12 Questions
What is an independent variable (IV) in a research study?
The variable manipulated by the researcher
How many levels can an independent variable have in an investigation?
Two levels
In a study examining the influence of caffeine on performance, what would be the independent variable (IV)?
The level of caffeine
What is a dependent variable (DV) in a research study?
The variable measured by the researcher
Why should the dependent variable (DV) be affected by the manipulation of the independent variable (IV)?
To show a cause-and-effect relationship
How can one identify the dependent variable (DV) in an investigation?
By looking at what is being measured
Why is it important to operationalize variables in a study?
To make them specific and detailed for measurement by other researchers
What is the term used for factors in an investigation that may interfere with the IV or DV?
Extraneous variables
If an extraneous variable affects the outcome of a study, what is it called?
Confounding variable
What do demand characteristics in a study refer to?
Clues provided by participants about the study's purpose
Why are extraneous variables important to control in a study?
To enhance the validity of the study
How do confounding variables affect research outcomes?
By distorting the true relationship between variables
Learn about the concept of independent variable (IV) in research, which is the variable directly manipulated by the researcher to examine its effect. Understand how IV can have multiple levels and impact the study outcomes.
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