Your father has a problem; what to get your mother for her birthday. He mentally reviews her reaction to presents he has given her in the past (a necklace, concert tickets, an ice cream maker). If he decides to get her tickets to the theatre because she seemed to like a fun night out more than the other items, which approach to problem solving would your father be using?
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trial and error◦
forming subgoals◦
changing the representation of the problem◦
searching for analogies