Social perception involves forming impressions of others based on available information such as physical appearance and verbal and non-verbal cues. Self-concept refers to how people judge and perceive themselves, which can be influenced by factors like parents, friends, and media. Attitudes are tendencies to evaluate people, objects, or ideas positively or negatively, and involve affective, behavioral, and cognitive components. The attribution process helps explain the causes of behaviors, which can be internal factors like work ethic or external factors like luck. Schemas are cognitive frameworks that help people understand the world, and can be adjusted through assimilation of new information into existing ideas or accommodation which replaces old ideas with new information.