Which psychological concept is most active in these impression-critical situations?

The false consensus effect is a cognitive bias whereby individuals overestimate the extent to which their beliefs or behaviors are typical of others. While it can influence how we perceive others, it does not directly relate to the active management of impressions in interpersonal situations like Dr. Arden's practice.

Cognitive dissonance occurs when individuals experience discomfort due to conflicting beliefs or behaviors, prompting a change in attitudes or beliefs to alleviate that discomfort. While relevant in discussions of self-perception, it does not specifically address the active management of others' perceptions.

The fundamental attribution error is the tendency to overemphasize personal characteristics and underestimate situational factors when explaining others' behaviors. This concept relates to how we interpret actions but does not involve actively managing impressions in a psychological context.

The bystander effect describes a social phenomenon where individuals are less likely to help a victim when others are present. This concept is unrelated to impression management or the understanding of personality traits in a therapeutic environment.