Scott and Brad Are Identical Twins Who Are 8 Years

question 161

Multiple Choice

Scott and Brad are identical twins who are 8 years old.They both attend the same school and live together in the same household.How would Rowe and Plomin characterize these factors?

• A)nonshared environmental influence
• B)shared hereditary
• C)shared environmental influence
• D)nonshared hereditary

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Definitions:

Linear Trend Line

A straight line drawn through data in a scatter plot to model the general direction or relationship between variables.

Quadratic Trend Line

A parabola that best fits the data in a scatterplot, used to model relationships that follow a quadratic pattern, showing accelerations or decelerations in trends.

Mean Absolute Deviation

A measure of variability that calculates the average distance between each data point and the mean of the data set.

Actual Values

The observed or measured values in a dataset, as opposed to predicted or estimated values.