Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @MHChat #mhchat Childhood experiences inform adult relationships. We have associative memories Not a question of ability to process #sadness
This tweet contains emotions: 
pessimism, sadness