Which Statement BEST Reflects the Relationship Between Serotonin and the Depression-Related

question 39

Multiple Choice

Which statement BEST reflects the relationship between serotonin and the depression-related brain circuit and suicide?

• A) Low levels of serotonin and poorer functioning of the depression-related brain circuit are related to high levels of aggression and impulsivity.
• B) High levels of serotonin and overactivity of the depression-related brain circuit are related to high levels of aggression and impulsivity.
• C) Serotonin makes people more likely to abuse substances and disrupts the depression-related brain circuit, increasing the likelihood of their committing suicide.
• D) Suicide attempts increase the level of serotonin in the brain, disrupting the depression-related brain circuit and making suicide more likely.

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Definitions:

Chi-Squared Test

A statistical test used to determine if there is a significant difference between observed frequencies and expected frequencies in one or more categories.

Degrees of Freedom

The amount of separate values or quantities that can be given to a statistical distribution.

P-Value

The p-value is a measure in statistical hypothesis testing that indicates the probability of obtaining test results at least as extreme as the ones observed, assuming the null hypothesis is true.

Level of Significance

The threshold under which a statistical result is considered statistically significant, traditionally set at 0.05 or 5%.