Group matching attempts to use data that has been collected previously. In an idea situation, an experimenter could randomly assign people to groups. For example one randomly chosen group gets the drug, while another randomly chosen group does not. Real life is rarely so nice, and often people are chosen to get a drug based on factors that are far from random. Matching attempts to use data about subjects so that the two groups are still at least somewhat comparable. For instance, suppose we gave a drug to everyone at a particular college, so most of the participants where between 18-22 years of age. We now want to find a second group to be our control group. It wouldn't make sense to draw our control group from a set of kindergartners or from a PTA meeting. Instead we should try to find a group of people as similar to the group that took the drug as possible. Perhaps other students from a similar school could be used. Group matching is a quasi-experimental design because the groups weren't really chosen randomly, so it doesn't qualify as a true experimental design.
A research design in which both the researchers and participants are unaware of who is in the control or intervention group is called a double-blind study. This design helps eliminate bias and placebo effects in research studies by ensuring that neither the researchers nor the participants can influence the results based on their knowledge of the group assignment. Double-blind studies are commonly used in medical and psychological research.
An independent research group is a collection of researchers who conduct studies and investigations on a particular topic or area of interest without being directly affiliated with a university or company. These groups often seek funding from a variety of sources and are free to pursue their research objectives independently.
Educational research can be classified into different categories such as quantitative research, qualitative research, mixed methods research, action research, and experimental research. These classifications are based on the research methods, approaches, and design used to answer research questions in the field of education.
Research design requires that researchers transform the research concepts into operational, or measurable, terms by selecting an appropriate research method; determining the population of the study;and developing an instrument for measuring the variables.
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the logic behind group matching is to ensure that experimental and control group are equvilant on some criterions( sex, race, height etc). Hopefully during group matching, say group matching for sex, one would first divide the sample into males and females and then randomly assign half of each group to each condition.
John Denos
Operation Research Group- Marketing Research Group
Small Group Research was created in 1970.
Lifted Research Group was created in 1999.
Universal Research Group was created in 2007.
Architectural Research Group ended in 1933.
Architectural Research Group was created in 1932.
Minorities Research Group was created in 1963.
Minorities Research Group ended in 1972.
Programming Research Group was created in 1965.
Brookson Research is a company that specializes in focus group research. A focus group is a select group of people that have certain traits in common. Focus group research refers to the monitoring of these traits over a period of time.