Dr Klein Wants to Investigate the Long-Term Effects of Antidepressants

question 36

Multiple Choice

Dr. Klein wants to investigate the long-term effects of antidepressants in children. To do so, she randomly selects a group of subjects and follows them across five years. What type of study is this?

• A) Naturalistic
• B) Cross-sequential
• C) Cross-sectional
• D) Longitudinal

---

Definitions:

Population

The complete set of individuals, items, or data from which a statistical sample is drawn for analysis.

Occurrences

Instances or events of something happening or being present.

Characteristics

Distinctive qualities or features that identify and differentiate individuals, groups, or things.

Descriptive Statistics

Statistical methods that summarize or describe the main features of a dataset, including measures like mean, median, mode, and standard deviation.