Negative Reinforcement Notes

Negative Reinforcement

Reinforcement: Any stimuli that increases future behavior frequency in similar settings when presented contingent upon the behavior.
Positive Reinforcement: Presenting a stimulus after a behavior to increase that behavior. Example: Giving a dog a treat for sitting on command.
The effectiveness of a reinforcer is determined by observing an increase in the behavior.
Reinforcement and punishment are consequences within the antecedent-behavior-consequence framework of operant behavior.

Involves the removal of a stimulus from the environment to increase a behavior.
Example 1: Scratching an itch. The scratching behavior is reinforced by the removal of the itching sensation.
Example 2: Buckling a seatbelt to stop the car's warning chime.

Scenario: Eleanor screams to avoid bath time. Her dad sometimes allows her to skip the bath when she screams.
Eleanor screams more when it's her dad's turn.
Dad provides negative reinforcement by allowing Eleanor to avoid the bath when she screams.
Screaming leads to the delay or avoidance of the bath.

Dad is a discriminative stimulus (SD) for screaming because his presence indicates that screaming will be reinforced by bath avoidance.
Mom is an S-delta because her presence indicates that screaming will not result in bath avoidance.

Inconsistency in reinforcement (sometimes screaming works, sometimes it doesn't) can strengthen the behavior and make it harder to extinguish.

Teach a new escape response: Encourage Eleanor to say "Not now, please" or "Can we wait?"
Condition the bath as a reinforcer: Add enjoyable items like rubber ducks, themed toys, or bubbles to make bath time more appealing.

Aversive Stimulus: A stimulus that increases the frequency of responses that lead to its removal.
Eleanor's case: Bath time is aversive, leading her to scream to avoid it.
Aversive vs. Appetitive Stimuli:
- Aversive: Stimuli organisms work to avoid.
- Appetitive: Stimuli organisms seek out.
- Analogy: "Aversive" reminds of "avoid"; "Appetitive" sounds like "appetite."

Harmful stimuli: Bitter berries, extreme temperatures, pain.
Learned aversions: A child hating dishwashing and avoiding dish sponges.
Reducing the magnitude of an aversive stimulus can be reinforcing (e.g., turning up the heat to reduce cold).

Taking pain reliever for a headache. (\text{Pain relief is contingent on taking the medication})
A student cusses in math class and is sent to the hall, thus escaping math class.
- Potential unintended reinforcement: Escape from math and access to friends in the hall may reinforce the cussing behavior.

Multiple contingencies can be at play simultaneously. Scenarios are often more complex than they appear.
It's crucial to consider various layers of potential reinforcement and punishment when analyzing behavior.