Dear Kenjabek, Cattell’s g factor test would be a possibility, but see also the paper by Ganuthula and Sinha (2019) on your fundamental question:

Santiago-Fernandez P, Torres-Barahona R, et al. Intelligence quotient and iodine intake: a cross-sectional study in children. J Clin Endocrinol Metab. 2004;89(8):3851-7. https://www.researchgate.net/publication/8418893_Intelligence_Quotient_and_Iodine_Intake_A_Cross-Sectional_Study_in_Children

Ganuthula VRR, Sinha S. The Looking Glass for Intelligence Quotient Tests: The Interplay of Motivation, Cognitive Functioning, and Affect. Front Psychol. 2019;10:2857. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6927908/pdf/fpsyg-10-02857.pdf

Dear Dr. Kenjabek Rozumbetov ,

I suggest you to have a look at the following document:

-Salt Iodization by GiveWell

Available at: https://www.givewell.org/print/international/technical/programs/salt-iodization

My best regards, Pierluigi Traverso.

For kids - https://www.oxfordlearning.com/whats-the-score-problems-with-iq-tests-for-kids/#:~:text=Wechsler%20Intelligence%20Scale%20for%20Children,measure%20different%20dimensions%20of%20functioning.

For adults - https://www.verywellmind.com/the-wechsler-adult-intelligence-scale-2795283

Some of the most widely used IQ tests include: Wechsler Intelligence Scale for Children (WISC-V) Wechsler Intelligence Scale for Adults (WAIS) Stanford-Binet Intelligence Scale.

IQ Testing: Purpose, Procedure, and Results - Healthline

https://www.healthline.com › health › iq-testing

Thank you very much, Dr. Martin Hofmeister for your comment.

Thank you very much, Dr. Pierluigi Traverso for your comment.

Thank you very much, Dr. Jaydip Datta for your comment.

Thank you very much, Dr. Lamia Mustafa Al-Naama for your comment.

Stanford-Binet IQ test is commonly used

Thank you very much, Dr. Srini Vasan for your comment.

First of all, clarify that it is not called "Intelligence coefficient", if not INTELLIGENCE QUOTE (IC) since in the DIVISION (QUOTE) BETWEEN MENTAL AGE AND CHRONOLOGICAL AGE, which is multiplied by 100 (this is a coefficient ... BUT IT IS THE SAME FOR EVERYONE, THEN DOES NOT NAME IT). SAID THIS WE HAVE:

-The Binet Scales: The first of them is the Stanford-Simon, from 1905, then we have the Scales known as STANFOD-BINET (1916) being Tests that calculate the Mental Age in a classical way and are divided by the Chronological Age; Based on the same system, but more modern, are the Binet-Sazzo Scales, which are still in use today.

-Then we have the classics of WCHSLER, which to obviate the problems of the previous Scales (beyond 18 years of age they do not calculate the Mental Age well) use the novelty of offering an INTELLECTUAL DEVIATION QUOTE, since the 30s of the last century, but that are gradually being revised and updated: in children, the WISC-IV; in adults, the WAIS-IV; for preschool, the WPPSI, which can be administered between the ages of 0 and 6; for the elderly, the WAIS IV-R, which offers a "Impairment Index"

Another advantage of the WECHSLER Scales is that they offer a VERBBAL IQ, a MANIPULATIVE IQ and a GENENERAL IQ.

Dear Dr. Kenjabek Rozumbetov.

I want to take an example of loss of IQ in children, and this is that of the ecological disaster that surrounds the Aral Sea, which has an unstoppable impact on the health of the survivors of this disaster. Today women suffer from an "anemia pandemic" in this area, in the present Karakalpakstan Region for more than 10 years. The water from which they are supplied, coming from contaminated drains during the cotton exploitation, worsens the situation. The fight against diseases derived from iodine deficiency [IDD] does not tend to cease for the good of its inhabitants. It is essential for their health to maintain iodine levels, but many tend to ignore it, which is why children suffer from serious developmental problems and learning disabilities from early childhood. To regularize the situation, at least 0.15 and 0.3 milligrams of iodine per day would be needed in women so that they do not transmit this terrible deficiency to their children. When we were in Nukus with the team from the University of Naples L'Orientale, we had to continually use large containers of water transported from afar to avoid serious infections due to poor water quality, but they made our stay feel bearable and pleasant.

