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Why is random assignment critical for research studies?

Understand the Problem

The question is asking about the significance of random assignment in research studies, which involves explaining its role in ensuring validity and reducing biases in experimental research.

Answer

Enhances internal validity by ensuring no systematic differences between groups.

Random assignment is critical for research studies because it enhances internal validity by ensuring no systematic differences between groups, allowing outcomes to be attributed to the independent variable.

Answer for screen readers

Random assignment is critical for research studies because it enhances internal validity by ensuring no systematic differences between groups, allowing outcomes to be attributed to the independent variable.

More Information

Random assignment is particularly important for ensuring the reliability and validity of experimental results, helping to control for extraneous variables and isolating the causal effects of the independent variable.

Tips

A common mistake is confusing random assignment with random selection. Random assignment ensures each participant has an equal chance of being in any group, which is different from random selection, which involves randomly choosing participants from a larger population.

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