Answer :
Final answer:
The IQ score for a five-year-old child scoring a mental age of four on the Stanford-Binet Test would be 80. The Stanford-Binet test is an intelligence test for children and adults that evaluates various cognitive abilities. An IQ score of 80 falls within the normal range, but is slightly below average.
Explanation:
The IQ (Intelligence Quotient) of a five-year-old child having a mental age of four can be calculated by the formula initially proposed by William Stern, a German psychologist. The formula is IQ = (Mental Age/Chronological Age) * 100. So, in this scenario, the child's IQ would be calculated as follows: (4/5) * 100 = 80. Thus, the IQ of a five-year-old child scoring a mental age of four on the Stanford-Binet test would be 80.
It's important to note that the Stanford-Binet test is an intelligence test that evaluates cognitive abilities in children and adults, from age two to adulthood. It's based on the concept that intelligence encompasses various mental abilities, such as memory, reasoning, and the ability to solve problems and think abstractly.
Having an IQ score of 80 falls within the normal range. As the provided reference information states, the majority of people score between 85 and 115 on IQ tests. However, it is slightly below the average which may be indicative of possible learning difficulties, but it isn't indicative of an intellectual disability which is generally characterized by an IQ score below 70.
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