For more details on the consequences on the health of the population after the emptying of the Aral Sea and its consequences, you can consult the following research work on epidemiological cases in the child population residing in the vicinity of Lake Aral due to assimilation of quantities of Mercury and cadmium, which when concentrated in breast milk, cause not only a decrease in body weight in the child and early mortality, but also have delays in cognitive development if the mother eats high-fat fish:

Zetterstrom R.(1999) Child health and environmental pollution in the Aral Sea Region in Kazakhistan. Acta Paedriatrica.

https://www.academia.edu/15217059/Developing_sustainable_land_and_water_management_for_the_Aral_Sea_Basin_through_an_interdisciplinary_approach

In my country the Raven test is used yet.

Thank you very much, Dr. Francisco Javier Gala for your comment.

Thank you very much, Dr. Javad Sharifi Alireza Khoshkonesh for your comment.

Thank you very much, Dr. Juana Maria Arcelus-Ulibarrena for your comment.

My respects to you. I'm surprised to be honest, when were you in Nukus and with what fates?

Thanks to you, dear Dr.Kenjabek Rozumbetov

Dear Dr. Kenjabek Rozumbetov,

I was part of an Interdisciplinary Research of a group of Professors from the Orientale University of Naples (Italy) which departed from Rome in September 2012 with two objectives. The first objective was to explore and learn about the current situation of the Aral Sea and its inhabitants after the disastrous emptying of the Aral Sea. We stayed for 4 days and we stopped on the way where we saw cotton crops and we talked with the local people, they were always very observant, interested in our interest, friendly and hospitable (I still have a branch of the cotton plant that they people gave me). I learned a lot in this research trip, not only from my colleagues, but as an experiment and experience of life and true feelings observed in the people of these places.

The second objective (which is not related to this Question) was to know and explore the status of the excavations carried out by the Orientale University of Naples in the city of Nisa (present-day Turkmenistan).

n.b. Sorry if I was slow to answer, as soon as I find the photos I am looking for, I will add them to this question.

Excellent. You are well done dear Dr. Juana Maria Arcelus-Ulibarrena .

In 2012, I was 16 years old.

Dear Dr. Kenjabek Rozumbestov,

Thank you very much for inviting me to participate in this Discussion. The sight of the Aral Sea and the effort of "reprogramming" of its inhabitants marked me.

The most widely used intelligence tests include the Stanford-Binet Intelligence Scale and the Wechsler scales. The Stanford-Binet is the American adaptation of the original French Binet-Simon intelligence test; it was first introduced in 1916 by Lewis Terman, a psychologist at Stanford University. https://www.britannica.com/science/intelligence-test

Check https://www.healthline.com/health/iq-testing

Thank you very much, Dr. Juana Maria Arcelus-Ulibarrena for your comment.

My respects to you.

Thank you very much, Dr. Chinaza Godswill Awuchi for your comment.

Malnutrition during the early part of life (1–5 years) results not only in the delay in physical growth, motor development, and cognitive developmental disorders, but also a reduction in their IQ by 15 points.

Thank you very much, Dr. Kiprotich Kiptum for your comment.

Low-iodine regions are or, have been many, around the world. It took a long time to find out that many parts of the USA (away from the ocean) were low in iodine, because they had no access to fish and seafood.

That problem was solved only in relatively recent times by adding iodine to ordinary table salt packages.

Canadians have been making jokes about the low intelligence of some USA people that they met in their travels. This phenomenon could be linked to the low iodine intake of those people.

Thank you very much, Dr. Michael Issigonis for your comment.

"What scientific tests are used to check the IQ level of children and adults? --- Dr. Kenjabek Rozumbetov asks

It is a surprise to me to see people without any degree in psychology, namely a Ph D degree, to refer to scientific tests used to check the IQ level of children and adults. Do they know how to use these tests?

There are a lot of them, some of which were mentioned by previous posters

It is important to distinguish mental tests, which assess how much people are intelligent (e. g., the in(famous) QI) and developmental tasks or tests, which assess what type of intelligence people do have (e.g., concrete operational intelligence, formal operational intelligence).

In addition to the mental tests mentioned above, Raven's Progressive Matrices should be mentioned. This test is judged to be the most culture free mental test and there are versions for children and adults. As for developmental tests or tasks, Piagetian tasks are worth mentioned. These tasks can only be administered by highly experts in Developmental Psychology.

I hope this can be of some help for you-

Thank you very much, Dr. Orlando M Lourenço for your comment.

