RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
THE SCIENTIFIC METHOD AND DESCRIPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Dependent variable
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Operational Definition
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Independent Variable
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Control Variable
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Detailed explanation-1: -A researcher will decide how much water to add to find the results of his experiment. The dependent variable would be when the mold started to grow. This is a dependent variable because when the mold begins to grow depends on how much water or moisture is sprayed on the bread.
Detailed explanation-2: -The independent variable for the experiment is light and the dependent variable is bread mold reproduction. A control is a test in which the independent variable is kept constant in order to measure changes in the dependent variable.
Detailed explanation-3: -A dependent variable is what you measure in the experiment and what is affected during the experiment. The dependent variable responds to the independent variable. It is called dependent because it “depends” on the independent variable.
Detailed explanation-4: -Independent variable: Environmental conditions (sunlit area, cold, moisture and warmth). Dependent variable: Area of mould growth on bread.
Detailed explanation-5: -One common method is to get (or make) a transparent grid (you could carefully, with a ruler, draw a grid on a transparency). Then you can overlay the grid on your bread pieces and count how many squares are “mold-filled.” A similar option would be to take pictures of the bread and overlay your grid on the pictures.