GROWTH DEVELOPMENT CHILD
MEASUREMENT OF INTELLIGENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
intelligence is strongly genetic
|
|
|
intelligence has a strong environmental component
|
|
|
Identical twins attend better schools than fraternal twins
|
|
|
Adopted parents have a positive effect on intelligence.
|
Detailed explanation-1: -The mean correlation of IQ scores between monozygotic twins was 0.86, between siblings 0.47, between half-siblings 0.31, and between cousins 0.15.
Detailed explanation-2: -In this investigation, researchers found that identical twins raised together and identical twins raised apart exhibit a higher correlation between their IQ scores than siblings or fraternal twins raised together (Bouchard, Lykken, McGue, Segal, & Tellegen, 1990).
Detailed explanation-3: -Even when identical twins are adopted by two different families, their scores are very similar. Scans of identical twins’ brains reveal that gray-and white-matter volume is similar, and areas associated with verbal and spatial intelligence are virtually the same (Deary et al., 2009; Thompson et al., 2001).
Detailed explanation-4: -Researchers have previously shown that a person’s IQ is highly influenced by genetic factors, and have even identified certain genes that play a role. They’ve also shown that performance in school has genetic factors. But it’s been unclear whether the same genes that influence IQ also influence grades and test scores.