group sequential design

a research design in which a treatment is randomly assigned to different groups at varying times, such that every group receives the treatment eventually. A group sequential design is useful when it is important for each participant to have an opportunity to benefit from the treatment, but a comparison group nonetheless is required: The portion of the sample that receives the treatment later acts as a control group initially.

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Psychology term of the day

May 8th 2024

extremely low birth weight (ELBW)

Sorry, "extremely-low-birth-weight-elbw" is not in the Dictionary of Psychology. Please report to APA if you believe this is an error.