If the Correlation Between the IQs of Identical Twins Is

question 196

Multiple Choice

If the correlation between the IQs of identical twins is .86,then,in any group of identical twins,what percent of the variation in the "Y" twins' IQs is accounted for by knowing
The IQs of their identical siblings (the "X's") ?

• A) 22
• B) 43
• C) 74
• D) 86

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Definitions:

Extinction

In psychology, the gradual weakening and eventual disappearance of a learned response when it is no longer reinforced.

Partial-Reinforcement Schedule

In operant conditioning, a strategy in which a behavior is reinforced intermittently, often resulting in more resistant and persistent responses.

Internal-Reinforcement Schedule

A strategy of self-management where individuals control their own rewards or punishments to modify behavior.

External-Reinforcement Schedule

This involves the regulation of behavior based on rewards or punishments administered from an outside source, used in various behavioral conditioning frameworks.