Online IQ Reliability

I’ve taken a few online IQ tests and always get different results. I’m curious about how these online tests compare to those administered by professionals. Are they reliable? Do they measure the same aspects of intelligence?

How much should I trust the results from an online test if I’m considering it for something serious?
https://realiqtestonline.com/

APA

Online IQ tests can vary significantly in terms of reliability and validity compared to professionally administered tests. Here are some key differences and considerations:

Reliability and Validity: Professional IQ tests, such as those administered by psychologists (e.g., the Wechsler Adult Intelligence Scale (WAIS) or the Stanford-Binet Intelligence Scales), are rigorously tested for reliability (consistency of results) and validity (accuracy in measuring what they claim to measure). They follow strict protocols and are administered in controlled environments. Online tests often lack this level of rigor, and their results can be less reliable.
Standardization: Professional tests are standardized, meaning they are administered and scored in a consistent way across different individuals, which helps ensure fair and accurate comparisons. Many online tests are not standardized and may not have been tested on diverse populations, which can affect their accuracy.
Test Content: Professional IQ tests are designed to measure a broad range of cognitive abilities, including verbal comprehension, working memory, perceptual reasoning, and processing speed. Online tests may not cover all these areas comprehensively or might focus on specific types of…

Online IQ tests can vary significantly in terms of reliability and validity compared to professionally administered tests. Here are some key differences and considerations:

Reliability and Validity: Professional IQ tests, such as those administered by psychologists (e.g., the Wechsler Adult Intelligence Scale (WAIS) or the Stanford-Binet Intelligence Scales), are rigorously tested for reliability (consistency of results) and validity (accuracy in measuring what they claim to measure). They follow strict protocols and are administered in controlled environments. Online tests often lack this level of rigor, and their results can be less reliable.
Standardization: Professional tests are standardized, meaning they are administered and scored in a consistent way across different individuals, which helps ensure fair and accurate comparisons. Many online tests are not standardized and may not have been tested on diverse populations, which can affect their accuracy.
Test Content: Professional IQ tests are designed to measure a broad range of cognitive abilities, including verbal comprehension, working memory, perceptual reasoning, and processing speed. Online tests may not cover all these areas comprehensively or might focus on specific types of…