Methods to Control Extraneous Variables,”
Methods to Control Extraneous Variables,”
1-According to Grove & Burns, extraneous variables “exist in all studies and can interfere with obtaining a clear understanding of the relationships among the study variables” (2011). The amount of influence that extraneous variables can have on dependent variables is through control (Grove & Burns, 2011). When extraneous variables present itself, it can prevent researchers from developing a clear picture of the cause and effect or the ways that each study variables interact with one another. Types of controlled settings that a researcher might conduct their study would be in labs, research or experimental centers, and test units in hospitals or healthcare agencies (Grove & Burns, 2011). Extraneous variables can also be controlled using four different approaches: randomization, matching, using experimental designs, and statical control (“Methods to Control Extraneous Variables,” 2014). Randomization is when treatments are randomly given to the experimental groups. Matching is a technique in which confounding variables such as age, gender, income, etc. are matched into different groups so that each group contains equally distributed variables. The use of experimental designs can completely remove the chances of extraneous variables.
Grove & Burns. (2011). Understanding nursing research. Retrieved from https://evolve.elsevier.com/cs/product/9781455770601
Methods to Control Extraneous Variables. (2014, July 7). Retrieved from http://www.dissertationcanada.com/blog/methods-to-control-extraneous-variables/
