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In psychological research, the primary objective is to establish a clear and accurate relationship between the independent variable and the dependent variable. However, this relationship may be influenced by variables that are not part of the study's main focus. These are known as extraneous variables and confounded variables. Understanding and controlling these variables is essential for ensuring the validity, reliability, and accuracy of research findings. An extraneous variable is any variable other than the independent variable that may influence the dependent variable. It is not the variable of interest, but if left uncontrolled, it can affect the outcome of the experiment. Extraneous variables introduce unwanted variation into the data, making it difficult to determine whether observed changes in the dependent variable are actually caused by the independent variable. These variables can arise from participants, the environment, the researcher, or the experimental procedure. Participant variables are common extraneous variables. Differences in age, gender, ___ __________ ___ ______ _______ __________ ____ ______ ___ ____.
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