The First Major Study of Separated Twins Was Done in 1937

question 16

Multiple Choice

The first major study of separated twins was done in 1937 by a biologist,a psychologist,and a statistician.All of the following are true about this study EXCEPT

• A) there was a positive correlation between the twins' IQ, indicating a significant role for heredity.
• B) those twin pairs who had been most completely separated and reared in different environments showed the greatest IQ differences, indicating a significant role for environment.
• C) it was difficult to find identical twin pairs who had been fully separated.
• D) the study involved more than 100 twin pairs.

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Definitions:

Significance Level

Another term for level of significance, it represents the probability of rejecting the null hypothesis when it is actually true, typically denoted by alpha (α).

Standard Deviation

A statistical metric that quantifies the dispersion or variability of a dataset relative to its mean.

Significance Level

A threshold below which a p-value indicates that the null hypothesis can be rejected.

Standard Deviation

A statistic that quantifies the dispersion or spread of a set of data points around their mean value, highlighting variability within the data set.