The nurse researcher is the principal investigator for a research project and introduces a treatment for some of the project participants, this is known as Experimental Manipulation.
In most cases, manipulation means having control over the independent variable. In a real experiment, the researcher chooses or manipulates the value or magnitude of the independent variable that a participant encounters. Controlling external variables also helps.
The process by which researchers consciously modify, affect, or change the independent variables (IVs), also known as treatment variables or factors, in an experimental study design, is known as experimental manipulation.
Researchers can examine causal relationships between independent variables (IVs) and dependent variables (DVs), which are also known as an outcome or criterion variables, using this method. In particular, manipulating an IV enables researchers to investigate if the IV affects the DVs of a study.
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