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  2. Research design - Wikipedia

    en.wikipedia.org/wiki/Research_design

    There are many ways to classify research designs. Nonetheless, the list below offers a number of useful distinctions between possible research designs. A research design is an arrangement of conditions or collection. [5] Descriptive (e.g., case-study, naturalistic observation, survey) Correlational (e.g., case-control study, observational study)

  3. Research proposal - Wikipedia

    en.wikipedia.org/wiki/Research_proposal

    A research proposal is a document proposing a research project, generally in the sciences or academia, and generally constitutes a request for sponsorship of that research. [1] Proposals are evaluated on the cost and potential impact of the proposed research, and on the soundness of the proposed plan for carrying it out. [ 2 ]

  4. Empirical research - Wikipedia

    en.wikipedia.org/wiki/Empirical_research

    The result of empirical research using statistical hypothesis testing is never proof. It can only support a hypothesis, reject it, or do neither. These methods yield only probabilities. Among scientific researchers, empirical evidence (as distinct from empirical research) refers to objective evidence that appears the same regardless of the ...

  5. Longitudinal study - Wikipedia

    en.wikipedia.org/wiki/Longitudinal_study

    Under longitudinal research methods, the reduction in the research sample will bias the remaining smaller sample. [ citation needed ] Practice effect is also one of the problems: longitudinal studies tend to be influenced because subjects repeat the same procedure many times (potentially introducing autocorrelation ), and this may cause their ...

  6. Research - Wikipedia

    en.wikipedia.org/wiki/Research

    Neo-colonial research or neo-colonial science, [59] [60] frequently described as helicopter research, [59] parachute science [61] [62] or research, [63] parasitic research, [64] [65] or safari study, [66] is when researchers from wealthier countries go to a developing country, collect information, travel back to their country, analyze the data ...

  7. Open Letter on Public Polling - images.huffingtonpost.com

    images.huffingtonpost.com/2010-11-08-OpenLetter...

    The American Association of Public Opinion Research outlines clear and extensive standards for the report of publically released research studies. AAPOR urges full and complete disclosure at the time results are released of elements including sampling and sample design and the exact wording of questions and responses whose results are reported.

  8. Design of experiments - Wikipedia

    en.wikipedia.org/wiki/Design_of_experiments

    The use of a sequence of experiments, where the design of each may depend on the results of previous experiments, including the possible decision to stop experimenting, is within the scope of sequential analysis, a field that was pioneered [12] by Abraham Wald in the context of sequential tests of statistical hypotheses. [13]

  9. Clinical study design - Wikipedia

    en.wikipedia.org/wiki/Clinical_study_design

    Randomized controlled trial [5]. Blind trial [6]; Non-blind trial [7]; Adaptive clinical trial [8]. Platform Trials; Nonrandomized trial (quasi-experiment) [9]. Interrupted time series design [10] (measures on a sample or a series of samples from the same population are obtained several times before and after a manipulated event or a naturally occurring event) - considered a type of quasi ...