Regarding the symptoms of depression, a motivational symptom like the lack of desire to get out of bed is different from its companion behavioral symptom, such as:

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Motivational symptoms of depression, such as the lack of desire to get out of bed, are about the lack of motivation to engage in activities. The companion behavioral symptom, such as staying in bed all day (C), is the actual behavior that results from this lack of motivation.

Regarding the Symptoms of Depression, a Motivational Symptom Like the Lack