Your mood swings may give you an evolutionary advantage

We already know that mood affects the way we judge and perceive things -- and it's generally considered to be negative. Studies have found that bad or sad moods can affect our judgement and reasoning, with clinical depression even having an impact on perception of time. But a new study suggests that mood, and extreme changes in mood, may actually be "an evolutionary relic that may have been advantageous for early humans". By: Emily Reynolds, Continue reading..