Experimental
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designs provide the greatest level of rigor. They are characterized by a
high degree of control over the research setting to allow for the
determination of cause-and-effect relationships among variables. They
can only be used, however, when randomization of individuals or groups
to conditions (e.g., new simulation group versus traditional training
group) is supported by the training evaluation conditions.
Quasi-experimental
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designs follow the experimental design but lacks random assignment
and/or manipulation of independent variable. Quasi experimental designs
such as comparison group pre-test/post-test design, time series, and
non-equivalent control groups are used when it is not feasible to
control the assignment of subjects to conditions.
Non-experimental
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research such as case studies, ethnographic approaches and correlational
research is often needed to scope out the experimental one.
Non-experimental designs are used when human characteristics or
independent variables are not subject to experimental manipulation or
randomization, variables of interest cannot ethically be manipulated, or
it is not practical to conduct a true experiment.
MST-READI is a collaborative research effort among US Army RDECOM-STTC,
OSDi and CWS, funded by RDECOM-STTC
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