As an expert in the field of cognitive psychology, I can provide an in-depth explanation of how IQ scores are calculated. The calculation of an IQ score is a multi-step process that involves standardized testing and the application of specific formulas.

Step 1: Administering the IQ Test
The first step in calculating an IQ score is to administer a standardized IQ test. This test is designed to measure various aspects of cognitive abilities, including problem-solving, logical reasoning, pattern recognition, and general knowledge. The test is usually administered by a qualified professional who is trained in the administration and scoring of such tests. The test may be conducted in a controlled environment to ensure that the results are as accurate as possible.

Step 2: Scoring the Test
Once the test has been administered, the next step is to score the test. This involves assigning points to each correct answer and then tallying up the total score. The scoring system is standardized, meaning that it is the same for all test-takers, regardless of their age or other demographic factors.

Step 3: Determining Mental Age (MA)
After the test has been scored, the next step is to determine the mental age (MA) of the test-taker. This is done by comparing the test-taker's performance to the performance of others in the same age group. The mental age is essentially a measure of the cognitive abilities that are typical for someone of a certain age.

**Step 4: Determining Chronological Age (CA)**
The chronological age (CA) of the test-taker is simply their actual age in years. This is a straightforward measure that does not require any calculations.

Step 5: Applying the IQ Formula
With the mental age and chronological age determined, the final step is to apply the IQ formula. The formula used to calculate the IQ score is:

\[ \text{IQ} = \frac{\text{MA}}{\text{CA}} \times 100 \]

This formula takes the mental age and divides it by the chronological age, then multiplies the result by 100 to get the IQ score.

Step 6: Interpreting the IQ Score
Once the IQ score has been calculated, it can be interpreted. An IQ score is a measure of cognitive ability relative to the average for a given age group. A score of 100 is considered average, with scores above 100 indicating above-average cognitive abilities and scores below 100 indicating below-average cognitive abilities.

It's important to note that IQ tests are just one measure of cognitive ability and should not be used as the sole determinant of a person's intelligence or potential. There are many factors that contribute to intelligence, and an IQ test only measures a subset of these.

Moreover, the reliability and validity of IQ tests have been debated, with some arguing that they are culturally biased or that they do not accurately measure all aspects of intelligence. As such, it's crucial to view an IQ score as one piece of a larger puzzle when assessing cognitive abilities.

In conclusion, calculating an IQ score involves administering a standardized test, scoring the test, determining mental and chronological ages, applying a specific formula, and interpreting the resulting score within the context of cognitive abilities. It's a complex process that requires expertise and should be conducted by qualified professionals.

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Video of the DayTake an IQ test administered by a qualified, professional proctor. ... Write down your score in the following formula: IQ=MA/CA 100, where --MA-- is your mental age and --CA-- is your chronological age. ... Divide both sides of the equation by 100.More items...read more >>