Cognitive Test

IQ Test

An accurate IQ test with the full interpretation of your IQ score instantly online? No way! You probably won't find an accurate IQ test online. They are free but also unreliable.

If you do a quick google-search for 'IQ test' right now, you would discover tons of them popping up to waste your time.

This is the reason you have to get an alternative system that is both reliable and time-saving.

Not just reliable and time-saving alone, but also devoid of cultural bias plaguing most IQ tests on the internet.

But relax, here is a proven system that works for virtually everyone:

IQ Test for All was professionally designed to replace unreliable IQ tests online; a workable system that saves your time without compromising relevance; most suitable for educational purposes and brain workouts.

Loosely modeled after the Raven's Progressive Matrices, each 3x3 matrix question has eight possible answers A-H.

You must choose the tile that best completes the matrix. All the 25 questions usually take about 20 – 30 minutes to answer, with scoring instructions and interpretations included.

Nobody likes being bored with an IQ test of over 200 questions. With IQ Test for All, you won't have to worry about any of these flaws. It's really that simple.

Exclusively for Neuroscientia users, you can get the book at $37.99 $11.99 in Amazon bookstore. It's now pretty much affordable for virtually everybody to own a copy of the paperback and eBook formats, conveniently.

Additionally, you would get access to important details on IQ tests, flaws, theories, nature-nurture controversies, cultural fairness, and bias plaguing most IQ tests.

Beginner's Guide to IQ Test

An IQ test or cognitive assessment test is a test of cognitive abilities like memory, comprehension, and generally, one's learning potential.

Anyone might want to take the IQ test, but there are several other types of cognitive test that could be used, depending on the purpose and preference of the test, usually administered by a professional psychologist trained in psychological testing.

Why do people so much rely on IQ tests and what makes them different from other cognitive ability tests? An IQ test was an invention of man from centuries ago. Though its major intent back then was quite different.

IQ tests are standardized assessments. They contain a uniform set of instructions and yield information about someone's performance in relation to a population sample of the same age peers.

Quite apart from a professional IQ test, free IQ tests are most often offered online, though you can't really vouch for their reliability.

Pros and Cons of Free IQ Tests

Free IQ tests have advantages and disadvantages. These shall be explored briefly. Ever taken an intelligence test online? There are many issues regarding such a test:

Pros of Free IQ Tests

  • Easily accessible
  • No financial demand
  • Fast

Cons of Free IQ tests

  • Less accurate
  • Less valid
  • Less standard

A Brief History of IQ Test

Intelligence can be characterized casually as cognitive ability. A man who solves a crossword puzzle or gives the correct response to a tedious numerical problem and gets a high score on that IQ test demonstrates some intelligence behavior, and it is sensible to surmise that such a man is intelligent. 

Poor execution, even on an IQ test, probably because of tiredness, an absence of motivation, test nervousness, and many other factors might all distort the whole essence of the test.

However, it is common for psychologists who prepared IQ tests to construct such measures in the light of their own judgment about intellectual ability and what exactly it should look like, but this also could be flawed, assuming cultural bias. 

In fact, around the mid-1920s, there were already numerous meanings and measures of intelligence, as there were many psychologists expounding on intelligence monoculturally.

In 1981, an American clinician Robert J. Sternberg and his colleagues conducted a research that allows them to obtain a numerical figure that qualifies as the standard for normal for intelligence they viewed everyone as (Sternberg et al., 1981).

 A term called factor analysis was utilized to look for basic topics. After 1921, numerous other casual definitions showed up in psychological literature.

Three components which rose up out of the investigation were: verbal intelligence, critical thinking, and common sense intelligence. Sternberg noted these as the most important segments of intelligence.

Sternberg and his co-researchers additionally demonstrated that scientists and non-scientists rave astoundingly comparable originations of intelligence.

Intelligence Quotient in Perspective

In 1912, William Stern called attention to the undeniable fact that a person's Mental Age reveals to us nothing about their intelligence unless we likewise know the individual's real (chronological) age (Stern, 1912), observed three 10-year-old kids called Anne, Beatrice, and Charles. 

Anne has a mental age of 7 years and is along these lines clearly beneath normal intelligence for her chronological age of 10. Beatrice has a mental age of 10 and is along these lines of normal intelligence.

 Charles has a mental age of 12 as is better than expected intelligence. Stern hit upon the clever thought of dividing mental age by Chronological Age and in regards to this quotient, which he called the Intelligence Quotient (IQ), as a file of intelligence. 

Stern's quotient was MA/CA; that is, Mental Age (MA) divided by Chronological Age (CA). The American clinician Lewis Terman later presented the shortened form IQ for Intelligence Quotient and recommended increasing Stern's portion by 100 to change it to a percentage (Terman 1916).

The changed idea of the IQ along these lines is characterized as:

IQ = MA/CA x 100/1

As per this equation, Anne, with a Mental Age of 7 and a chronological age of 10, has an IQ of 7 separated by 10, increased by 100, which works out as 70. This implies her Mental Age is 70 to her Chronological Age.

