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  2. Null hypothesis - Wikipedia

    en.wikipedia.org/wiki/Null_hypothesis

    For example, the angular momentum of the universe is zero. If not true, the theory of the early universe may need revision. Null hypotheses of homogeneity are used to verify that multiple experiments are producing consistent results. For example, the effect of a medication on the elderly is consistent with that of the general adult population.

  3. Psychology of reasoning - Wikipedia

    en.wikipedia.org/wiki/Psychology_of_reasoning

    Language can be used to convey different levels of politeness, power, and intention, which can all affect how people interpret and respond to messages. For example, if a boss asks an employee to complete a task using a commanding tone, the employee may feel more pressured to complete the task quickly, compared to if the boss asked in a polite tone.

  4. Deductive reasoning - Wikipedia

    en.wikipedia.org/wiki/Deductive_reasoning

    Deductive reasoning is the psychological process of drawing deductive inferences.An inference is a set of premises together with a conclusion. This psychological process starts from the premises and reasons to a conclusion based on and supported by these premises.

  5. Decision theory - Wikipedia

    en.wikipedia.org/wiki/Decision_theory

    The mythological Judgement of Paris required selecting from three incomparable alternatives (the goddesses shown).. Decision theory or the theory of rational choice is a branch of probability, economics, and analytic philosophy that uses the tools of expected utility and probability to model how individuals would behave rationally under uncertainty.

  6. Power (statistics) - Wikipedia

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

    In the trivial case of zero effect size, power is at a minimum and equal to the significance level of the test , in this example 0.05. For finite sample sizes and non-zero variability, it is the case here, as is typical, that power cannot be made equal to 1 except in the trivial case where α = 1 {\displaystyle \alpha =1} so the null is always ...

  7. Propositional calculus - Wikipedia

    en.wikipedia.org/wiki/Propositional_calculus

    The premises are shown above a line, called the inference line, [15] separated by a comma, which indicates combination of premises. [44] The conclusion is written below the inference line. [ 15 ] The inference line represents syntactic consequence , [ 15 ] sometimes called deductive consequence , [ 45 ] which is also symbolized with ⊢.

  8. List of cognitive biases - Wikipedia

    en.wikipedia.org/wiki/List_of_cognitive_biases

    Gerd Gigerenzer has criticized the framing of cognitive biases as errors in judgment, and favors interpreting them as arising from rational deviations from logical thought. [ 6 ] Explanations include information-processing rules (i.e., mental shortcuts), called heuristics , that the brain uses to produce decisions or judgments.

  9. Expected utility hypothesis - Wikipedia

    en.wikipedia.org/wiki/Expected_utility_hypothesis

    For example, as someone gets wealthier, an extra dollar or an additional good is perceived as less valuable. In other words, desirability related with a financial gain depends not only on the gain itself but also on the wealth of the person. Bernoulli suggested that people maximize "moral expectation" rather than expected monetary value.