Question 1

Paulo has an IQ of 130 and is 10 years old. According to Stern's IQ formula, what is Paulo's mental age?

Accepted Answer

Stern's IQ formula is IQ = (Mental Age / Chronological Age) * 100. Solving for Mental Age gives Mental Age = (IQ / 100) * Chronological Age. For Paulo, Mental Age = (130 / 100) * 10 = 13.

Question 2

Sally has an IQ of 140 and a mental age of 14. According to Stern's IQ formula, how old is Sally?

Accepted Answer

The answer of Sally has an IQ of 140 and...

Question 3

The concept of mental age is not really used in modern tests of intelligence. Why is this the case?

Accepted Answer

Mental age is more applicable to children as it compares their performance to average age norms, but it becomes less meaningful for adults where intelligence is more stable and not age-dependent.

Question 4

You have designed a new intelligence test and want to make sure that it is a good test. So, you have a group of people take the test in September and then the same group takes the test in December. You want to see if the scores are similar. You are testing for

Accepted Answer

You are testing for reliability, specifically test-retest reliability, which measures the consistency of test scores over time.

Question 5

You have designed a new intelligence test and want to make sure that it is a good test. You can assess and correct a number of problems, but you will never be able to achieve perfect

Accepted Answer

Construct validity is difficult to achieve perfectly because it involves ensuring that the test truly measures the theoretical construct it is intended to measure, which is inherently complex and abstract.

Question 6

Which of the following is FALSE according to Cattell's theory of fluid and crystallized intelligence?

Accepted Answer

Cattell's theory suggests that fluid intelligence tends to decline with age, while crystallized intelligence can improve or remain stable, indicating a difference across the lifespan.

Question 7

You have designed a new intelligence test and want to make sure that it is a good test. So, you have a group of students take the test and then have a number of observers score the tests. You want to see if the scores of the observers are similar. You are testing for

Accepted Answer

Interjudge reliability refers to the degree to which different observers or judges agree in their scoring or assessment, which is what is being tested when multiple observers score the tests.

Question 8

Let's say that you give a number of students a test of math ability, a test of reading comprehension, and a test of verbal fluency. You run a factor analysis and note that all three tests seem to be highly positively correlated with each other. Which of the
Following theories of intelligence would this support?

Accepted Answer

The high positive correlation among different cognitive tests supports Spearman's g factor theory, which posits a general intelligence factor underlying all cognitive abilities.

Question 9

As you administer an intelligence test to a fifth-grader, you suspect that she has much more ability than she can show on the test. Which of the following might give you a better idea of she is capable of?

Accepted Answer

Dynamic testing involves an interactive approach where the examiner provides feedback and observes how the student learns and applies new information, which can reveal the student's potential beyond what is shown in a standard test.

Question 10

You are worried that as your grandparents grow older, they may lose some of their intellectual abilities. While this may happen, research indicates that you should be most concerned about loss of

Accepted Answer

Fluid intelligence tends to decline with age, as it involves the ability to reason and solve novel problems, which can be affected by aging.

Question 11

The company you work for wants to test potential new employees for their ability to go beyond prior learning and demonstrate future potential. Which of the following types of test would you recommend to them?

Accepted Answer

An aptitude test is designed to assess a person's ability to learn or develop skills in the future, making it suitable for evaluating future potential beyond prior learning.

Question 12

Let's say that you designed an intelligence test over 30 years ago and normed it to a mean of 100. However, you note that the mean today is about 130 and, consequently, you need to recalibrate. Your test is reflecting

Accepted Answer

The Flynn effect refers to the observed rise in average IQ scores over time, which is why the mean has increased from 100 to 130.

Question 13

Professor Randall has created a new test of intelligence, but when looking at the criterion-related validity, the test seems to work well for women, but not for men. Randall's test suffers from

Accepted Answer

Predictive bias occurs when a test predicts outcomes differently for different groups, in this case, working well for women but not for men.

Question 14

Let's say that you give a number of students a test of math ability, a test of reading comprehension, and a test of verbal fluency. You run a factor analysis and note that all three tests seem to be only slightly positively correlated with each other. Which of the following theories of intelligence would this support?

Accepted Answer

Thurstone's primary mental abilities theory suggests that intelligence is composed of several distinct abilities, which aligns with the observation of only slight positive correlations among the tests.

Question 15

You have designed a new intelligence test and want to make sure that it is a good test. So, you look over the scales and realize that you have forgotten to test for an important dimension of intelligence. If you do not correct this, your test will have low

Accepted Answer

Content validity refers to the extent to which a test measures all aspects of the concept it intends to measure. If an important dimension is missing, the test lacks content validity.

Question 16

You have designed a new intelligence test and want to make sure that it is a good test. So, you have a group of students take the test and then you look to see if all of the individual items are highly correlated. You are testing for

Accepted Answer

Internal consistency refers to the degree to which different items on a test measure the same construct or concept, which is assessed by examining the correlations between individual test items.

Question 17

Josh is 10 years old and has a mental age of 12. Using Stern's IQ formula, what is Josh's IQ?

Accepted Answer

Stern's IQ formula is (Mental Age / Chronological Age) x 100. For Josh, it is (12 / 10) x 100 = 120.

Question 18

Many researchers believe that intelligence is related to neural efficiency. Which of the following does NOT provide support for this suggestion?

Accepted Answer

Glucose consumption increasing in people who score high on intelligence tests contradicts the idea of neural efficiency, which suggests that more intelligent individuals use less energy (glucose) for cognitive tasks.

Question 19

You have designed a new intelligence test and want to make sure that it is a good test. So, you have a group of students take the test and then have a number of their professors rate them as high or low in intelligence. You want to see if the scores are similar. You are testing for

Accepted Answer

Criterion-related validity is the degree to which a test correlates with an external criterion, such as a professor's rating of intelligence.

Question 20

The company you work for wants to test potential new employees for their degree if prior knowledge in the field. Which of the following types of test would you recommend to them?

Accepted Answer

An achievement test is designed to assess a person's knowledge and skills in a specific area, making it suitable for evaluating prior knowledge in a field.

Quiz 10: Intelligence