Final answer:
Consistency is the factor in Kelley's covariation model that addresses whether a person behaves similarly in other situations.
Step-by-step explanation:
The factor in Kelley's covariation model of attribution that addresses whether a person behaves similarly in other situations is consistency. According to Kelley, when trying to attribute the cause of someone's behavior, we look for consistency in that behavior across different situations. If the person behaves in a similar way in other situations, we are more likely to attribute their behavior to internal factors, such as their personality traits. However, if the person's behavior varies across situations, we are more likely to attribute their behavior to external factors, such as the situation they are in.