Will an intelligence test be accurate for someone with depression?

In general, whether the results of an intelligence test are reliable for patients with depression depends on the severity of the depression and whether the patient is in an acute episode. Specific analysis is as follows:

If depressive symptoms are mild and the patient is not in an acute phase, with no significant impairment in cognitive functions such as attention and memory, and if the individual can clearly understand testing instructions and cooperate fully during the assessment, the intelligence test results are typically reliable. In such cases, emotional disturbances have minimal impact on cognitive processes, allowing a true reflection of actual intellectual ability.

However, if the depression is in an acute phase or severe enough to cause noticeable difficulties—such as poor concentration, reduced memory, slowed thinking—and the patient cannot focus sufficiently to complete the test, the intelligence test results will not be reliable. Under these conditions, cognitive function is temporarily impaired, leading to potentially lower scores that do not accurately represent the person's true intellectual capacity.

Routine mental exercises, such as reading or playing simple brain-stimulating games, can help maintain cognitive function. Ensuring adequate sleep and avoiding late nights is important to prevent worsening mental fatigue. A diet rich in protein and vitamins provides essential nutritional support for brain health. When experiencing low mood, engaging in outdoor activities like walking and breathing fresh air can help regulate both mental and physical well-being, preparing the individual for potential evaluations.