METHODS OF RESEARCH
EXPERIMENTAL RESEARCH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Random assignment, group comparisons and threats to validity.
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Random assignment, group measures and manipulation.
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Outcome comparisons, threats to invalidity and random assignment.
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Group measures, control over ideas and threats to invalidity.
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Detailed explanation-1: -The components of experimental design are control, independent variable and dependent variable, constant variables, random assignment and manipulation. These are the components that also help you define if the experiment is valid.
Detailed explanation-2: -An experimental group is the group that receives the variable being tested in an experiment. The control group is the group in an experiment that does not receive the variable you are testing.
Detailed explanation-3: -Experimental designs, also called randomized experiments, are characterized by two distinguishing features: (i) the conscious manipulation by the researcher of a treatment or, more generically, an independent variable of interest, and (ii) the random assignment of units to treatment and control groups (Fig.