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<p>CSV import</p> <p><b>New page</b></p><div>&#039;&#039;&#039;Random assignment&#039;&#039;&#039; is a process used in [[experimental research]] to assign participants to different groups using randomization. This technique ensures that each participant has an equal chance of being placed in any group, which helps to eliminate [[selection bias]] and increases the [[internal validity]] of the experiment.<br /> <br /> ==Overview==<br /> Random assignment is a fundamental aspect of a [[randomized controlled trial]] (RCT), which is considered the gold standard in experimental research. By randomly assigning participants to either the [[experimental group]] or the [[control group]], researchers can be more confident that differences observed between groups are due to the [[independent variable]] rather than other factors.<br /> <br /> ==Methods==<br /> Several methods can be used for random assignment, including:<br /> * **Simple random assignment**: Each participant is assigned to a group purely by chance, often using a random number generator.<br /> * **Stratified random assignment**: Participants are divided into subgroups (strata) based on certain characteristics (e.g., age, gender) and then randomly assigned within each stratum.<br /> * **Block random assignment**: Participants are divided into blocks of a fixed size, and within each block, participants are randomly assigned to groups.<br /> <br /> ==Importance==<br /> Random assignment is crucial for ensuring the [[internal validity]] of an experiment. It helps to control for [[confounding variables]] and ensures that any observed effects are likely due to the manipulation of the [[independent variable]]. This process is essential for making causal inferences and generalizing findings to a larger population.<br /> <br /> ==Challenges==<br /> While random assignment is a powerful tool, it is not without challenges. Some of these include:<br /> * **Ethical considerations**: In some cases, it may be unethical to randomly assign participants to certain conditions.<br /> * **Practical constraints**: Random assignment may not always be feasible due to logistical or resource limitations.<br /> * **Non-compliance**: Participants may not adhere to their assigned group, which can introduce bias and affect the results.<br /> <br /> ==Related Concepts==<br /> * [[Random sampling]]<br /> * [[Blinding (research)]]<br /> * [[Placebo]]<br /> * [[Double-blind experiment]]<br /> * [[Quasi-experiment]]<br /> <br /> ==See Also==<br /> * [[Experimental design]]<br /> * [[Statistical hypothesis testing]]<br /> * [[Validity (statistics)]]<br /> * [[Reliability (statistics)]]<br /> <br /> ==References==<br /> {{Reflist}}<br /> <br /> ==External Links==<br /> {{Wiktionary|random assignment}}<br /> <br /> [[Category:Research methods]]<br /> [[Category:Experimental design]]<br /> [[Category:Statistics]]<br /> <br /> {{Research-methods-stub}}</div>

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