second lecture on ch6 psychology

Classical Conditioning

  • Key Concepts from Chapter 6
    • Unconditioned Stimulus (US): A stimulus that naturally and automatically triggers a response without prior learning.
    • Unconditioned Response (UR): The unlearned, natural response to the unconditioned stimulus.
    • Conditioned Stimulus (CS): A previously neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response.
    • Conditioned Response (CR): The learned response to a previously neutral stimulus that has become conditioned.

Higher Order Conditioning (Second Order Conditioning)

  • Definition: A process where a conditioned stimulus (CS) is paired with a new neutral stimulus to create a second conditioned response.
  • Example:
    • Initial Conditioning: A pet learns to associate the sound of a can opener (CS) with food (US), leading to excitement (CR).
    • Secondary Conditioning: If the can opener is kept in a squeaky drawer, the pet may start to associate the drawer (neutral stimulus) with the excitement of food.
  • Limitations:
    • Higher order conditioning can be complex and is generally limited to second-order conditioning.
    • Chaining conditioning indefinitely becomes impractical.

Examples of Classical Conditioning Concepts

  • Example of Fear Response:
    • Personal Story: The speaker experienced fear when parents fought; this response illustrates classical conditioning as the shouting associated with fear became a conditioned response.

Stimulus Discrimination and Generalization

  • Stimulus Discrimination:

    • Definition: The ability to distinguish between different stimuli; the ability to respond differently to similar stimuli.
    • Example: Theo reacts negatively to lemongrass tea but not to other teas, demonstrating discrimination.

  • Stimulus Generalization:

    • Definition: The tendency to respond similarly to stimuli that resemble the conditioned stimulus.
    • Example: Misha panics upon hearing a school bell, demonstrating generalization from her past experiences at high school.
    • Explanation: Spontaneous recovery indicates that a previously extinguished response can reappear after a pause.

Operant Conditioning

  • Definition: A process of behavior modification where behaviors are influenced by consequences; involves voluntary behavior chosen by the individual.
  • Introduced by B.F. Skinner:
    • Skinner defined operants as any active behavior that operates on the environment to produce consequences.
  • Relationship to Classical Conditioning:
    • While classical conditioning involves reflexive behaviors influenced by stimuli, operant conditioning involves voluntary behaviors influenced by their consequences.

Law of Effect

  • Definition: Actions followed by favorable consequences become more likely to be repeated; actions followed by unfavorable consequences become less likely to occur.
  • Application: This principle explains why individuals may continue to engage in detrimental behaviors (e.g., staying in toxic relationships) if they are receiving some form of desired outcome (like drama).

Reinforcement and Punishment

  • Reinforcement:

    • Definition: Any consequence that increases the likelihood of a behavior occurring again.
    • Positive Reinforcement: Adding a pleasant stimulus to increase behavior (e.g., giving a child a hug for eating vegetables).
    • Negative Reinforcement: Removing an unpleasant stimulus to increase behavior (e.g., wearing a seatbelt to stop the annoying beep in the car).

  • Punishment:

    • Definition: Any consequence that decreases the likelihood of a behavior occurring again.
    • Positive Punishment: Adding an unpleasant stimulus to decrease behavior (e.g., spanking a child for fighting).
    • Negative Punishment: Removing a pleasant stimulus to decrease behavior (e.g., taking away car keys for hitting a sibling).

Characteristics of Reinforcement and Punishment

  • Effective Punishment Factors:
    • Must be immediate to link behavior and consequence effectively.
    • Must be consistent; inconsistent application leads to confusion and can fail to reduce undesirable behaviors.
  • Negative Consequences of Punishment:
    • Temporary behavior changes.
    • Can instill fear and inhibit open communication between the child and the parent.
    • Teaches that aggression is an acceptable way to achieve goals, which can lead to increased violence.

Differences in Reinforcers

  • Primary Reinforcers: Unlearned; fulfill basic biological needs (e.g., food, water).
  • Secondary Reinforcers: Conditioned; must be learned and often gain value through association with primary reinforcers (e.g., money).
  • Immediate vs. Delayed Reinforcers:
    • Immediate reinforcement occurs right after the desired behavior, while delayed reinforcement occurs after a significant time period (e.g., working out earns health benefits long-term).

Reinforcement Schedules

  • Continuous Reinforcement: Provides reinforcement every time a desired behavior occurs, useful for establishing new behavior.
  • Partial Reinforcement: Provides reinforcement only some of the time; useful for maintaining behavior once it is established.
  • Random Reinforcement: Increases unpredictability; can be effective but less stable for initial learning.