A Study Has Found a Positive Correlation Between Smoking Cigarettes

question 137

Multiple Choice

A study has found a positive correlation between smoking cigarettes and schizophrenia. Which is/are possible explanations for this finding?

• A) A third variable could be causing both.
• B) Some property of nicotine could be part of the cause of schizophrenia.
• C) Something about the nature of schizophrenia could be a factor in the cause of smoking.
• D) All of the above are possible explanations for this finding.

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Definitions:

Myelin Sheath

A fatty covering that surrounds and insulates nerve fibers, speeding up the transmission of nerve impulses.

Neural Impulses

Electrical impulses moving through neurons that convey data across the nervous system.

Frequency

The rate at which a repeating event occurs over a set period, often measured in cycles per second or hertz in the context of waves or vibrations.

Threshold

The minimum level of stimulus intensity required for an individual to perceive a sensation or produce a response.