First Impressions Theory suggests that people form quick judgments about others based on initial encounters. These judgments can be influenced by various factors, including physical appearance, body language, and tone of voice. Research indicates that first impressions are often lasting and can significantly affect interpersonal relationships and social interactions. The theory highlights the importance of nonverbal cues, such as facial expressions and posture, in shaping perceptions. Once a first impression is made, it can be challenging to change, as individuals may unconsciously seek information that confirms their initial beliefs about a person.