Beatrice, whose mental and chronological ages are both 10, has an IQ of 10 divided by 10, multiplied by 100, which comes to 100, which is normal for her age. Charles, whose Mental Age is 12 and whose Chronological Age is 10, has an IQ of 12 divided by 10, multiplied by 100, which comes to 120, so his Mental Age is 20.

 The most essential point to see is that an IQ of 100 is normal by definition, so IQs below 100 are below normal and IQs over 100 are better than expected. (an) Elizabeth, Andrew, and William are every one of the 5 years of age. 

(a) On an IQ test, Elizabeth passes just the IQ test that a normal 4-year-old in the standardized test passed, Andrew passes just those that a normal 5-year-old passed, and William passes just those that a normal 6-year-old passed.

Utilizing the equation, IQ = Mental Age (MA) divided by Chronological Age (CA), multiplied by 100 to analyze Elizabeth, Andrew and William's IQ scores. 

(b) Mark is 20 years of age and Philip is 40 years of age. They both pass just those things that a normal 20-year-old in the standardized test passed. Utilizing the equation, compute their IQs. Does the appropriate response appear to be reasonable for Philip when you consider it?

IQ Scores Distribution - Bell Curve


The normal distribution curve shows the ranges of IQ scores that are normal, abnormal, and extreme. Have a look at this image for an adequate understanding of this.

See what different IQ scores mean.

How Accurate Are IQ Tests? 

The properties of an IQ test, or of any measuring instrument so far as that is concerned, comprises of two primary factors: reliability and validity. 

These factors are psychologically referred to as Psychometric Properties. The reliability of a test is the consistency with which it measures what it ought to measure; while its validity is its accuracy at measuring what it ought to measure.

Illustratively, a measuring tape ought to measure the length of a table accurately, even to the point that, if we test it on another table (validity), it gives an accurate result because the instrument never changes.

Likewise, it should give similar outcomes if we measure similar items with it on two separate events. If the measuring tape is not predictable and stable, maybe in light of the fact that it tends to extend, at that point it is not a reliable measure (reliability). 

A similar thought applies to cognitive tests, for example, IQ tests. If an IQ test reliably measures general intellectual ability, at that point scores on some test items should associate well with scores on alternative items. 

Individuals' scores on the test on two separate events should likewise correlate- this is called convergent validity.

Does IQ even matter?

The short answer is, 'it depends.'

Have your IQ tested already? Whether the answer is a YES or a NO, you want the testing to have some psychological fulfilments. Isn't it? Now, there are reasons for testing IQ and these reasons are what make IQ testing important.

1. Social desirability

People might want to know their IQ score in order to get an approval of others or just get labeled as 'intellectual', be among the unusually high IQers or just get some prestige.

2. Social belongingness

IQ scores might set people apart from the general populace and place them among a particular group of IQers. For example, Mensa and Par are organizations to which a person with an IQ below 130+ cannot belong.

3. Academic success

IQ scores correlate with 'book smartness' and this is the major reason high IQers tends to perform well in school. People with relatively low IQ might be at a disadvantage. However, moderate IQers too can reach the same academic feat as a genius. Ever seen a someone with an average IQ (IQ between 85 - 115) graduating summa cum laude? YES and NO.

Is IQ Everything?

Experientially, IQ won't really matter. No one cares!

Without creativity and tangible achievements, an IQ score is pretty much useless. You've got to self-think and solve real-life problems.

Start implementing, think wide and uniquely, expand your mind, ignite your creativity, increase your focus.

You might need to grab one of the best brain boosters to supercharge your focus easily.

Nature-Nurture Controversy in Intelligence

For over a century, there has been a consensus in brain research over the relative commitments of heredity (nature) and environment (nurture) to intelligence. 

A case to delineate this is a disease called phenylketonuria. This is an absolutely genetic infection caused by a solitary latent quality and related to an extreme mental impediment.

However, the impacts of this genetic infection can be avoided by a solitary ecological change: by taking out phenylalanine, which is available in sustenance proteins, from the patient's eating routine.

This demonstrates an inherited trademark which is almost unchangeable but unmodifiable. It is likewise the case that a relatively stable, unmodifiable trademark doesn't necessarily have to be genetic.

This applies, for instance, to mental disorders coming about because of oxygen pressure at the time of birth.

Also, it is negligible to expound the heredity-versus-environment question about intelligence as an issue.

Keeping in mind the fact that human intelligence can only be discussed when there is a brain, and it would be quite difficult to have a brain without acquiring the fundamental qualities, obtaining its sustenance, oxygen, parental care and other environmental necessities for its development.

So any attempt to separate the nature-nurture of intelligence would be an intellectual folly.

Heritability of Intelligence

Heritability of intelligence is the statistics portraying the proportion of phenotypic variations of intelligence attributable to genetic variations.

In a society, any differences in intelligence are seen among every individual, and the fluctuation in intelligence would fundamentally be attributed generally to hereditary variables (nature) taking about 40% to 80%.

If education impacts intelligence (it is difficult to accept that it does not), disregarding environmental variables as being important would be totally a useless idea, which is most likely going to prompt the against its interaction with most inherited variables too.

