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:

Nonrivalry

A characteristic of certain goods where one person's consumption does not reduce availability to others, often associated with public goods.

Negative Externalities

Costs suffered by a third party as a result of an economic transaction which the parties directly involved in the transaction do not fully account for.

Public Good

A product that one individual can consume without reducing its availability to another individual and from which no one is excluded.

Marginal Benefit

The incremental utility or satisfaction derived from the consumption or production of an additional good or service unit.