Independent and depentent variables of psychology

Here are a few things you can do to help you remember which is which: Which variable is the experimenter's measuring? A psychologist is interested in studying how a therapeutic technique influences the symptoms of psychological disorders.

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Share on Facebook Share on Twitter Share on Linkedin Share on Google Share by email An independent variable IV is a variable that is manipulated by a researcher to investigate whether it consequently brings change in another variable. When researchers make changes to the independent variable, they then measure any resulting changes to the dependent variable.

Independent and depentent variables of psychology

They are the variables that are kept constant to prevent their influence on the effect of the independent variable on the dependent. If the same experiment is repeated with the same participants, conditions, and experimental manipulations, the effects on the dependent variable should be very close to what they were the first time around. In a psychology experiment, researchers want to discover if listening to classical music helps students earn better grades on a math exam. Increasing the intensity of a tone should increase the speed at which people respond to the tone. What are your concerns? In an experiment, one group of students attends an after-school tutoring session twice a week while another group of students does not receive this additional assistance. It is the experimenter who manipulates the independent variable, whereas participants have nothing to do with it they are simply exposed to one version of the independent variable.

One is called the dependent variable and the other the independent variable. IVs and DVs only occur in experiments, as a cause and effect is predicted between the two i. Thus if we have a function f xthen x is an independent variable, and f x is a dependent variable.

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Both groups are given a list of words to recall immediately after reading the list. The independent variable is deemed independent because the experimenters are free to vary it as they need.

Examples of independent and dependent variables in research studies

It is the experimenter who manipulates the independent variable, whereas participants have nothing to do with it they are simply exposed to one version of the independent variable. Was this page helpful? The independent variable can be changed as required, and its values do not represent a problem requiring explanation in an analysis, but are taken simply as given. Examples of Dependent Variables As you are learning to identify the dependent variables in an experiment, it can be helpful to look at examples. This stipulation brings us to the logic that underlies the experimental method. What are your concerns? In this example, the type of music the runners listen to is the independent variable.

Researchers want to know whether first-born children learn to speak at a younger age than second-born children. For example, in an experiment looking at the effects of studying on test scores, studying would be the independent variable. Researchers are interested in seeing how long it takes people to respond to different sounds.

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Independent Variable