While both biological and environmental factors play important roles in intelligence, one should accept the fact that nature and nurture should not continue to dwell on the irrational nature-nurture controversy. It's time to accept the fact.

Heritability and IQ?

Research scientists routinely perform comparative analyses on plants to decide the heritability of different qualities, however, it is clearly difficult to settle the IQ question by such strategies; since clinicians are constrained to laboratory techniques.

Scientists have utilized three primary methods for assessing the heritability of IQ: investigations of isolated identical twins, family studies, and adoption studies. 

Galton spearheaded two of these techniques primitively and detailed his outcomes in a book entitled Hereditary genius: an inquiry into its laws and consequences (Galton, 1869). 

Galton found that intelligence appeared to keep running in families, and he deduced from this that distinctions in intelligence are fundamental because of heredity.

Would you be able to relate the investigation benefited from the regular routine with regards to nepotism in the Roman Catholic Church, whereby popes used to receive young men from normal foundations and bring them up in their homes as 'nephews'? 

Galton argued that these young men had different points of interest, however, none of the hereditary focal points: 'the social variables are the same yet the inherited blessings are needed' (Galton, 1869).

Theory of Multiple Intelligences (Howard Gardner) 

Gardner thought there are eight types of intelligence. He believed each of us has the majority of the eight sorts of intelligence of fluctuating degrees. 

This numerous intelligence is identified with how an individual likes to learn and prepare data.

Verbal Intelligence: the ability to think in words and utilize language to express importance; ability to the implications and hints of words, the dominance of punctuation, fluency about the ways language can be utilized (creators, writers, speakers, artists, instructors).

Mathematical Intelligence: the ability to do mathematical operations. Comprehension of items and images and of activities that were performed on them and of the relations between these activities, ability to distinguish issues and look for clarifications (researchers, engineers, aerospace).

Visuospatial Intelligence: the ability to think three-dimensionally, ability to see the visual world precisely, to perform changes upon recognition, ability to adjust, and structure, ability to distinguish comparative examples (draftsmen, specialists, Mariners).

Kinesthetic Intelligence:  the ability to control protests and be physically proficient. Utilization of one's body in very gifted courses for expressive or objective coordinated purposes, ability to deal with objects skillfully (specialists, craftspeople, artists, competitors, performing artists).

Musical intelligence: the ability to pitch, tone, cadence, and tone. Ability to singular tones and expressions of music, a comprehension of approaches to consolidate tones and expressions into bigger melodic rhythms and structures, attention to passionate parts of music (artists, arrangers, delicate audience members).

Emotional Intelligence: the ability to comprehend and adequately associate with others; ability to notice and make qualifications among the states of mind, dispositions, motivations, and expectations of other individuals and conceivably to follow up on this information (instructors, emotional well-being experts, guardians, religious and political pioneers).

Intrapersonal Intelligence: ability to comprehend oneself. Access to one's own sentiments, ability to attract on one's feelings to direct and comprehend one's conduct, acknowledgment of individual qualities and shortcomings (scholars, authors, clinicians, specialists).

Interpersonal Intelligence: if intrapersonal intelligence is the ability to comprehend oneself, then interpersonal intelligence is the ability to understand others.

Naturalistic Intelligence: the ability to observe beauty in nature and comprehend normal and human-made frameworks. Affectability and comprehension of plants, creatures, and different parts of nature (ranchers, botanists, biologists, greens keepers, hippies).

Some Factors Influencing Intelligence

  1. Genetic influence
  2. Societal Influence
  3. Socio-economic influence
  4. Nutritional influence
  5. Geographical influence
  6. Race/Ethnicity 

Are IQ Tests Culturally Biased?

The answer to this question is precise to the point, ‘virtually all IQ tests are culturally biased.’

Culture-free: is characteristic of an IQ test with global intents and not just a test that was normed on only a population sample.

Culture-fair: is an IQ test that is devoid of cultural bias. An example is the Raven's progressive matrices test which helps to minimize language bias since the test items are progressively difficult questions with visuals only. 

Contrary-wise, most standard IQ tests are still questionable as to cultural fairness because they lack this feature.


Allport, C.W. and Ooberth, H. S. (1936) 'Trait-names: a psycho-lexical study', Psychological Monographs, vol. 47, whole no. 211.

Galton,  F. (1869) Hereditary genius: an inquiry into its laws and consequences, 2nd edition. (reprinted 1978), London: Iulian Friedmann.

Galton, F. (1883) Inquiries into the human faculty and its development, London: Macmillan.
Heath, A., Berg, K., Eaves, 1., Solaas, M., Corey, 1., Sundet, I., Magus, P. and Nance, W. (1985) 'Education policy and the heritability of educational attainment', Nature, vol. 314, pp. 734-6.

Sternberg, R.J., Conway, B.E., and Bernstein, M. (1981 ) 'People 's conceptions of intelligence ', Journal of Personality and Social Psychology, vol. 41, pp. 37-55. 

Terman, L.M. (1916) The measurement of intelligence, Boston, MA: Houghton Mifflin. 

Wechsler, D. (1981) WAIS-R manual: Wechsler Adult Intelligence Scale-revised, Cleveland, OH: The Psychological Corporation.

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