Attitude change is when a person or group changes their views, values, or beliefs about a particular topic, issue, or object. This can happen as a result of new information, experiences, or influence from others. Attitudes are associated beliefs and behaviors towards some object. They are not stable, and because of the communication and behavior of other people, are subject to change by social influences, as well as by the individual's motivation to maintain cognitive consistency when cognitive dissonance occurs—when two attitudes or attitude and behavior conflict. Attitudes and attitude objects are functions of affective and cognitive components. It has been suggested that the inter-structural composition of an associative network can be altered by the activation of a single node. Thus, by activating an affective or emotional node, attitude change may be possible, though affective and cognitive components tend to be intertwined.Eagly, A., & Chaiken, S. (1995). Attitude strength, attitude structure and resistance to change. In R. Petty and J. Kosnik (Eds.), Attitude Strength. (pp. 413–432). Mahwah, NJ: Erlbaum.

Bases There are three bases for attitude change: compliance, identification, and internalization. These three processes represent the different levels of attitude change in response to accepting influence.

Compliance

Compliance refers to a change in behavior based on consequences, such as an individual's hopes to gain rewards or avoid punishment from another group or person. The individual does not necessarily experience changes in beliefs or evaluations of an attitude object, but rather is influenced by the social outcomes of adopting a change in behavior. For example, a child might outwardly agree with their parents' political party to avoid conflict or gain approval, even though they don't personally agree with or understand the party's values or policies. The individual is also often aware that he or she is being urged to respond in a certain way.

Compliance was demonstrated through a series of laboratory experiments known as the Asch experiments. Experiments led by Solomon Asch of Swarthmore College asked groups of students to participate in a "vision test". In reality, all but one of the participants were confederates of the experimenter, and the study was really about how the remaining student would react to the confederates' behavior. Participants were asked to pick, out of three line options, the line that is the same length as a sample and were asked to give the answer out loud. Unbeknown to the participants, Asch had placed a number of confederates to deliberately give the wrong answer before the participant. The results showed that 75% of responses were in line with majority influence and were the same answers the confederates picked.Asch, S. E. (1956). Studies of independence and conformity: A minority of one against a unanimous majority. Psychological Monographs, 70 (Whole no. 416). Variations in the experiments showed that compliance rates increased as the number of confederates increased, and the plateau was reached with around 15 confederates. The likelihood of compliance dropped with minority opposition, even if only one confederate gave the correct answer. The basis for compliance is founded on the fundamental idea that people want to be accurate and right.

Identification Identification explains one's change of beliefs and affect in order to be similar to someone one admires or likes. In this case, the individual adopts the new attitude, not due to the specific content of the attitude object, but because it is associated with the desired relationship. Identification also reflects a need to establish or maintain a meaningful, self-defining connection with another person or group, often by taking on their role or forming a reciprocal relationship. For example, children's attitudes on their political party affiliations are often adopted from their parents' attitudes and beliefs, not because the children have critically evaluated these ideas, but because doing so strengthens their bond with their parents and aligns with their identity within the family.

Internalization Internalization refers to the change in beliefs and affect when one finds the content of the attitude to be intrinsically rewarding, and thus leads to actual change in beliefs or evaluations of an attitude object. The new attitude or behaviour is consistent with the individual's value system, and tends to be merged with the individual's existing values and beliefs. Internalization occurs when the adopted behaviour aligns with the individual's value and fulfills their personal needs, making it deeply integrated into their value system. Using the same example, a child may grow up aligning with their parents' political party because over time, they come to genuinely agree with the party's values and policies, finding them consistent with their own developing belief system.

The expectancy-value theory is based on internalization of attitude change. This model states that the behaviour towards some object is a function of an individual's intent, which is a function of one's overall attitude towards the action. These attitudes are influenced by two key factors: the individual's expectation of success (how likely they believe they are to achieve the desired outcome) and the value they place on the outcome (how important or beneficial they perceive it to be). Together, these components explain how attitudes and motivations drive behaviour.

