A Researcher Investigates Whether There Is a Relationship Between Hours

question 1

Multiple Choice

A researcher investigates whether there is a relationship between hours of sleep and memory for photographs by having 40 people sleep in the laboratory and waking 20 of the participants after 4 hours of sleep and the others after 8 hours of sleep.After they are awakened, each participant is asked to study 21 photographs and then recall as many details from the photographs as possible.In this study, what is 8 hours of sleep?

• A)The independent variable
• B)The dependent variable
• C)The sample
• D)A condition of the independent variable

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Definitions:

Retrospective Observational Study

A type of observational study that looks backward in time, often using existing records and data to identify relationships and outcomes.

School Records

Official documents containing a student's academic performance and personal information, maintained by educational institutions.

Graduated High School

The act of successfully completing the course of study at a high school, culminating in the receipt of a diploma.

Observational Study

Research methodology where the researcher observes subjects without manipulating any variables.