The Research of Robert McCall, Which Evaluated the Stability of IQ

question 84

Multiple Choice

The research of Robert McCall, which evaluated the stability of IQ in a sample of 140 children, found that

• A)IQ is stable over time.
• B)about 50 percent of the sample had fluctuations in IQ that average 20 points.
• C)about 50 percent of individuals had increases in IQ.
• D)all individuals in the sample showed a decline in IQ.

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Definitions:

SSR

Sum of Squares due to Regression, a measure used in statistical analysis to determine the variability explained by the regression model.

SSE

Sum of Squared Errors, a measure used in statistics to indicate the deviation of the observed values from the values that are expected or predicted by a model.

Computed F Statistic

A calculated statistic used in the context of ANOVA tests, assessing the significance of group differences across multiple groups.