Intelligence Test Network-International Standard IQ Test)- Is the IQ measured by this website scientifically credible?

There are many IQ tests, from free online tests to copyright-free tests, and then to copyrighted tests that require you to buy an answer sheet every time you do a test. Generally speaking, the accuracy (reliability and validity) of online testing is very low. Besides the accuracy of the test itself, there are two important factors that determine the value of the test:

1. Test the quality of standard data (standard data). When developing or updating the test, the research institution will randomly select samples for the subjects. The scores of these subjects are the reference indicators of our IQ. IQ is a relative concept, which is the level of your IQ relative to people of the same age (or similar age). Without these reference indicators, randomly divided intervals are worthless.

As far as the quality of normative data is concerned, copyright-free tests are usually worse than those that require payment. The reason is simple, research needs a lot of money, and this research is a continuous process. Flynn effect points out that with the popularization of education, citizens' IQ scores will increase by a few points every few years on average. Therefore, it is necessary to update the topic frequently, adjust the average value and so on. Without copyright inspection, due to the lack of funds, manpower and material resources, normative data are often not updated for more than 10 or even more than 20 years. Therefore, the value of test results is limited.

The test of normative data is also frequently updated, and the criteria for comparing the advantages and disadvantages of the test need to be referred to: the localization of the test (for example, Australia is also an English-speaking country, and the test in the United States needs to be localized, and the sample is more accurate with Australians as subjects), the sample size (the more subjects, the better), and the sample age difference (children may change obviously every six months due to their rapid intellectual development, so the sample is the best. This will make the final result more sensitive). Excellent tests will also provide standardized data for special people, such as autistic patients and ADHD patients.

2. Training level of testers.

Testing others requires a series of training, such as the placement of objects, the intensity of lighting, giving appropriate instructions, the speed of speaking, and the ability to deal with various situations (especially when testing children or special people). If the test cannot be carried out according to the standardized procedure, it will artificially introduce errors and affect the results. Once this happens unfortunately or there are other situations that affect the results (for example, a group of tests should be completed on the same day, but the child insists on not completing the IQ test on the same day), it is necessary to record the specific situation and consider it when analyzing the test results. Of course, even if there are no special circumstances, it is necessary to record the way the candidates answer questions, the reaction and so on. Sometimes this information is more valuable than the exam itself.

It is not difficult to learn the correct way to do the test. Besides psychologists, some psychological counselors and senior teachers also do IQ tests. The real difficulty lies in applying the knowledge of neuropsychology and understanding the background information of the subjects, analyzing the data and drawing conclusions.

The significance of IQ score

Taking Wechsler Adult Intelligence Scale as an example, the test is divided into four parts:

Speech synthesis (language ability; The translation of these words is inaccurate.

Perceptual reasoning (spatial thinking ability)

Working memory (working memory, relative to computer, should be cached)

Processing speed (processing speed, similar to CPU) What we usually call comprehensive IQ.

Although it is a number, it should actually be a 95% confidence interval. If a person's IQ is 1 10, it is assumed that there is a 95% probability that his true IQ is between 105 and16 (according to experience, the interval of Wechsler test is generally between 8 and 15). In other words, this person's actual IQ is likely to span two partitions (every 15 is an interval, so 105- 1 16 should span two partitions from average to above average). So there is no actual difference between IQ score and IQ score.

In addition, when these four abilities are too different (for example, people with serious liberal arts majors), the number of full-dimensional IQ (face IQ test) loses its meaning and cannot represent a person's IQ level (here is IQ level, not intelligence level). The book WAIS-IV Assessment Essentials provides a formula to replace the full scale IQ, but few people do it in practical application, because it is of little value, so it is better to directly refer to the individual scores of these four abilities.

Unless there are special requirements (for example, the IQ score is lower than 70, and the government gives subsidies), it is generally not recommended to measure IQ by IQ test alone. Some psychologists, out of responsibility for visitors, don't take such jobs. The reason for this is the following：

The IQ score is not equal to the intelligence level, but only one of the reference materials, and as I mentioned above, this figure is often invalid.

Such a score is probably equivalent to labeling yourself. For those who don't know much about neuropsychological assessment, it is easy to misread this information. For example, some parents and teachers just want to know their children's IQ without listening to other explanations. If that's the case, I probably won't tell them this figure at all, just a rough range (some countries even have such regulations, only giving the range, not giving specific figures). The harm of labels is obvious. Put this label on your behavior, and use it to explain many situations that have nothing to do with intelligence, and so on.

To fully understand one's intellectual ability, one needs to do a series of tests, including IQ, memory, attention and executive function (in neuropsychology, executive function includes various high-end cognitive programs for regulating, controlling and managing other cognitive processes, such as planning, problem-solving ability, self-control, flexibility, starting and monitoring one's own behavior. For the selection of these tests, please refer to the selection criteria of IQ tests in the first part. In practical application, psychologists will also consider the consistency and focus of the test.

IQ is not equal to intelligence, let alone achievement.

Intelligent testing has advantages and disadvantages. The IQ score is just a data point, which has obvious limitations. Memory test, attention test, executive function test, previous education level, academic performance, preoperative function test, etc. , each representing a data point. Only by putting many data points together can we have a more comprehensive understanding of a person's intelligence level. How to understand these data points requires psychologists to sort out according to the knowledge they have learned and the background of the subjects.