David%20Wechsler's%20Intelligence%20Scale%20Jesse%20Jones%20Arith%20Wijesinha%20Jack%20Brown%20Troy%20Nicholson

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David Wechsler'sIntelligence ScaleJesse
JonesArith WijesinhaJack BrownTroy Nicholson
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Who was Wecshler?

• David Wechsler (January 12, 1896 May 2, 1981)
  was a leading American psychologist. He developed
  well-known intelligence scales, such as the
  Wechsler Adult Intelligence Scale and the
  Wechsler Intelligence Scale for Children. His
  theory of intelligence was unique compared to
  others.

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His Theory

• David Wechslers viewed intelligence as the
  "global and aggregate capacity to act
  purposefully, to think rationally and to deal
  effectively with the environment." Wechlers
  proposed that intelligence involves a greater
  range of mental abilities, mental abilities that
  were not only relevant to school but also to
  everyday life, he categorized these abilities in
  two types verbal and performance abilities

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Verbal Abilities

• Wechslers described verbal verbal abilities as
  those that are entirely language dependent such
  as vocabulary and comprehension. These people
  generally end up in a career involving language
  and persuasive techniques such as politics
  journalism.

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Performance Abilities

• He described performance abilities as those less
  dependent on language. For example using images
  to tell stories and using patterns. This specific
  type of intelligence enables intelligence to be
  expressed In a way that is not entirely dependent
  on the use of verbal skills and also involves
  physical attributes to show intelligence.

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The 4 Components

• Wecshler believed that both verbal and
  performance abilities are important components of
  intelligence and there are different ways in
  which intelligence can be expressed. This
  specific view is reflected in his intelligence
  test which contains both tests of verbal and
  performance abilities. Wecshler also suggested
  four other that behaviors should be present for
  any behavior to be described as intelligent.

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The 4 Questions

• Awareness - the behavior must be intentional and
  you must have awareness of its consequences.
• Goal Directed - the behavior must have a specific
  goal.
• Rational - the behavior must be appropriate in
  achieving your goal.
• Worthwhile - the action must be worthwhile or
  have been valuable to the goal,

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Testing Intelligence

• There are 4 areas in which Wecshler tested to try
  and prove his theory of intelligence.
• __________
• Verbal
• Working Memory
• Perceptual Reasoning
• Processing Speed
• __________
• Wechslers 'Verbal' and 'Working Memory' focus on
  his verbal type of intelligence whilst his
  'Perceptual Reasoning' and 'Processing Speed'
  tests are aimed at the performance side.

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Verbal Testing

• Wechslers verbal category of his testing contains
  3 different tests.
• Information a series of orally presented
  questions that aims at the subjects knowledge of
  common events, objects places and people.
• Similarities questions requiring the subject to
  identify the similarities and differences between
  two or more objects.
• Vocabulary questions that ask the subject for
  definitions of words which is designed to assess
  ability to learn, understand and use vocabulary.

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Perceptual Reasoning Testing

• Wechslers perceptual reasoning category of his
  testing contains 3 different tests.
• Block Design Consists of colored blocks which
  are put together assessed and matched up with the
  example given to the subject.
• Matrix Reasoning Consists of a series of
  incomplete designs or patterns. The subject must
  choose the complete design from a series of
  patterns given. This is designed to test spacial
  awareness and reasoning.
• Visual Puzzles selection of three puzzle pieces
  from a series of 6 that when combined form a
  complete puzzle that matches the example given.

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Working Memory Testing

• Wechslers working memory category of his testing
  contains 2 different tests.
• Digit Design Orally presented sequences of
  numbers that are to be orally repeated, forwards
  and backwards from memory.
• Arithmetic Mental arithmetic problems that are
  presented and solved orally. Designed to assess
  abilities to reason using arithmetic.

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Processing Speed Testing

• Wechslers working memory category of his testing
  contains 2 different tests.
• Digit Design Orally presented sequences of
  numbers that are to be orally repeated, forwards
  and backwards from memory.
• Arithmetic Mental arithmetic problems that are
  presented and solved orally. Designed to assess
  abilities to reason using arithmetic.