Question 1

Laura is 8; her performance on a series of tasks is equivalent to that of the average 10-year-old. Her intelligence quotient is:

Accepted Answer

The answer of Laura is 8; her performance on a...

Question 2

Which statement best expresses the relationship between a test's reliability is and its validity.

Accepted Answer

Reliability refers to the consistency of a test's results, while validity refers to the accuracy of what the test is supposed to measure. A test must be reliable to be valid, because if it does not consistently measure what it is supposed to, it cannot accurately measure it. However, a test can be reliable without being valid, meaning it consistently measures something, but not necessarily what it is intended to measure. Therefore, reliability is a necessary condition for validity, but not a sufficient one.

Question 3

Which of the following is an aptitude, rather than an intelligence, test

Accepted Answer

The GRE (Graduate Record Examination) is considered an aptitude test, designed to measure a student's readiness for graduate-level academic work, focusing on skills such as verbal reasoning, quantitative reasoning, and analytical writing. In contrast, the WISC (Wechsler Intelligence Scale for Children), WAIS (Wechsler Adult Intelligence Scale), and Raven's Progressive Matrices are all intelligence tests, designed to measure intellectual ability and cognitive skills.

Question 4

According to your text, WAIS scores correlate highly with scores on other IQ tests, such as the Stanford-Binet, as well as with college grades and measures of work success. These correlations most clearly support the WAIS's:

Accepted Answer

The high correlation of WAIS scores with other IQ tests and real-world outcomes like college grades and work success supports its validity, indicating that the test measures what it is intended to measure.

Question 5

Intelligence is positively related to:

Accepted Answer

Intelligence has been found to correlate with various structural aspects of the brain, including the number of neurons, the thickness of the cortex, and the overall volume of the brain. Studies using neuroimaging techniques have shown that these factors can be associated with cognitive abilities, suggesting a complex relationship between brain structure and intelligence.

Question 6

Imagine that the average 6-year-old can complete a particular block design puzzle in 5 minutes. It takes Bailey, who is 6 years old, 8 minutes to complete the task. In Binet's terms, Bailey's ________ age is ________ than 6; his IQ is thus ________ than 100.

Accepted Answer

Bailey's mental age is considered lower than 6 because it takes him longer than the average 6-year-old to complete the puzzle. Since IQ is calculated based on the ratio of mental age to chronological age, his IQ would be less than 100.

Question 7

Aptitude tests include each of the following EXCEPT the:

Accepted Answer

The WISC (Wechsler Intelligence Scale for Children) is an intelligence test, not an aptitude test.

Question 8

The formula for the intelligence quotient as Binet defined it is:

Accepted Answer

The formula for the intelligence quotient (IQ) as originally defined by Alfred Binet is Mental Age (MA) divided by Chronological Age (CA) multiplied by 100, which is represented as MA/CA x 100.

Question 9

Contemporary tests of intelligence in widespread use in the United States include each of the following EXCEPT the:

Accepted Answer

The Spearman G Scale is not a contemporary test of intelligence widely used in the United States. The WISC-IV, WAIS-IV, and Stanford-Binet Intelligence Scale are all current intelligence tests in use.

Question 10

For which WAIS dimension should scores show the lowest correlation with scores on a measure of Spearman's g

Accepted Answer

The answer of For which WAIS dimension should scores show...

Question 11

A psychological test is said to be standardized to the extent that it:

Accepted Answer

Standardization of a psychological test involves using a representative sample to establish norms, which are then used to interpret individual scores. This process ensures that the test results are meaningful and comparable across different individuals who are part of the target population for whom the test is designed.

Question 12

Based on your text's discussion of the Flynn effect, how might the IQ of the average 18-year-old today compare with that of her counterpart 60 years ago

Accepted Answer

The Flynn effect refers to the observed rise in IQ scores over time, suggesting that the average IQ of the population increases from one generation to the next. Therefore, the average 18-year-old today would likely have a higher IQ score compared to their counterpart from 60 years ago.

Question 13

Which of the following alternatives best expresses the distinction between the WAIS and WISC

Accepted Answer

The WAIS (Wechsler Adult Intelligence Scale) is designed for testing the intelligence of adults, while the WISC (Wechsler Intelligence Scale for Children) is specifically for assessing the intelligence of children.

Question 14

The WAIS yields scores on each of the following dimensions EXCEPT:

Accepted Answer

The WAIS (Wechsler Adult Intelligence Scale) does not measure divergent thinking directly. It assesses processing speed, working memory, and verbal intelligence among other cognitive abilities. Divergent thinking is more related to creativity and generating multiple solutions to a problem, which is not a direct focus of the WAIS.

Question 15

The correlation between SAT scores and scores on standard measures of intelligence is approximately _______. This coefficient supports the SAT's _______.

Accepted Answer

The correlation of approximately 0.70 between SAT scores and intelligence measures supports the SAT's validity, indicating it is a good measure of the construct it aims to assess.

Question 16

The Flynn Effect refers to:

Accepted Answer

The Flynn Effect describes the observed rise in average IQ scores around the world over time, suggesting that intelligence scores have been improving across generations.

Question 17

The most commonly used IQ test in the United States is the:

Accepted Answer

The Wechsler Adult Intelligence Scale (WAIS) is the most commonly used IQ test in the United States, widely recognized and utilized for its comprehensive assessment of adult intelligence.

Question 18

An online intelligence test yields a different IQ each time you take it. The test is:

Accepted Answer

The fact that the test yields a different IQ score each time it is taken shows that it is not reliable. Additionally, because IQ tests are generally supposed to be stable measures of intelligence, the inconsistent scores suggest that the test is likely not valid either. Therefore, the best answer is B, which states that the test is not reliable and probably not valid either.

Question 19

The fact that SAT scores are correlated with measures of intelligence supports the _____ of the SAT

Accepted Answer

The correlation between SAT scores and measures of intelligence supports the validity of the SAT, indicating that it measures what it is intended to measure, which in this case is a form of academic or cognitive ability.

Question 20

The pattern of scores usually observed in a variable that clusters around its average is known as a

Accepted Answer

The bell curve, also known as a normal distribution, describes the pattern of scores typically observed in a variable where most scores cluster around the average (mean), with fewer scores lying at the extremes.

Quiz 9: Intelligence and Language