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  2. Intelligence: Knowns and Unknowns - Wikipedia

    en.wikipedia.org/wiki/Intelligence:_Knowns_and...

    Most research had been done on psychometric testing which was also by far the most widely used in practical settings. Intelligence quotient (IQ) tests do correlate with one another and that the view that the general intelligence factor (g) is a statistical artifact is a minority one. IQ scores are fairly stable during development in the sense ...

  3. Sample ratio mismatch - Wikipedia

    en.wikipedia.org/wiki/Sample_ratio_mismatch

    Using Pearson's chi-squared goodness of fit test, we find a sample ratio mismatch with a p-value of 2.54 × 10-10. In other words, if the assignment of users were truly random, the probability that these treatment and control group sizes would occur by chance is 2.54 × 10 -10 .

  4. IQ imbalance - Wikipedia

    en.wikipedia.org/wiki/IQ_imbalance

    IQ imbalance is a performance-limiting issue in the design of a class of radio receivers known as direct conversion receivers. [a] These translate the received radio frequency (RF, or pass-band) signal directly from the carrier frequency to baseband using a single mixing stage.

  5. IQ classification - Wikipedia

    en.wikipedia.org/wiki/IQ_classification

    Score distribution chart for sample of 905 children tested on 1916 Stanford–Binet Test. IQ classification is the practice of categorizing human intelligence, as measured by intelligence quotient (IQ) tests, into categories such as "superior" and "average". [1] [2] [3] [4]

  6. Estimation statistics - Wikipedia

    en.wikipedia.org/wiki/Estimation_statistics

    Many significance tests have an estimation counterpart; [26] in almost every case, the test result (or its p-value) can be simply substituted with the effect size and a precision estimate. For example, instead of using Student's t-test, the analyst can compare two independent groups by calculating the mean difference and its 95% confidence ...

  7. Variability hypothesis - Wikipedia

    en.wikipedia.org/wiki/Variability_hypothesis

    The 21st century has witnessed a resurgence of research on gender differences in variability, with most of the emphasis on humans. The results vary based on the type of problem, but some recent studies have found that the variability hypothesis is true for parts of IQ tests, with more men falling at the extremes of the distribution.

  8. Dunning–Kruger effect - Wikipedia

    en.wikipedia.org/wiki/Dunning–Kruger_effect

    Some researchers include a metacognitive component in their definition. In this view, the Dunning–Kruger effect is the thesis that those who are incompetent in a given area tend to be ignorant of their incompetence, i.e., they lack the metacognitive ability to become aware of their incompetence.

  9. Cognitive epidemiology - Wikipedia

    en.wikipedia.org/wiki/Cognitive_epidemiology

    Cognitive epidemiology is a field of research that examines the associations between intelligence test scores (IQ scores or extracted g-factors) and health, more specifically morbidity (mental and physical) and mortality. Typically, test scores are obtained at an early age, and compared to later morbidity and mortality.