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# Experimental Research Design The document describes different types of experimental research designs, highlighting key characteristics and variables. ## Variables * **Independent Variable (IV):** This variable is manipulated by the researcher to observe its effect on another variable. * **Dep...

# Experimental Research Design The document describes different types of experimental research designs, highlighting key characteristics and variables. ## Variables * **Independent Variable (IV):** This variable is manipulated by the researcher to observe its effect on another variable. * **Dependent Variable (DV):** This variable is measured to observe the effect of the independent variable. * **Control Variables:** These variables are held constant to ensure that they don't influence the relationship between the IV and DV. ## Experimental Designs * **Experimental Design:** This design has a clear plan, structure, and methods to establish cause-and-effect relationships between variables, and manipulating levels, or conditions of the independent variable. It involves randomly assigning participants to different treatment conditions. * **Quasi-Experimental Design:** This type of design evaluates the relationship between an intervention and an outcome, without randomly assigning participants to treatment or control groups. It's used when random assignment isn't possible or ethical. This type of research is used to examine the effect without manipulating the variables as in the case of the experimental design. **Key Points Emphasized:** * **Manipulation:** The researcher manipulates the independent variable to observe its effect on the dependent variable in different conditions. * **Measurements:** The document emphasizes measuring the dependent variable across different conditions of the independent variable. * **Comparison:** Comparing the results across different levels helps the researcher see the impact of the independent variable. * **Control:** Controlling other variables is crucial in ensuring the validity of the results. The document also mentions terms like "plan," "structure," "strategy," specific methods of data analysis, and the importance of carefully outlining and executing the research.