What Is A Random Assignment Essay On Violent Video S Aggression
Randomization has a very specific meaning in this context.
It does not refer to haphazard or casual choosing of some and not others.
The outcome measured –voter turnout– can then be compared in the two groups.
The difference in turnout will reflect the effectiveness of the intervention. The key to randomized experimental research design is in the random assignment of study subjects – for example, individual voters, precincts, media markets or some other group – into treatment or control groups.
A set of rules may be applied to random assignment to ensure that treatment and control groups are balanced.
For example, in a medical study, a rule could be applied that each group have an equal number of men and women.
Instead of letting students self-select, or even letting teachers select students (as teachers may have biases in who they choose), we could randomly assign all students in a given class to be in either a treatment or control group.
This would ensure that those in the treatment and control groups differ solely due to chance.
Or if house numbers are chosen by selecting those on the first half of a ten page list, they may be clustered in neighborhoods that differ in important ways from neighborhoods in the second half of the list.
About Randomized Field Experiments Randomized field experiments allow researchers to scientifically measure the impact of an intervention on a particular outcome of interest. In a randomized experiment, a study sample is divided into one group that will receive the intervention being studied (the treatment group) and another group that will not receive the intervention (the control group).
For instance, a study sample might consist of all registered voters in a particular city.
This is because there are, no doubt, qualities about those volunteers that make them different from students who do not volunteer.
And, most important for our work, those differences may very well correlate with propensity to vote.