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The Cognitive Level of Analysis

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Title: Introduction to Cognitive Psychology Author: Cognitive Science Last modified by: TheFreemans Created Date: 5/17/2003 11:13:56 PM Document presentation format – PowerPoint PPT presentation

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Title: The Cognitive Level of Analysis


1
The Cognitive Level of Analysis
2
Objective 1.2Explain how principles that define
the cognitive level of analysis
3
Principles that define the cognitive level of
analysis
  • 1. Our physiological processes (such as the
    physical brain, neurotransmission, etc.) give
    rise to cognitive processes (such as language,
    memory, decision making, perception, learning,
    etc.)
  • 2. Models of mental processes can be proposed and
    investigated scientifically
  • 3. Cognitive processes are influenced by social
    and cultural factors

4
1. Our physiological processes give rise to
cognitive processes.
5
1. Our physiological processes give rise to
cognitive processes.
  • In other words, specific parts of the brain can
    directly correlate to cognitive processes.
  • Damage to the frontal lobe can directly affect
    the cognitive process of decision making

6
1. Our physiological processes give rise to
cognitive processes.
  • Damage to the hippocampus can directly affect the
    cognitive process of short term memory

7
1. Our physiological processes give rise to
cognitive processes.
  • Damage to Brocas area can directly affect the
    cognitive process of language production

8
1. Our physiological processes give rise to
cognitive processes.
  • All of our mental processes are physiologically
    based. Thus, we can better understand cognitive
    processes by understanding the physiological
    processes that give rise to cognitive processes.
  • Thus, this principle may be demonstrated in
    research by observing how deficits in cognitive
    processes correlate to specific physiological
    processes.

9
2. Models of mental processes can be proposed and
investigated scientifically
  • Cognitive processes are difficult to study. They
    often occur rapidly, and inside the mind so they
    cannot be observed directly.
  • It is only the responses that participants make
    when given some cognitive task to perform that
    can tell us about cognitive processes.
  • These tasks usually take place under tightly
    controlled lab experiments where the main aim is
    to isolate a particular component of the
    cognitive process for the study. (This can be
    used to assist you with objective 1.2)

10
1. Our physiological processes give rise to
cognitive processes.
  • Ethically, since we cannot create these lesions
    in humans, we must either create lesions with
    animal models or study cases of the specific
    lesion.
  • One specific case example is the case of Clive
    Wearing
  • Watch for yourself!
  • http//www.milkandcookies.com/link/63520/detail/

11
1. How the study demonstrates the principle
  • By studying the physiological origins of
    cognitive processes, we are able to conclude that
    specific processes (in this example The
    Hippocampus) directly effect the cognitive
    process of memory.

12
2. Models of mental processes can be proposed
(through theory) and investigated scientifically
(through lab experiments)
  • By creating models of cognitive processes, we are
    able to isolate theses processes (through
    laboratory experiments) to see how various
    environmental factors influence them.
  • In summation, models of cognitive theories allow
    us to empirically investigate the cognitive
    products of our physiological processes.

13
2. Models of mental processes can be proposed
(through theory) and investigated scientifically
(through lab experiments)
  • Thus, this principle may be demonstrated in
    research by empirically studying cognitive models
    in order examine their causes and influences.
  • One example is the research experiment conducted
    by John Ridley Stroop

14
2. Models of mental processes can be proposed
(through theory) and investigated scientifically
(through lab experiments)
  • The Stroop Effect is an effect found in the 1930s
    by John Ridley Stroop.
  • This effect is a model for how our brain
    processes information. This effect demonstrates
    how interference can slow down how the brain
    processes information because it is trying to
    sort various things at the same time.

15
2. Models of mental processes can be proposed
(through theory) and investigated scientifically
(through lab experiments)
  • The Stroop Test is considered to measure
    selective attention, cognitive flexibility and
    processing speed, and it is used as a tool in the
    evaluation of executive functions (activities
    such as planning, organizing, strategizing,
    paying attention to and remembering details, and
    managing time and space).

16
Lets try it!
17
The Stroop Effect
18
Lets try it again!
19
(No Transcript)
20
2. Models of mental processes can be proposed
(through theory) and investigated scientifically
(through lab experiments)
  • You may find that you hesitate or stumble,
    because the brain is trying to pay attention to
    more than one thing, reading and the visualizing
    the colors.
  • The brain tries to process two types of
    information a color, and a word naming a color.
    This is why it is much more difficult to read the
    second set of words.
  • This study demonstrates that cognitive models
    (such as attention processing) can be
    investigated through scientific methods (such as
    with an experiment)

21
Principle 3Cognitive processes are influenced
by social and cultural factors
  • That is, our memories, learning, language,
    perception, decisions, etc. can be influenced by
    our culture and by environmental factors.
  • This principle may b e demonstrated in research
    that looks at social and cultural influences on
    cognitive processes.

22
Principle 3Cognitive processes are influenced
by social and cultural factors
  • Frederic Bartletts study demonstrates how memory
    can be distorted by cultural schemas.
  • Schemas are representations of knowledge based on
    experience. In his study in which British
    participants were asked to recall a native
    American folktale.

23
Principle 3Cognitive processes are influenced
by social and cultural factors
  • He found that the story of The War of the
    Ghosts was difficult for Western people to
    reproduce exactly because of its cultural content
    which was unfamiliar to them.
  • The participants ended up encoding the meaning of
    the story adapted to their existing cultural
    schemas.

24
Principle 3Cognitive processes are influenced
by social and cultural factors
  • As a result, Bartlett concluded that cultural
    interpretation plays a large role in remembering
    events or stories.
  • By showing the cultural context of our schemas
    (organized memories), Bartlett was able to show
    the cultural influence on our cognitions.
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