Dr. Kenjabek Rozumbetov,

You are welcome, It is my pleasure to participate in your thread

Thank you very much, Dr. Orlando M Lourenço

Dr. Kenjabek Rozumbetov,

I hope that what follows can be of some hep for you,

The Wason's task, which is the mental test that consists of a single item, is often used to assess children' and adults' intelligence. It is a highly demanding test. The test is based on the four classical logical arguments: Modus Ponens (If p, then q; p is the case. Hence, q has to be also the case). Modus Tollens (If p then q; not q is the case. Hence, not p has also to be the case.) Denial of the Antecendent (If p, then q; not p is the case. Hence, nothing can be concluded about q); and Affirmation of the Consequent (If p, then q; q is the case. Hence, nothing can be concluded about p). Research has shown that about 5-year olds are able to solve the Modus Ponens argument; about 9-year olds are able to solve the Modus Tollens argument; and adolescents and adults have many difficulties with solving both the Denial of the Antecendent and the Affirmation of the Consequent arguments.

Thank you very much, Dr. Orlando M Lourenço

Dr. DR Kenjabek Rozumbetov,

You are welcome again. As I have a Ph D in developmental psychology it will be my pleasure to continue to mention developmental tasks. For example, the Pendulum Problem by Jean Piaget is widely used to assess peoples' formal, abstract and deductive.hypothetical thinking,

Thank you very much, Dr. Orlando M Lourenço for your comment.

Thank you very much, Dr. Umar Ashraf

Umar Ashraf.

I may be wrong but your post does not have any attached link. I would like to get it. Could you please send it to the posters in this thread?

Thank you in advance for all of your courtesy,

Kind regards

Dr. Umar Ashraf pay attention to the comment above!

Salt iodization is one of the most effective measures to prevent iodine deficiency and health problems caused by that.

Dear all,

I performed a Google Search on the link "What Are Intelligence Tests? | MGH Clay Center for Young Healthy Minds:" I see no reference to any intelligence test. May be because I have a Ph D in Psychology, namely in Developmental Psychology, the site or the link does not say much about Intelligence Tests? I would like to know what those posters who recommended Dr. Umar Ashraf's post think about suck link.

Thank you very much, Dr. Jelena B Popović-Djordjević Orlando M Lourenço for your comment.

The Wechsler Intelligence Scale for Children is the most widely used test of intelligence for children aged 6 through 16 years

The Raven's Progressive Matrices is a mental test to assess both children's, adolescents' and adults' level of cognitive intelligence. This test is judged to be the most free culture mental test, which renders it to be appropriate to be administered all over the world. The test consists of images/figures and has no word.-

Developmental tasks, as those developed by Jean Piaget (see his Pendulum task) are used not to know how much people are intelligent (i.e. their (in) famous IQ) but what type of intelligence (i.e., sensorimotor, pre-preparatory; concrete operatory, formal operatory) children, adolescents and adults do have. Contrary to mental tests, developmental tasks, for example, a la Jean Piaget, are more free. culture than the mental tests mentioned in previous posts.

The most common types of IQ test are Stanford-Binet Intelligence Scale. Universal Nonverbal Intelligence. Differential Ability Scales. Peabody Individual Achievement Test. Wechsler Individual Achievement Test. Wechsler Adult Intelligence Scale. Woodcock-Johnson III Tests of Cognitive Disabilities.

Thank you very much, Dr. Abdullah Al-Oshoush , Orlando M Lourenço for your comment.

Thank you very much, Dr. Getasew Amogne Aynalem for your comment.

Dear Kenjabek Rozumbetov

I has been my pleasure to participate in tour thread

I don't know, but would be glad if you shared the list you compile based on the replies

I think IQ tests should never be applied to children, to not make them insecure about their potential. These tests are tough and can doom a child to failure in the school system.

Thank you very much, Dr. Orlando M Lourenço , Mathala Juliet Gupta , Jose Risomar Sousa for your comment.

Some of the most widely used IQ tests include: Wechsler Intelligence Scale for Children (WISC-V) Wechsler Intelligence Scale for Adults (WAIS) Stanford-Binet Intelligence Scale Kenjabek Rozumbetov

Hello. Doctor Shivam Maurya , could you send me these two tests (for children and adults)?

I found these test information from this website https://www.healthline.com/health/iq-testing#history Kenjabek Rozumbetov

cryptograhpy

Dear all,

Thank you very much, Dr. Mohammad Faisal for your comment.