Does executive functioning (EF) predict depression in clinic-referred adults? EF tests vs. rating scales

Area of Science:

• Neuroscience
• Psychiatry
• Psychology

Background:

• Executive functioning (EF) deficits are linked to depression theories and Attention-deficit/hyperactivity disorder (ADHD).
• Adults with ADHD have an increased risk for depressive disorders.
• The ecological validity of laboratory EF measures is debated.

Purpose of the Study:

• To investigate the relationship between depression diagnoses/symptoms and EF.
• To compare EF as measured by rating scales versus tests.
• To examine these relationships in adults referred for adult ADHD evaluation.

Main Methods:

• Analysis of data from adults with ADHD (N=146) and a clinical control group (N=97).
• EF assessed using a rating scale for daily life deficits and a battery of EF tests.
• Depression assessed via SCID diagnoses (major depression, dysthymia) and self-report symptom ratings.

Main Results:

• EF, as measured by rating scales, predicted depression across measures, controlling for anxiety and impairment.
• Self-Management to Time, Self-Organization, and Problem-Solving showed the strongest EF-depression links.
• EF tests showed weak and inconsistent relationships with depression measures.

Conclusions:

• Everyday EF problems are significant predictors of depression.
• Consistent assessment for ADHD-depression comorbidity is recommended for researchers and clinicians.
• Clinicians should consider strategies addressing EF deficits in depression treatment.