Determine Whether the Study Depicts an Observational Study or an Experiment

question 99

Multiple Choice

Determine whether the study depicts an observational study or an experiment
-A researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. Afterinterviewing all 200 participants in the study, the researcher compared the rate of depression among thesmokers with the rate of depression among nonsmokers.

• A) observational study
• B) experiment

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Definitions:

Conversations

The informal exchange of ideas by spoken words between two or more people.

Sensory Memory

The shortest-term element of memory, which acts as a buffer for stimuli received through the senses, lasting up to several seconds.

Tone

In literature, the attitude of a writer toward the subject or audience; in music, a specific pitch or quality of sound.

Information-Processing Model

A cognitive approach comparing the human mind to a computer, focusing on how information is taken in, processed, stored, and retrieved.