Glossary / Lexicon

Randomization refers to the process whereby individuals are assigned to study groups without biases or differences resulting from selection.

A technique for assigning experimental subjects to experimental and control groups randomly.

The use of a random process to help avoid a systematic relationship between two variables. The intent is to disrupt any systematic relationship that might exist between extraneous variables and the independent variable.

Description

Randomization in psychology is a crucial method used in research studies to eliminate bias and ensure the validity of results. It involves assigning participants to different groups or conditions in a randomized manner, rather than based on any predetermined criteria. This process helps to control for confounding variables and increases the likelihood that any observed effects are truly due to the intervention being studied. Randomization also helps to ensure that groups are comparable at the beginning of the study, reducing the risk of systematic differences impacting the results. Overall, randomization is a fundamental aspect of experimental design in psychology, playing a key role in the credibility and reliability of research findings.

Application Areas

• Clinical trials
• Intervention studies
• Comparative effectiveness research
• Experimental psychology studies
• Program evaluations

Treatment and Risks

• Treatment: Randomization ensures that all participants have an equal chance of being assigned to any group, reducing bias and increasing the validity of study results.
• Risks: One potential risk of randomization is the possibility of unequal group sizes, which can impact statistical power and the ability to detect meaningful effects.

Examples

• A study investigating the effectiveness of a new therapy randomly assigns participants to either receive the therapy or a control Condition.
• In a classroom intervention study, students are randomly assigned to different teaching methods to evaluate their impact on academic performance.
• In a survey research study, participants are randomly assigned to different question orders to examine potential order effects on responses.

Similar Concepts and Synonyms

• Random assignment
• Random allocation
• Random selection
• Randomized control trials

Articles with 'Randomization' in the title

• Randomization within constraints: Randomization within constraints refers to a method of selection in which items are randomly chosen within the bounds of some selection rule or rules. For example, conditions are ran domly chosen within the constraint that they be . . .

Weblinks

• environment-database.eu: 'Randomization' in the glossary of the environment-database.eu

Summary

Randomization in psychology is a critical method used in research studies to reduce bias and ensure the validity of results. By randomly assigning participants to different groups or conditions, researchers can control for confounding variables and increase the credibility of their findings. This process is essential for establishing cause-effect relationships and drawing meaningful conclusions from research data.

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