Food is considered a primary reinforcer as it is a biological need that reinforces the behavior naturally whereas money is a secondary reinforcer.
A reinforcer refers to the stimulus that increases the chance of an expected response.
According to operant conditioning theory, food is a primary reinforcer because it is a basic need that reinforces the behavior naturally whereas money is a secondary reinforcer because the value of money should be learned included with the primary reinforcer so that it can be an effective method for the reinforcement.
Therefore, food is a primary reinforcer and money is a secondary reinforcer.
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