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  2. Quasi-experiment - Wikipedia

    en.wikipedia.org/wiki/Quasi-experiment

    A quasi-experiment is an empirical interventional study used to estimate the causal impact of an intervention on target population without random assignment.Quasi-experimental research shares similarities with the traditional experimental design or randomized controlled trial, but it specifically lacks the element of random assignment to treatment or control.

  3. Design of experiments - Wikipedia

    en.wikipedia.org/wiki/Design_of_experiments

    An experimental design or randomized clinical trial requires careful consideration of several factors before actually doing the experiment. [32] An experimental design is the laying out of a detailed experimental plan in advance of doing the experiment.

  4. Regression discontinuity design - Wikipedia

    en.wikipedia.org/.../Regression_discontinuity_design

    The RD design takes the shape of a quasi-experimental research design with a clear structure that is devoid of randomized experimental features. Several aspects deny the RD designs an allowance for a status quo. For instance, the designs often involve serious issues that do not offer room for random experiments.

  5. Interrupted time series - Wikipedia

    en.wikipedia.org/wiki/Interrupted_time_series

    Interrupted time series design is the design of experiments based on the interrupted time series approach. The method is used in various areas of research, such as: political science : impact of changes in laws on the behavior of people; [ 2 ] (e.g., Effectiveness of sex offender registration policies in the United States )

  6. Experimental data - Wikipedia

    en.wikipedia.org/wiki/Experimental_data

    Experimental data in science and engineering is data produced by a measurement, test method, experimental design or quasi-experimental design. In clinical research any data produced are the result of a clinical trial. Experimental data may be qualitative or quantitative, each being appropriate for different investigations.

  7. Research design - Wikipedia

    en.wikipedia.org/wiki/Research_design

    The design of a study defines the study type (descriptive, correlational, semi-experimental, experimental, review, meta-analytic) and sub-type (e.g., descriptive-longitudinal case study), research problem, hypotheses, independent and dependent variables, experimental design, and, if applicable, data collection methods and a statistical analysis ...

  8. The dark fandom behind healthcare CEO murder suspect - AOL

    www.aol.com/dark-fandom-behind-healthcare-ceo...

    The Network Contagion Research Institute (NCRI), a non-profit extremism research group based in New Jersey, said that after the shooting the hashtag #EatTheRich went viral.

  9. Impact evaluation - Wikipedia

    en.wikipedia.org/wiki/Impact_evaluation

    Impact evaluation designs are identified by the type of methods used to generate the counterfactual and can be broadly classified into three categories – experimental, quasi-experimental and non-experimental designs – that vary in feasibility, cost, involvement during design or after implementation phase of the intervention, and degree of ...