A recent study was conducted to find out if people with clinical depression were able to differentiate negative emotions just like normal people?
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However, this was not the case with positive emotions.
"Our results suggest that being specific about your negative emotions might be good for you. It might be best to avoid thinking that you are feeling generally bad or unpleasant. Be specific. Is it anger, shame, guilt or some other emotion? This can help you circumvent it and improve your life. It is one of our overarching goals to investigate approaches for facilitating this kind of emotional intelligence at a large scale in the population," researchers said.
Source-Medindia