Emotion
Emotion, as the psychological process that offer us directions in this world and prepares us to act, altering the core of the concept. Emotions help us to set priorities in our lives, taking initiatives in changing in many situations or making decisions based on how we feel, whether we are sad, happy, angry, frustrated. Emotions influence attention, perception, memory, reasoning, and decisions. As the emotions tend to linger, being exposed to an emotional condition bored motivates many people to seek social contact (e.g. Fitness, 2000; Gable, Gonzage, & Strachman, 2006). In Gardner and Hill's (1988) study, the subjects in positive emotion preferred an experiential decision strategy compared to subjects in negative emotion who preferred an informational decision strategy. It could be that those in positive mood were prone to "act on hunch", while those subjects in negative emotion used information strategy because such strategy, if undertaken carefully, has higher chance of success which in turn changes the mood from negative to positive. Being able to judge a stimulus to be "good" or "bad" and responding with the appropriate approach/withdrawal behaviors to acquire or avoid the stimuli in question would be beneficial for survival (Robinson et al., 2004).