Self-efficacy is not a component of self-concept, but rather a belief in one's ability to perform a specific task or achieve a particular goal.

In-group bias refers to the tendency to favor one's own group over other groups, often leading to positive evaluations of the in-group and negative evaluations of the out-group.

Personal identity is not a type of social identity, as it refers to the unique characteristics and experiences that define an individual, rather than their membership in a particular social group.

Socialization is the process by which individuals learn and internalize the values, beliefs, and behaviors of the social groups they belong to, shaping their thoughts, feelings, and actions.

Genetics is not a direct factor that influences self-concept, as it primarily determines physical traits and predispositions, rather than psychological characteristics.

Stereotyping refers to the tendency to attribute certain characteristics to members of a group based on their perceived group membership, often leading to inaccurate and overgeneralized beliefs.

Ethnocentrism is the belief that one's own culture or group is superior to others, often leading to negative attitudes and behaviors towards members of other groups.

Positive intergroup contact is not a strategy for reducing prejudice and discrimination, but rather a condition that can facilitate positive attitudes and behaviors towards out-group members.

Self-enhancement refers to the tendency to maintain a positive self-image by seeking favorable information about oneself, avoiding negative information, and engaging in self-promoting behaviors.

Self-awareness is not a type of self-presentation, as it refers to the ability to recognize and understand one's own thoughts, feelings, and behaviors.

Social influence refers to the process by which individuals' thoughts, feelings, and behaviors are affected by others, leading to conformity, obedience, or other forms of influence.

Strong leadership is not a factor that contributes to groupthink, as it can actually help to prevent groupthink by encouraging critical thinking and challenging assumptions.

Social loafing refers to the tendency for individuals to exert less effort when working in a group compared to working alone, due to diffusion of responsibility and reduced individual accountability.

Self-perception is not a type of social cognition, as it refers to the process by which individuals infer their own attitudes and beliefs based on their own behavior.

Self-serving bias refers to the tendency to attribute one's successes to internal factors (e.g., skill, effort) and one's failures to external factors (e.g., bad luck, difficult circumstances).