Behavioral Psychology: Shaping and Reinforcement Schedules

Shaping Behavior

Shaping is a behavioral psychology technique used to establish a new behavior by rewarding successive approximations of that behavior. It involves reinforcing behaviors that are progressively closer to the desired target behavior.

Dog Training Example

• Initial Step: To teach a dog to sit, the first step might be to reward the dog for simply staying in one place for a few seconds (e.g., 3 to 5 seconds), preventing them from grabbing a treat and immediately running off.
• Second Step: Once the dog consistently stays still, the reinforcement shifts. The dog is then given a treat even if they only sit for a single second—even if it's accidental. The dog may not consciously realize they are being reinforced for sitting, but this is a "gradual approximation" towards the goal of getting them to sit on command.
• Goal: The ultimate goal is to reinforce only the desired behavior (sitting) until it becomes a consistent, commanded action.

Everyday Examples of Shaping

• Working with Children: An instructor or parent might praise a child's effort (e.g., "good job, I like the effort") even if their attempt at a task isn't perfect or exactly what was intended. This reinforces the attempt and encourages further effort, shaping the child towards the correct execution.
• Athlete Training: A young athlete, such as one learning to shoot free throws, will not immediately possess perfect form. Coaches use shaping by initially praising and reinforcing improvements or approximations of the correct form, gradually building towards the ideal technique.

Reinforcement Schedules

Reinforcement schedules determine when and how often a desired behavior is reinforced. These schedules play a crucial role in the strength and persistence of learned behaviors.

Types of Schedules:

• Ratio Schedules: These schedules are based on the number of responses made.
• Interval Schedules: These schedules are based on the time elapsed between reinforcements.

Specific Classifications:

• Fixed Schedules: These involve a set number of responses (fixed ratio) or a set amount of time (fixed interval) before reinforcement is given.
• Variable Schedules: These involve an unpredictable number of responses (variable ratio) or an unpredictable amount of time (variable interval) before reinforcement.

Implicit Learning

This concept refers to learning that occurs without conscious awareness. Individuals can acquire knowledge or skills without explicitly realizing they are doing so, and this learning only becomes apparent when an opportunity arises to demonstrate it.

• Example: The act of driving is often cited as an example. Many aspects of driving (e.g., navigating traffic, understanding complex road rules) are learned implicitly through observation and experience, rather than explicit instruction. One might learn specific maneuvers or reactions that are only demonstrated "until the opportunity presents itself," meaning the skill is performed when the situation demands it, even if the learner wasn't consciously practicing or even aware of acquiring that specific piece of knowledge.