There are a lot of components that exist on the Kelley's covariation model. The component of Kelley's covariation model that considers the similarity of Student X's behavior in other courses is Distinctiveness.
When a behavior is high in distinctiveness, we often want to make external attributions such as it's "unlike me" that is the situation made me act like this.
if a behavior is low in distinctiveness, the individual want to make internal attributions such as it's "like me". that is something about me led to this behavior.
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