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Dependent Variable

Dependent and Independent Variable

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Dependent Variable

What is a dependent variable?

A different name is given to a variable, which refers only to experimental studies. The variable is called one variable and the variable independent. The dependent variable is the evaluated and calculated variable in an experiment that depends on the independent variable. In an experiment, the researcher examines the possible effect of a change in the independent variable on the dependent variable. For example, to see what impact that could have on the amount of information collected, we could change the type of information (i.e. structured or random) the participant receives. 

The information type is the separate variable (because it changes) and the quantity reported is that of the dependent variable (because it is measured). It is very important to define clearly with your independent and dependent variables in psychological research. For example, we must be very specific about what we mean by the different terms if we are concerned about the effects of media violence on aggression. In this case, it is necessary to state, as we will research it, what we mean by "medial violence" and "aggression."

The reason is not the argument that "young people have significantly better memories than older people." How can "youth," "old" or "past" be defined? "There is a significant increase in the number of names of participants between 16 and 30 years of age when there are 20 operational as participants between 55 and 70." The key point in this is that what is meant by the terms studied and measured in our experiment is perfectly clear. Unless we did this, the results of different studies, in the same way, would be very (if not impossible) difficult to compare.

In the past several experiments that treat the brain as an IV have been carried out. The brain, for instance, has a direct effect on actions. More recent studies have however shown that the brain is also a DV. Biofeedback, for example, is a kind of learning activity that helps you control stress responses such as heart rate or muscle pain. The action changes the brain gradually (and probably permanently). The brain is the control variable for biofeedback since it depends on activity during biofeedback sessions. Although the confusing definition of IV can be another example, it also emphasizes the importance of creating a good statement of hypotheses.

The dependent variable is the measured or tested variable in an experiment. Of instance, the dependent variable would be the test scores of the participants in a study to see how tutoring influences the test scores because this is what is being tested. Researchers investigate in a psychology experiment how changes in the independent variable trigger changes in the dependent variable. A health counselor would like to know more about the impact of stress on memory. In this case, the variable based on a memory test could be test scores and a challenging task could be identified by the independent variable.

A researcher would like to analyze the effect of test scores on the amount of time spent studying. This would be the independent variable and the dependent variable would be the test values. In this case, the scores of the exam differ depending on the number of assessments before the test. It was important for the investigator to adjust the independent variable by testing the age or gender effect measures.

Scientists want to discover in a psychological test whether listening to classical music helps students to earn better grades in a quantitative review. In this case, the outcomes of the math tests are the dependent variable and the independent variable is classical music. Investigators want to see how long it takes for people to react to various sounds. The time it takes for participants to respond to a sound in this example is the dependent variable, while the sonic variable is the independent one.

Researchers want to know if children who are firstborn learn to speak at a younger age than children who are the second born. In this case, the dependent variable is the age when the child learns to speak and whether the child is first or second born is the independent variable. In this example, scientists want to look at how alcohol consumption affects driving reaction times. The independent variable is the amount of alcohol consumed by a person, while the driving test depends on its results.

What are some experiment scenarios to practice identifying the dependent variable?

Experiments can vary from easy to complex, so it can sometimes be difficult to figure out how independent and dependent variables can be defined. It is a dependent variable if something is different as a result of changes in another variable. The dependent variable is a predictor of some type of participant behavior in many psychological experiments and studies. The dependent variable, as it is the indicator of participant behavior, will measure sleep in an experiment to see how sleep affects test performance. The variable depends on the variable because the changes in the independent variable were assumed to be dependent in some way. The independent variable is considered independent because it is freely varied when required by experimenters.

Also, while some studies may only have one dependent variable and one independent, it is possible to have several of each variable type. For example, researchers may want to learn how variables affect multiple different dependent variables within a single independent variable. A research scientist tests the effect of different doses of drugs on disease progression and measures the intensity and frequency of symptoms at various doses. The dosage is the IV and the signs are severe and recurrent for the DV. The intensity and frequency of symptoms depend on the dosage of pharmaceutical products administered. "It is the vector IV that theoretically influences a DV in non-experimental research, which does not require laboratory manipulation. For cigarette smoking and lung cancer studies, for example, the independent variable is cigarette smoking, which has already been achieved by many subjects. The variable (DV) depends on some elements which, the researcher, monitor, just like the name ‘sounds’.

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