SENSATION AND PERCEPTION
VISION SENSORY AND PERCEPTUAL PROCESSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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you change only one variable.
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you change many variables.
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Either A or B
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None of the above
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Detailed explanation-1: -A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant.
Detailed explanation-2: -In a scientific experiment, a controlled experiment is a test that is directly altered by the researcher so that only one variable is studied at a time. The single variable being studied will then be the independent variable.
Detailed explanation-3: -A controlled experiment is an experiment in which only one variable is changed at a time. All other variables should be kept unchanged or controlled.
Detailed explanation-4: -A controlled experiment works with one variable at a time. If several variables were changed at the same time, the scientist would not know which variable was responsible for the observed results.
Detailed explanation-5: -In a controlled experiment, all variables other than the independent variable are controlled or held constant so they don’t influence the dependent variable. Controlling variables can involve: holding variables at a constant or restricted level (e.g., keeping room temperature fixed).