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  2. Cognitive bias - Wikipedia

    en.wikipedia.org/wiki/Cognitive_bias

    Heuristics are simple for the brain to compute but sometimes introduce "severe and systematic errors." [ 6 ] For example, the representativeness heuristic is defined as "The tendency to judge the frequency or likelihood" of an occurrence by the extent of which the event "resembles the typical case."

  3. Bias (statistics) - Wikipedia

    en.wikipedia.org/wiki/Bias_(statistics)

    In educational measurement, bias is defined as "Systematic errors in test content, test administration, and/or scoring procedures that can cause some test takers to get either lower or higher scores than their true ability would merit." [16] The source of the bias is irrelevant to the trait the test is intended to measure.

  4. Internal validity - Wikipedia

    en.wikipedia.org/wiki/Internal_validity

    During the selection step of the research study, if an unequal number of test subjects have similar subject-related variables there is a threat to the internal validity. For example, a researcher created two test groups, the experimental and the control groups.

  5. List of cognitive biases - Wikipedia

    en.wikipedia.org/wiki/List_of_cognitive_biases

    Overconfidence effect, a tendency to have excessive confidence in one's own answers to questions. For example, for certain types of questions, answers that people rate as "99% certain" turn out to be wrong 40% of the time. [5] [44] [45] [46] Planning fallacy, the tendency for people to underestimate the time it will take them to complete a ...

  6. Confirmation bias - Wikipedia

    en.wikipedia.org/wiki/Confirmation_bias

    For example, confirmation bias produces systematic errors in scientific research based on inductive reasoning (the gradual accumulation of supportive evidence). Similarly, a police detective may identify a suspect early in an investigation, but then may only seek confirming rather than disconfirming evidence.

  7. Bias - Wikipedia

    en.wikipedia.org/wiki/Bias

    Social desirability bias is a bias within social science research where survey respondents can tend to answer questions in a manner that will be viewed positively by others. [89] It can take the form of over-reporting laudable behavior, or under-reporting undesirable behavior.

  8. Attribution bias - Wikipedia

    en.wikipedia.org/wiki/Attribution_bias

    Research on attribution biases is founded in attribution theory, which was proposed to explain why and how people create meaning about others' and their own behavior.This theory focuses on identifying how an observer uses information in his/her social environment in order to create a causal explanation for events.

  9. Accuracy and precision - Wikipedia

    en.wikipedia.org/wiki/Accuracy_and_precision

    While precision is a description of random errors (a measure of statistical variability), accuracy has two different definitions: More commonly, a description of systematic errors (a measure of statistical bias of a given measure of central tendency, such as the mean). In this definition of "accuracy", the concept is independent of "precision ...