Londra and Sondra Are Identical Twins Who Have Been Raised

question 25

Multiple Choice

Londra and Sondra are identical twins who have been raised together in the same home. Londra has developed a psychological disorder, but Sondra does not appear to have the same disorder. This information could be used as evidence to suggest that ​

• A)genetic factors have more influence than environmental factors in this disorder.
• B)environmental factors have more influence than genetic factors in this disorder.
• C)both genetic and environmental factors contribute equally to this disorder.
• D)neither genetic nor environmental factors contribute to this disorder.

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Definitions:

Variable-ratio

A schedule of reinforcement where a response is reinforced after an unpredictable number of responses, leading to a high and steady response rate.

Fixed-ratio

A schedule of reinforcement where a response is reinforced only after a specified number of responses, often used in behavior analysis.

Biological Predisposed

An inherent inclination or natural tendency for individuals to exhibit certain behaviors or characteristics due to genetic factors.

Aversive Events

Incidents or stimuli that are unpleasant or noxious, leading to avoidance behavior.