Which bias occurs when people assume that everyone agrees with their beliefs or actions?

The concept of projection bias refers to the tendency of individuals to project their own beliefs, feelings, or attitudes onto others, assuming that others share the same views or experiences. This can lead to a misperception of how widely a particular belief or behavior is held within a group or society. For example, if someone strongly believes in a particular political stance, they may overestimate the number of people who also support that stance, leading them to think that it is the prevailing opinion.

Projection bias can impact decision-making and interpersonal relationships, as individuals may fail to recognize diverse perspectives, potentially causing misunderstandings or conflicts. Recognizing this bias is important for fostering empathy and understanding within social interactions, reminding individuals to consider that their own perspective is just one of many.

The other biases listed do not specifically capture the assumption that others share one's beliefs or actions in the same way that projection bias does. Each of these biases focuses on different psychological phenomena, highlighting the importance of understanding projection bias in the context of social behavior and belief systems.