Final answer:
The impression a co-actor has of an actor's competence is influenced by whether the actor meets the co-actor's expectations, which aligns with the principles of social psychology and is applicable in the context of acting and performance.
Step-by-step explanation:
The question addresses whether co-actor's impression of actor's competence is a function of the actor's fulfillment of co-actor's expectations. This relates to the concept of self-fulfilling prophecy and the study of social psychology, particularly within the realm of perception and interpersonal relationships. Within the context of a performance or social interaction, the expectation that a co-actor (or observer) has of an actor can indeed influence their perception of the actor's competence. If the actor meets or exceeds these expectations, the co-actor's impression of the actor's competence is likely to be favorable. This is consistent with findings in social psychology regarding how our expectations can shape our perceptions of others, as seen in the research on stereotypes and actor-observer bias. In the context of acting, an actor's effectiveness and the success of their performance are often judged based on their ability to meet the expectations of the co-actors, the director, and the audience. This aligns with the actor preparing a performance with the character's intentions aiming toward a desired outcome, and the emotional investment belonging to the actor, as mentioned in the provided information.