What theory best explains why Doug,who lent his lawn mower to his neighbor,becomes so mad when his kindness is not reciprocated?

Question

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Social exchange theory posits that people engage in social interactions based on the exchange of rewards and costs. In this scenario, Doug lent his lawn mower to his neighbor with the expectation of reciprocity, where his neighbor would reciprocate the same level of kindness at a later point. When his neighbor does not reciprocate, Doug perceives this as a breach of the social exchange agreement, leading to negative feelings such as anger and frustration.

What Theory Best Explains Why Doug,who Lent His Lawn Mower