Self-serving bias – the tendency to claim more responsibility for successes than failures. It may also manifest itself as a tendency for people to evaluate ambiguous information in a way beneficial to their interests (see also group-serving bias).

Self-fulfilling prophecy (also called "behavioral confirmation effect") – the tendency to engage in behaviors that elicit results which will (consciously or not) confirm existing attitudes.

System justification – the tendency to defend and bolster the status quo. Existing social, economic, and political arrangements tend to be preferred, and alternatives disparaged sometimes even at the expense of individual and collective self-interest. (See also status quo bias.)

False consensus effect – the tendency for people to overestimate the degree to which others agree with them.

Fundamental attribution error – the tendency for people to over-emphasize personality-based explanations for behaviors observed in others while under-emphasizing the role and power of situational influences on the same behavior (see also actor-observer bias, group attribution error, positivity effect, and negativity effect).

Halo effect – the tendency for a person's positive or negative traits to "spill over" from one area of their personality to another in others' perceptions of them (see also physical attractiveness stereotype).

Herd instinct – common tendency to adopt the opinions and follow the behaviors of the majority to feel safer and to avoid conflict.

Illusion of asymmetric insight – people perceive their knowledge of their peers to surpass their peers' knowledge of them.

Illusion of transparency – people overestimate others' ability to know them, and they also overestimate their ability to know others.