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Block Randomization
Block randomization is a modified random assignment strategy used to keep sample sizes similar across groups. A sequence is created where every condition appears once in a randomized order within a designated block before any condition is repeated. As each new participant enters the study, they are assigned to the next available condition in this pre-generated sequence.
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Research Methods in Psychology - 4th American Edition @ KPU
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Role of Random Assignment in Ensuring Group Comparability
A researcher wants to test if a new type of energy drink improves performance on a memory test. After recruiting 100 volunteers, which of the following procedures is the most effective way to create an experimental group (receives the energy drink) and a control group (receives a placebo)?
Block Randomization
Fallibility of Random Assignment
Random Assignment vs. Random Sampling
Modified Random Assignment
Software for Randomization
Using a Random Number Generator to Understand Randomization
Example of Simple Random Assignment
What is the primary function of random assignment in an experimental design?
Block Randomization
What is the primary purpose of using a modified random assignment procedure instead of strict random assignment?