A Psychologist Conducts Research Using the Twin-Study Method

question 7

Multiple Choice

A psychologist conducts research using the twin-study method. He administers a need for Achievement scale to sets of monozygotic and dizygotic twins and finds a correlation of .50 between the scores for pairs of monozygotic twins. If this study is to demonstrate evidence for a genetic influence on need for Achievement, what would we expect the correlation to be between scores for pairs of dizygotic twins?

• A) Higher than .50
• B) Lower than .50
• C) Very close to .50
• D) There is no way to demonstrate a genetic influence with these data.

Appreciate the role of biological, psychological, and evolutionary factors in development.

Identify the components of the scientific method as it applies to developmental science.

Recognize the role of individual autonomy and activity in development.

Understand the concepts of rated horsepower and how it impacts motor performance on a continuous basis.

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Definitions:

Inelastic Supply

A situation in which the supply of a good or service is not significantly affected by changes in price, characterized by a relatively steep supply curve.

Underage Drinking

The consumption of alcoholic beverages by individuals below the legal drinking age in their respective jurisdictions.

Tax

A compulsory financial charge or some other type of levy imposed upon a taxpayer by a governmental organization in order to fund government spending and various public expenditures.

Deadweight Loss

A decrease in economic efficiency due to the failure to achieve or the impossibility of achieving equilibrium for a good or service.