Emotion-based Emotion plays a major role in persuasion, social influence, and attitude change. Much of attitude research has emphasised the importance of affective or emotion components.Breckler, S. J., & Wiggins, E. C. (1992). On defining attitude and attitude theory: Once more with feeling. In A. R. Pratkanis, S. J. Breckler, & A. G. Greenwald (Eds.) Attitude Structure and Function (pp. 407–427). Hillsdale, NJ: Erlbaum. Emotion works hand-in-hand with the cognitive process, or the way we think, about an issue or situation. Emotional appeals are commonly found in advertising, health campaigns and political messages. Recent examples include no-smoking health campaigns (see tobacco advertising) and political campaigns emphasizing the fear of terrorism. Attitude change based on emotions can be seen vividly in serial killers who are faced with major stress.Davis, E. E. (1965). Attitude change: A review and bibliography of selected research. Paris: Unesco. There is considerable empirical support for the idea that emotions in the form of fear arousal,Leventhal, 1970Maddux & Rogers, 1980 empathy,Shelton & Rogers, 1981 or a positive moodJanis, Kaye, & Kirschner, 1965 can enhance attitude change under certain conditions.Leventhal, H. A. (1970) Findings and theory in the study of fear communications.In L. Berkowitz (Ed.), Advances in experimental social psychology (Vol. 5, pp. 120-186). Orlando, FL: Academic Press.

Important factors that influence the impact of emotional appeals include self-efficacy, attitude accessibility, issue involvement, and message/source features. Attitudes that are central to one's being are highly resistant to change while others that are less fixed may change with new experiences or information. A new attitude (e.g. to time-keeping or absenteeism or quality) may challenge existing beliefs or norms so creating a feeling of psychological discomfort known as cognitive dissonance. It is difficult to measure attitude change since attitudes may only be inferred and there might be significant divergence between those publicly declared and privately held. Self-efficacy is a perception of one's own human agency; in other words, it is the perception of our own ability to deal with a situation. It is an important variable in emotional appeal messages because it dictates a person's ability to deal with both the emotion and the situation. For example, if a person is not self-efficacious about their ability to impact the global environment, they are not likely to change their attitude or behaviour about global warming.

Affective forecasting, otherwise known as intuition or the prediction of emotion, also impacts attitude change. Research suggests that predicting emotions is an important component of decision making, in addition to the cognitive processes.Loewenstein, G. (2007). Affect regulation and affective forecasting. In Gross, J. J. (Ed.) Handbook of Emotion Regulation (pp. 180–203). New York: Guilford. How we feel about an outcome may override purely cognitive rationales. In terms of research methodology, the challenge for researchers is measuring emotion and subsequent impacts on attitude. Since we cannot see into the brain, various models and measurement tools have been constructed to obtain emotion and attitude information. Measures may include the use of physiological cues like facial expressions, vocal changes, and other body rate measures. For instance, fear is associated with raised eyebrows, increased heart rate and increased body tension. Other methods include concept or network mapping, and using primes or word cues.

Dual models: depth of processing Dual process models refer to theories that describe how people can process information quickly and automatically or slow and deliberately. Many dual process models are used to explain the affective (emotional) and cognitive processing and interpretations of messages, as well as the different depths of attitude change. These include the heuristic-systematic model of information processing and the elaboration likelihood model.

Heuristic-systematic model of information processing

The heuristic-systematic model of information processing describes two depths in the processing of attitude change, systematic processing and heuristic processing. In this modelChaiken, S., Liberman, A. & Eagly, A. H. (1989). Heuristic and systematic information processing within and beyond the persuasion context. In J. S. Uleman & J. A. Bargh. (Eds.), Unintended thought, pp. 212-252. New York: Guilford. information is either processed in a high-involvement and high-effort systematic way, or information is processed through shortcuts known as heuristics. For example, emotions are affect-based heuristics, in which feelings and gut-feeling reactions are often used as shortcuts.

Systematic processing Systematic processing occurs when individuals are motivated and have high cognition to process a message. Individuals using systematic processing are motivated to pay attention and have the cognitive ability to think deeply about a message; they are persuaded by the content of the message, such as the strength or logic of the argument. Motivation can be determined by many factors, such as how personally relevant the topic is, and cognitive ability can be determined by how knowledgeable an individual is on the message topic, or whether or not there is a distraction in the room. Individuals who receive a message through systematic processing usually internalize the message, resulting in a longer and more stable attitude change.

According to the heuristic-systematic model of information processing, people are motivated to use systematic processing when they want to achieve a "desired level of confidence" in their judgments. There are factors that have been found to increase the use of systematic processing; these factors are associated with either decreasing an individual's actual confidence or increasing an individual's perceived confidence. These factors may include framing persuasive messages in an unexpected manner; self-relevancy of the message.