sentences:  Effects of emotional biases can be similar to those of a cognitive bias, it can even be considered as a subcategory of such biases.The specificity is that the cause lies in one's desires or fears, which divert the attention of the person, more than in one's reasoning.Neuroscience experiments have shown how emotions and cognition, which are present in different areas of the human brain, interfere with each other in decision making process, resulting often in a primacy of emotions over reasoning
  
  Emotional bias might help explain the tendency towards over-optimism or over-pessimism, even when evidence for a more rational conclusion is available.