The part of the customer purchase decision process is internal search. It is because Brian thinks that Brian's friend would like a new one by the same maker.
Decision-making in psychology can be defined as the cognitive process resulting in the selection of a belief or a course of action among several possible alternative options. Decision making could be either irrational or rational. There are two types in decision making, such as internal search and external search. Internal search can be defined as the acquisition of information that is and available in memory. External search can be defined as the acquisition of information from sources outside of memory.
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