TESTING AND INDIVIDUAL DIFFERENCES
GROUP DIFFERENCES AND THE QUESTION OF BIAS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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intelligence
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emotions
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study habits
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Information-processing skills
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Detailed explanation-1: -The correlation of intelligence test scores for identical twins raised together is about +. 85. For identical twins raised apart, the correlation is about +. 72.
Detailed explanation-2: -Knowing the intelligence score of one fraternal twin raised together with their sibling allows predicting the other twin’s score with an accuracy of 55%. For identical twins reared together the percentage goes up to 86%, while for identical twins reared apart the percentage drops slightly, to 76%.
Detailed explanation-3: -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-4: -The first IQ tests Binet designed a series of questions aimed at distinguishing children who may have learning disabilities or need special help, which he thought children of different ages could answer correctly.