1. The Origins of Intelligence Testing

2. Origins of Intelligence Testing
Alfred Binet
Attempted to predict school achievement
Need for standardized test
Developed concept of Mental Age

3. Origins of Intelligence Testing
Lewis Terman
Interpreted Binet’s exam as a measure of innate intelligence
“The children of successful and cultured parents test higher than children form wretched and ignorant homes for the simple reason that their heredity is better”
Lewis Terman 1916

4. Origins of Intelligence Testing
Stanford-Binet
the widely used American revision of Binet’s original intelligence test
Used to assess immigrants and World War I army recruits
Intelligence Quotient (IQ)
defined originally the ratio of mental age (ma) to chronological age (ca) multiplied by 100
IQ = ma/ca x 100
on contemporary tests, the average performance for a given age is assigned a score of 100
What do intelligence test questions look like?

5. Pattern Recognition 5. Which of the diagrams follows?
Correct answer: A Explanation: All the characters are letters back to back (C,D,E,F)

6. Pattern Recognition
2. Find the picture that follows logically from the diagrams to the right.
Correct answer: C

7. Pattern Recognition
Please find the figure continuing the series:
                                                    

8. Verbal 2. Find the answer that best completes the analogy
people : democracy :: wealthy :
A. oligarchy B. oligopoly C. plutocracy D. timocracy E. autocracy
Correct answer: plutocracy

9. Verbal
. Rearrange the following letters to make a word and choose the category in which it fits.
RAPETEKA
A. city B. fruit C. bird D. vegetable
Correct answer: bird (parakeet)

10. Verbal
4. Which one of the sets of letters below can be arranged into a five letter English word. A. atrun B. podeb C. rnasl D. mohat E. etlrn
Correct answer: rnasl (snarl)

11. Verbal
2. If you rearrange the letters "BARBIT", you would have the name of a: OCEAN - COUNTRY - STATE - CITY - ANIMAL 
Correct Answer: Animal (Rabbit) 

12. Verbal
The word "smart" can be created using five letters from the word "barnstorm".
Correct answer: true

13. Logic
30 years ago it took a worker five hours to make a chair. Today it takes him just 30 minutes.
a) Man has become more industrious.
b) People work faster in order to avoid unemployment.
c) Chairs have a shorter life cycle.
d) Workers have more spare time.
e) Productivity has increased.
Correct answer: E

14. Logic Drinking and Driving causes many accidents.
a) People drink too much alcohol.
b) People should not drive when over the legal limit.
c) There is a 20 per cent chance of causing an accident by drunken driving.
d) Alcohol diminishes driving skills.
e) The police should carry out more breathanalysing tests.
Correct answer: D

15. Logic
If all Boogles are Battuns, and some Battuns are Trandles, all Trandles must be Boogles
Correct answer: False

16. Logic
If a tree branch can hold three people and John weighs twice as much as Adam, and Rachel weighs half as much as Adam, then Rachel, John and Adam can all sit together on the tree branch safely.
Correct answer: True

17. Logic
2. The day before the day before yesterday is three days after Saturday. What day is it today? A. Monday B. Tuesday C. Wednesday D. Thursday E. Friday
Correct answer: E

18. Logic 5. 165135 is to peace as 1215225 is to
A. lead B. love C. loop D. castle
Correct answer: love

19. Logic 6. Library is to book as book is to Binding Copy Page Cover
A. page B. copy C. binding D. cover
Correct answer: page

20. Math 6. What is the missing letter?
Correct answer: H Explanation: Convert each letter to its numerical equivalent in the alphabet e.g. the letter "C" is assigned the number "3". Afterwards, for each row, multiply the numerical equivalents of the first two columns in order to calculate the letter in the third column. E C O B A G N D ?

21. Math . Which number should come next in this series? 25,24,22,19,15
A. 4 B. 5 C. 10 D. 14
Correct answer: C Explanation: The pattern decreases progressively: -1, -2, -3, -4, -5

22. Math 2. Which number should come next in this series? 3,5,8,13,21,
A. 4 B. 21 C. 31 D. 34
Correct answer: D Explanation: 3+5=8, 5+8=13 and so on.

23. Classification
1. Which one of the five is least like the other four? BEAR - SNAKE - COW - DOG - TIGER 
Correct answer: Snake 

24. Classification
3. Which one of the five is least like the other four? POTATO - CORN - APPLE - CARROT - BEAN  
Correct answer Apple

25. Spatial 1. Which diagram results from folding the diagram on the left?
Correct answer: A
                                                                                                                          
Correct answer: A

26. Spatial
3.  Which one of the Rubik's cube below can be part of the sequence?
Correct answer: C
                A B C D

27. Visual
2. Which figure is the odd one out?
Correct answer: D

28. Visual 4.Which of the following figures is the odd one out?
Correct answer: C

29. Assessing Intelligence
Modern Tests of Mental Abilities
Aptitude Test
a test designed to predict a person’s future performance
aptitude is the capacity to learn
Achievement Test
a test designed to assess what a person has learned

30. Assessing Intelligence
Wechsler Adult Intelligence Scale (WAIS)
most widely used intelligence test
subtests
verbal
performance (nonverbal)

31. Assessing Intelligence: Sample Items from the WAIS
From Thorndike and Hagen, 1977
VERBAL
General Information
Similarities
Arithmetic Reasoning
Vocabulary
Comprehension
Digit Span
PERFORMANCE
Picture Completion
Picture Arrangement
Block Design
Object Assembly
Digit-Symbol Substitution

32. Assessing Intelligence
Principles of Test Construction
Standardization
defining meaningful scores by comparison with the performance of a pre-tested “standardization group”
Normal Curve
the symmetrical bell-shaped curve that describes the distribution of many physical and psychological attributes
most scores fall near the average, and fewer and fewer scores lie near the extremes

33. The Normal Curve

34. Assessing Intelligence
The Flynn Effect
Tests are often restandardized to keep the average score near 100
Intelligence test performance has been improving
The average person’s intelligence test score 80 years ago by today’s standards would be a 76
Causes are unknown

35. Assessing Intelligence
Reliability
the extent to which a test yields consistent results
assessed by consistency of scores on:
Test/retest
Split-half

36. Assessing Intelligence
Validity
the extent to which a test measures or predicts what it is supposed to
Content Validity
Does the test measure what it is supposed to measure?
ex: driving test that samples driving tasks
Criterion
behavior (such as college grades) that a test (such as the SAT) is designed to predict
the measure used in defining whether the test has predictive validity

37. The Dynamics of Intelligence
Mental Retardation
a condition of limited mental ability
indicated by an intelligence score below 70
produces difficulty in adapting to the demands of life
varies from mild to profound
Down Syndrome
retardation and associated physical disorders caused by an extra chromosome in one’s genetic makeup

38. The Dynamics of Intelligence