Take a practice IQ test (although not a valid or reliable me…

Take a practice IQ test (although not a valid or reliable measure of your intelligence) and read the sample report generated. Notice the adjusted score and where your score falls on the bell curve, the range and percentile score as well as the descriptor. Be sure to convert your scores to the Catell and Stanford Binet scales and notice if there are any differences. Use the link to the IQ Testing Lab provided:


Intelligence quotient (IQ) tests have long been used as a measure of intelligence, despite their limitations in fully capturing the complexities of human intellect. This assignment will explore the practice of taking an IQ test and examining the sample report generated. By analyzing various scores and comparing them to the percentile ranking on a bell curve, we can gain insight into the individualā€™s cognitive abilities. Additionally, converting these scores to the Cattell and Stanford-Binet scales may reveal any differences in the interpretation of intelligence across different assessment methods.

Analysis of the Sample Report

The sample report provided by the IQ Testing Lab presents the test-taker’s adjusted score, which accounts for age factors in relation to the general population. It is essential to consider this adjusted score rather than the raw score, as it offers a more accurate representation of the individual’s intelligence level.

Furthermore, the report displays the test-taker’s score placement on a bell curve, which provides a visual representation of where their score falls relative to the population. This placement helps determine the person’s intellectual abilities by comparing their performance to a large sample group.

The report also includes information about the range and percentile score. The range indicates the spread of scores across the population, while the percentile score determines the individual’s relative position compared to others. For instance, if someone scores in the 85th percentile, it means they performed better than 85% of the population.

In the sample report, the percentiles are accompanied by descriptors, such as “superior” or “average,” that provide a general understanding of the individual’s cognitive abilities. These descriptors classify the test-taker’s performance based on their percentile rank and serve as a quick summary of their intellectual potential.

Conversion to Cattell and Stanford-Binet Scales

The Cattell and Stanford-Binet scales are alternative methods for assessing intelligence. Converting IQ scores to these scales can reveal any variations in the interpretation of intelligence across different assessments.

The Cattell scale places emphasis on fluid intelligence, which refers to the ability to reason and solve problems independent of acquired knowledge. This scale typically ranges from 0 to 160, with 100 considered average. By converting the IQ score, the Cattell scale provides a different perspective on the individual’s cognitive abilities and may highlight their fluid intelligence capacity.

On the other hand, the Stanford-Binet scale primarily focuses on both fluid and crystallized intelligence. Crystallized intelligence involves learned knowledge and skills acquired through experiences and education. The Stanford-Binet scale ranges from 40 to 160, with 100 still representing the average. By converting the IQ score to the Stanford-Binet scale, the assessment takes into account both acquired knowledge and problem-solving abilities.

Comparing the converted scores to the original IQ score provides insights into the individual’s relative strengths and weaknesses in different cognitive domains. For example, if the converted Cattell score is significantly higher than the original IQ score, it suggests the person excels in fluid intelligence tasks. Conversely, if the converted Stanford-Binet score surpasses the IQ score, it implies a strength in crystallized intelligence.


In conclusion, taking an IQ test and examining the sample report provides valuable insights into an individual’s intelligence level and cognitive abilities. Factors such as adjusted scores, bell curve placement, percentile ranking, and descriptors offer a comprehensive understanding of the person’s cognitive potential. Moreover, the conversion to Cattell and Stanford-Binet scales allows for a comparison of different aspects of intelligence, providing a more nuanced interpretation. It is important to remember that while IQ tests can provide some insight into cognitive abilities, they should not be taken as the sole measure of a person’s intelligence.