperactivity disorder (ADHD) are common and frequently comorbid disorders.
- Inattention, a shared symptom, complicates the differential diagnosis between depression and ADHD.
- The continuous performance test (CPT) is a standard clinical tool for assessing attention.
Purpose of the Study:
- To examine how depressive symptoms impact attention performance on the CPT.
- To determine if depressive symptoms influence the differential diagnosis of ADHD.
- To clarify the attribution of attention deficits in comorbid depression and ADHD.
Main Methods:
- Ninety-three college students (60 male, 33 female, mean age 24) were assessed.
- ADHD symptoms were evaluated using self-reports and semi-structured interviews.
- Depression severity was measured using the Beck Depression Inventory (BDI).
- Attention performance was quantified using CPT-derived measures (e.g., commission errors, omission errors, d prime).
Main Results:
- No significant correlation was found between depression and ADHD symptoms.
- Depressive symptom severity did not correlate with any CPT attention measures.
- ADHD symptomatology was the sole significant predictor of CPT performance variations.
- Depressive symptoms did not exacerbate ADHD-related impairments on the CPT.
Conclusions:
- The CPT's neuropsychological results are valuable for differentiating between depression and ADHD.
- Attention deficits observed in individuals with mild to moderate depression are unlikely to be caused by the depression itself.
- Findings support the utility of the CPT in distinguishing ADHD from depression, even in the presence of comorbid depressive symptoms.
