Final answer:
The term for judgements about the motivations of a partner's behavior is the 'actor-observer bias', which describes how people tend to view others' actions as indicative of their character while attributing their own actions to situational factors.
Step-by-step explanation:
Judgements or social cognitions about the motivations of a partner's behavior is best described by the term actor-observer bias. This concept is related to the discrepancies we have when explaining our own behavior compared to that of others. In the context of relationships, the actor-observer bias might lead us to attribute our partner's actions to their character or disposition while viewing our own actions as influenced by situational factors.
The term actor-observer bias is aligned with social psychology, which examines how individuals perceive and interact with one another. When considering this bias, it is important to note its influence on interpersonal relationships and communication. It is a clear example of how our social cognitions can be skewed by our position as either the actor or the observer in a given situation.