Coleman has an IQ of 130 and tends to do very well in school
Solution
Q5) Coleman has an IQ of 130 and tends to do very well in school. This suggests that which of the following is true about IQ tests as measures of intelligence?
Answer- a) IQ tests are valid
Validity is the extent or degree to which a measurement corresponds to the results in the real world. In the given example as IQ of 130 is of superior intelligence and Coleman also performs well in school. Hence his performing well in school is corroborated with high IQ. Therefore, IQ tests are valid.
Q6) Courtney is a highly intelligent person and also a successful attorney. She is thankful that both of her parents not only had very high IQs but also gave her an experience filled and educationally rich childhood. Generally speaking, Courtney\'s high intelligence can be attributed to the
Answer b) Contributions of nature and nurture.
IQ of a child has been shownto be affected by the environment, development and also to the biologicla parents IQ (heredity). Hence, both nature (heredity) and nurture (the way child is brought up) contribute to IQ.
Q7) Demetrius, a 10 year old is taking the original Stanford-Binet intelligence test.If he consistently answers the question correctly at the level of a 12 year old, then accordingto Wilhelm-Stern original scoring method, Demetrius Intelligence quotient is
Answer b) 120
The formula is:
IQ = 100 x Mental age/chronological age
= 100 x 12/10
=120
