Cognitive Processes: In Depth Notes

Unit 2: Cognitive Processes

Module 2.1a: Understanding Cognition and Perception

  • Cognition Definition: All mental activities associated with thinking, knowing, remembering, and communicating.

  • Perception: How the brain organizes and interprets sensory information to recognize events and objects as meaningful.

  • Information Processing:

    • The brain acquires approximately 11,000,000 bits of information per second.
    • Only about 40 bits are consciously processed; the rest (10,999,960 bits) is processed unconsciously.

  • Selective Attention: Focusing consciously on specific bits of information while ignoring others.

    • Analogy: Like directing a flashlight in a dark basement.
    • Example: Cocktail Party Effect - ability to focus on one conversation in a noisy environment.

  • Inattentional Blindness: Failing to notice visible objects when attention is directed elsewhere. It has both positive and negative implications.

  • Change Blindness: Failing to notice changes in the environment. Illustrated with the example of watching a magic trick.

Module 2.1b: Visual Perception and Organization

  • Perceptual Set: A mental predisposition to perceive one thing and not another. Example: Seeing an old woman or a young woman based on your expectations.

  • Gestalt Principles: Emphasis on perceiving organized wholes instead of individual parts.

    • Influential in understanding visual perception.
    • Examples include Figure-Ground organization and Grouping (proximity, similarity, continuity, closure).

  • Depth Perception: Ability to see objects in three dimensions and judge distance.

    • Binocular cues include retinal disparity and convergence.
    • Monocular cues include relative size, interposition, and linear perspective.

  • Motion Perception: Object size perception can be misleading as smaller objects may seem to move faster. Phenomena involved include Stroboscopic Movement and Phi Phenomenon.

  • Perceptual Constancy: Perceiving an object as unchanging despite changes in illumination, retinal images, etc. Types include color, brightness, shape, and size constancy.

Module 2.2a: Concepts and Thinking Strategies
  • Concepts: Mental grouping of similar objects, events, ideas, or people.
  • Prototype: A mental image or best example of a category.
  • Metacognition: Thinking about one's own thinking. Involves self-awareness during cognitive processes.
Module 2.2b: Problem Solving and Heuristics

  • Executive Functioning: Cognitive skills enabling organized, goal-directed behavior.

    • Methods of problem solving include:
    • Algorithms: Methodical logical rules solving particular problems (though slower in real life contexts).
    • Heuristics: Mental shortcuts for efficient, though potentially error-prone judgments.
      • Types of heuristics:
      • Representative Heuristics: Judging likelihood based on prototypes.
      • Availability Heuristics: Estimating likelihood based on memory availability.

  • Confirmation Bias: Tendency to search for information supporting preconceptions while ignoring contradictory evidence.

  • Mental Set: Tendency to approach problems in one way. Can lead to functional fixedness, where one only sees one use for an object.

Module 2.3: Memory Processes

  • Memory: Persistence of learning through encoding, storage, and retrieval of information.

  • Retention Measures:

    • Recall: Retrieving information not currently in conscious awareness (e.g., fill-in-the-blank).
    • Recognition: Identifying previously learned items (e.g., multiple choice).
    • Relearning: Learning something faster the second time around.

  • Memory Models:

  • Atkinson-Shiffrin Model:

    • Sensory Memory: Brief recordings of sensory information.
    • Short-term Memory: Holds a few items briefly.
    • Long-term Memory: Permanent, limitless storage of knowledge and experiences.

  • Working Memory: Alan Baddeley's revision to the short-term memory model, involves active processing.

Module 2.4: Memory Formation and Processes
  • Encoding: Processing information into memory by extracting meaning.
  • Retrieval: Accessing stored memories.
  • Neural Connections: Neural pathways strengthen with repetition and experience.
  • Memory Storage Areas: Frontal lobes (working memory), hippocampus (explicit memories), cerebellum (implicit memories).
  • Flashbulb Memories: Clear memories of emotional events, often related to stress hormones and amygdala activation.
Module 2.5: Forgetting and Memory Construction
  • Forgetting Causes: Encoding failure, storage decay, retrieval failure, motivated forgetting, and interference.
  • Memory Construction Errors: Misinformation effect; constructing memories based on misleading information.
Module 2.6: Assessing Intelligence

  • Intelligence Definition: Capacity to learn from experience, solve problems, and adapt.

  • Types of Intelligence Tests:

    • Achievement Tests: Measure what a person has learned.
    • Aptitude Tests: Predict future performance.

  • General Intelligence (g): Overall mental ability underlying specific talents.

  • Multiple Intelligences: Gardner's theory, emphasizing various abilities beyond traditional IQ.

Module 2.7: The Stability and Influence of Intelligence
  • Longitudinal vs. Cross-sectional Studies: Each methodology gives insights on intelligence as it relates to age and development.
  • Nature vs. Nurture: Both genetic and environmental influences play roles in intelligence development.
Module 2.8: Understanding Emotional and Social Intelligence
  • Emotional Intelligence: Ability to manage and understand one's emotions and navigate social complexities.
  • Social Intelligence: Comprehending social situations successfully.
  • Stereotype Threat: Performance affected by awareness of stereotypes concerning one’s group.