Why do we choose or choose not to express our emotions: the way we interact with others is strongly influenced by our emotional state. Being disgusted, amused or frightened by someone would make us act differently towards them. In a recent study, researchers studying 1000 dyad conversations (between two people) found that a person"s social status affected what they laughed at, how frequency they laughed etc. 1000 people) the lower the level of grief typically expressed would be: also during this period, people were much more likely to display what we would consider. People learned manners at the dinner table as well as rules (like father sitting at the head of the table, children not speaking until spoken to), establishing a status hierarchy. In social interactions, there usually has to be an exchange taking place that both parties get something out of.