Final answer:
In Kelley's Covariation Model of attribution, consistency is the factor that relates to how frequently a person behaves similarly in the same situation.
Step-by-step explanation:
In Kelley's Covariation Model of attribution, the factor that relates to how frequently a person behaves similarly in the same situation is called consistency. Consistency refers to whether the person's behavior is consistently the same across multiple instances of the same situation or if it varies. If the person consistently behaves in a similar way in the same situation, it suggests that their behavior is attributed to their disposition or internal factors. On the other hand, if the person's behavior varies in the same situation, it suggests that their behavior is more influenced by situational factors.