Complete 6 pages APA formatted article: Physiology and Psychology of Emotion (article review). In their research, they sought to prove that there are preferences responsible for the modulation of the emphatic responses, consistent with the economic models of social preferences. Their experiment involved engaging 16 men and 16 women volunteers in the economic games, where two of the confederates played either fairly or unfairly towards the others (Singer et al 2006). According to the Perception Action Model of empathy, if one person observes another person in a particular emotional state, it automatically activates a representation of that state in the observer (Singer et al 2006). As such, whenever a person, consciously perceives the emotions of another person, they are likely to share in the same feelings as the person. Pain as a form of punishment experienced by an individual causes sharing of the emotions the party feels with observant parties. Thus, if an individual was to find another person in an emotional state, this automatically triggers his emotions, making him or her as emotional. Various processes within humans trigger emotional reactions in an individual (Singer et al 2006).