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Random assignment: all you need to know

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Random assignment can be explained as the use of chance procedures in psychological experiments as it ensures that each participant has the same or equal opportunity to be assigned into any group to gather the most unbiased evidences and results. When forming study groups, the study participants are randomly assigned to groups; be it experimental groups or the treatment group. This can be done with tactics such as flipping a coin, drawing names from a hat, rolling the dice or even assigning numbers to the participants to divide them in groups without any prejudice.

It is essential to understand the difference between random assignment and random selection as both are not the same. When we talk about random selection, it is all about how the participants are randomly chosen to represent the larger population while random assignment is all about how these chosen participants are assigned to the groups for experimentation. 
Random assignment definition 
Random assignment has been define…