Group comparison research involves comparing the mean scores of two or more groups of research participants on one or more dependent variables.
How do you identify a comparison group?
A comparison group can be identified within the program’s agency (e.g., similar individuals who could have benefited from the program) or from another agency or community that does not have the service intervention available.
Why are comparison groups important in research?
Comparison groups are important because they help us “control” for any factors that may be influencing the relationship.
What is a compare group?
Compare Groups examines independent samples and makes inferences about the differences between them. Independent samples occur when observations are made on different sets of items or subjects.
What is a comparison group design?
Comparison Group Design. A matched-comparison group design is considered a “rigorous design” that allows evaluators to estimate the size of impact of a new program, initiative, or intervention.
What is the comparison group in an experiment called?
control group, the standard to which comparisons are made in an experiment. Many experiments are designed to include a control group and one or more experimental groups; in fact, some scholars reserve the term experiment for study designs that include a control group.
What makes a good comparison group?
A good comparison group should have substantial overlap with the treatment group in terms of the characteristics likely to affect program outcomes. Informed by the logic model, the evaluator should exercise judgment regarding the key characteristics that should be used to identify similar individuals.
Do you need a comparison group in an experimental study?
A true experiment (a.k.a. a controlled experiment) always includes at least one control group that doesn’t receive the experimental treatment. However, some experiments use a within-subjects design to test treatments without a control group.
What is the difference between a control group and a comparison group?
A Control Group is a group of individuals who received no treatment or a standard treatment. In contrast, a Comparison Group is a group of individuals who received no treatment or an alternative treatment. You may see the similarity between both.
What is the purpose of data comparison?
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How do you determine comparison?
Transitions such as “and,” “but,” “in addition,” “in contrast,” “furthermore,” and “on the other hand” can also be used to show comparison.
What’s a comparison group in psychology?
a comparison group in a study whose members receive either no intervention at all or some established intervention. The responses of those in the control group are compared with the responses of participants in one or more experimental groups that are given the new treatment being evaluated.
What is a comparison group in epidemiology?
After a period of time, the investigator compares the disease rate in the exposed group with the disease rate in the unexposed group. The unexposed group serves as the comparison group, providing an estimate of the baseline or expected amount of disease occurrence in the community.
What do you identify when comparing?
Comparing involves identifying similarities and/or differences (e.g., apples and oranges are both fruit) whereas contrasting involves comparing two or more objects or events in order to show their differences (e.g., an apple has a thin skin that we can eat; an orange has a thick skin that we cannot eat).
What are some examples of comparisons?
Comparing two things
“She’s a lot more intelligent than him.” “This car is much faster than the other one.” “They are much less wealthy than they used to be.” “He’s a little taller than his sister.”
What are the types of comparisons?
There are three kinds of possible comparisons: equal, comparative and superlative.