Unit 5 (pt. 2): Slideshows Flashcards

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1
Q

What is an intelligence test?

A

A method for assessing an individual’s mental aptitudes and comparing them with those of others, using numerical scores

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2
Q

What is the difference between an achievement test and an aptitude test?

A

Achievement test - exams covering what you have learned
Aptitude test - Predicts your success in the future

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3
Q

How were individual differences in mental abilities historically researched

A

Francis Galton devised methods to measure “intellectual strengths”, based on such things as reaction time, sensory acuity, and muscular power, and body proportions. However, his quest for a simple intelligence failed.

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4
Q

How did Alfred Binet contribute to the field?

A

Alfred Binet designed fair and unbiased intelligence test for children

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5
Q

What was Binet’s assumption about intellectual development

A

He assumed that all children follow the same course of intellectual development, but some develop more rapidly.

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6
Q

Dull vs. Bright child

A

A dull child would score like that of a typical younger child and a bright child would score more like a typical older child

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7
Q

What did Binet’s test mesure?

A

Mental age, or the level of performance typically associated with a certain chronological age.

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8
Q

How were Binet’s tests modified? (and by who?)

A

The tests were modified by Lewis Terman, who extended the test’s range from teenagers to adults. His test today is called the Stanford-Binet test

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9
Q

What is the normal curve?

A

The bell-shape pattern that test-taker’s scores usually form

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10
Q

What is the intelligence quotient (IQ) and how was it derived?

A

A person’s mental age divided by their chronological age. Derived by William Stern

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11
Q

What are the limits of IQ calculating

A

It works fairly well for children, but not for adults.

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12
Q

Eugenics

A

Movement that proposed measuring human traits and using results to encourage only smart and fit people to reproduce. Was frequently based off race and class perceptions.

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13
Q

What intelligence test did David Wechsler design?

A

The Wechsler Adult Intelligence Scale, which is now the most widely used intelligence test

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14
Q

What information does a WAIS provide?

A

An overall intelligence score as well as individual scores for verbal comprehension, perceptual organization, working memory, and processing speed.

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15
Q

Standadized

A

To make scores meaningful they are compared to a pretested sample population

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16
Q

Reliable

A

The test gives consistent score no matter who takes it or when they take the test

17
Q

Valid

A

The test measures or predicts what it is supposed to.

18
Q

Content validity vs. Predictive validity

A

Content validity - The extent to which a test samples the behavior that is of interest (ex - driving test tests your driving skills)
Predictive validity - The success with which a test predicts a behavior it is designed to predict (ex - academic aptitude test predicts how well you do in school)

19
Q

What is the Flynn effect?

A

Intelligence test performance’s improvement over time. For example, if the average person in 1920 took an IQ standardized to today’s times, it would be 76.

20
Q

How is reliability determined? (3 ways)

A
  1. Split-half: Scores on two halves of the test are compared
  2. Alternative form: Varying versions of the tests are given and their results are compared
  3. Test-retest: The same test is readministered and results are compared

If there is a high correlation between the two scores than the higher the test’s reliability

21
Q

What is the correlation between brain size and intelligence

A

About +.40

22
Q

What can you tell about intelligence by looking at the brain

A

Intelligence depends on the amount of gray matter
Gray matter concentrations matter as well

23
Q

What decreases with age?

A

Brain size
Scores on verbal intelligence

24
Q

Cross sectional studies

A

From “one point in time”. People in various ages are tested

25
Q

Longitudinal studies

A

Same group of people tested over the years

26
Q

Benefits of a high intelligence score

A
  • Perceive stimuli faster
  • Retrieve information from memory faster
  • Faster brain response times