Take an IQ test developed by an IQ test developer. Each IQ test is designed with the highest standards and normed using Pearson's R. Pearson's R is calculated and applied to each IQ test to ensure validity and reliability. The norms will be publicly posted immediately after the data has become sufficient. Randy Myers, the developer of the IQ tests posted on this website, has published numerous books on IQ improvement and fiction. He has been developing IQ tests since 2015. All tests are auto-graded on an automated platform with instant results. You will be able to download your PDF certificate immediately after submitting your IQ test results.

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All IQ tests posted on this website are to be used for an estimation of one's IQ.

IQ Percentile

IQ scorePercentile

The information is based on the standard deviation of 15

Measuring G

The g factor, also known as general intelligence, general mental ability or general intelligence factor, is a construct developed in psychometric investigations of cognitive abilities and human intelligence. It is a variable that summarizes positive correlations among different cognitive tasks, reflecting the fact that an individual's performance on one type of cognitive task tends to be comparable to that person's performance on other kinds of cognitive tasks. The g factor typically accounts for 40 to 50 percent of the between-individual performance differences on a given cognitive test, and composite scores "IQ scores" based on many tests are frequently regarded as estimates of individuals' standing on the g factor. The terms IQ, general intelligence, general cognitive ability, general mental ability, and simply intelligence are often used interchangeably to refer to this common core shared by cognitive tests.The g factor targets a particular measure of general intelligence.

Pearson's R

In statistics, the Pearson correlation coefficient, also known as Pearson's r, the Pearson product-moment correlation coefficient, PPMCC, the bivariate correlation, or colloquially simply as the correlation coefficient, is a measure of linear correlation between two sets of data. It is the ratio between the covariance of two variables and the product of their standard deviations; thus it is essentially a normalized measurement of the covariance, such that the result always has a value between −1 and 1. As with covariance itself, the measure can only reflect a linear correlation of variables, and ignores many other types of relationship or correlation. As a simple example, one would expect the age and height of a sample of teenagers from a high school to have a Pearson correlation coefficient significantly greater than 0, but less than 1, as 1 would represent an unrealistically perfect correlation.

About IQ

An intelligence quotient, IQ is, a total score derived from a set of standardized tests or subtests designed to assess human intelligence. The abbreviation "IQ" was coined by the psychologist William Stern for a scoring method for intelligence tests at University of Breslau

IQ classification is the practice used by IQ test publishers for designating IQ score ranges into various categories with labels such as 'superior' or 'average'. IQ classification was preceded historically by attempts to classify human beings by general ability based on other forms of behavioral observation. Those other forms of behavioral observation are still important for validating classifications based on IQ tests.

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