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  2. Variable and attribute (research) - Wikipedia

    en.wikipedia.org/wiki/Variable_and_attribute...

    In science and research, an attribute is a quality of an object (person, thing, etc.). [1] Attributes are closely related to variables. A variable is a logical set of attributes. [1] Variables can "vary" – for example, be high or low. [1]

  3. Design of experiments - Wikipedia

    en.wikipedia.org/wiki/Design_of_experiments

    Manipulation checks allow investigators to isolate the chief variables to strengthen support that these variables are operating as planned. One of the most important requirements of experimental research designs is the necessity of eliminating the effects of spurious, intervening, and antecedent variables. In the most basic model, cause (X ...

  4. Dependent and independent variables - Wikipedia

    en.wikipedia.org/wiki/Dependent_and_independent...

    A variable is considered dependent if it depends on an independent variable. Dependent variables are studied under the supposition or demand that they depend, by some law or rule (e.g., by a mathematical function), on the values of other variables. Independent variables, in turn, are not seen as depending on any other variable in the scope of ...

  5. Research design - Wikipedia

    en.wikipedia.org/wiki/Research_design

    Often, these variables are measured quantitatively. Flexible designs allow for more freedom during the data collection process. One reason for using a flexible research design can be that the variable of interest is not quantitatively measurable, such as culture. In other cases, the theory might not be available before one starts the research.

  6. Research - Wikipedia

    en.wikipedia.org/wiki/Research

    A keen interest in the chosen subject area is advisable. The research will have to be justified by linking its importance to already existing knowledge about the topic. Hypothesis: A testable prediction which designates the relationship between two or more variables. Conceptual definition: Description of a concept by relating it to other concepts.

  7. Sex as a biological variable - Wikipedia

    en.wikipedia.org/wiki/Sex_as_a_biological_variable

    Gillian Einstein in 2015 speaking on the importance of SABV in preclinical research. In 1999, the Institute Of Medicine established a committee on understanding the biology of sex and gender differences. In 2001, they presented a report that sex is an important variable in designing studies and assessing results.

  8. Psychological research - Wikipedia

    en.wikipedia.org/wiki/Psychological_research

    Longitudinal research is a type of research method used to discover relationships between variables that are not related to various background variables. This observational research technique involves studying the same group of individuals over an extended period of time. [1]

  9. Statistical significance - Wikipedia

    en.wikipedia.org/wiki/Statistical_significance

    To gauge the research significance of their result, researchers are encouraged to always report an effect size along with p-values. An effect size measure quantifies the strength of an effect, such as the distance between two means in units of standard deviation (cf. Cohen's d ), the correlation coefficient between two variables or its square ...