Peer Effects in Pro-Social Behavior: Social Norms or Social Preferences? (2013) indicated that, in addition to internal deliberation, the structuring of decisions among people can influence how a person acts individually. That social preferences and social norms are related, and function in line with wage-giving among three persons. The actions of the first person influenced [ clarification needed ] the wage-giving actions of the second person. That inequity aversion is the paramount concern of the participants. 
Many experiments designed to investigate memory have been criticized for having low ecological validity. First, the laboratory is an artificial situation. People are removed from their normal social settings and asked to take part in a psychological experiment. They are directed by an 'experimenter' and may be placed in the company of complete strangers. For many people, this is a brand new experience, far removed from their everyday lives. Will this setting affect their actions, will they behave normally?