Chapter 6: Learning Case Study: The Little Albert Experiment Section 1: Classical Conditioning Section 2: Operant Conditioning Section 3: Cognitive Factors in Learning Section 4: The PQ4R Method: Learning to Learn Case Study: The Little Albert Experiment The Little Albert experiment showed that emotional reactions such as fear can be taught through classical conditioning. The Experiment • Eleven-month-old Albert was conditioned to fear a white rat rather than be amused by it. • Psychologists achieved this by pairing the rat with something that Albert would find instinctively frightening. The Results • After they paired the rat with loud noises, Albert showed a fear of the rat even when there was no noise. • Albert’s fear spread to similar objects. • By today’s standards, the experiment was unethical. Section 1 at a Glance Classical Conditioning • • Russian psychologist Ivan Pavlov pioneered research into a form of learning known as classical conditioning. In classical conditioning, one stimulus causes a response that is usually caused by another stimulus. Classical conditioning can help people adapt to the environment and can help eliminate troubling fears or other behaviors. Classical Conditioning Main Idea Classical conditioning is a form of learning that involves the use of a stimulus to generate a specific response. Reading Focus • • • What are the basic principles of classical conditioning? How might classical conditioning help people or animals adapt to the environment? What are some applications of classical conditioning? • Principles of Classical Conditioning _____________________ is a type of learning that involves stimulus-response connections. • Classical conditioning is a simple form of learning in which one stimulus calls forth the __________________ that is usually called forth by another _______________________ Pavlov’s Dogs • Russian physiologist _______________________ used dogs in his studies of classical conditioning. • He trained the dogs to associate the sound of a __________ with ________________ • They learned that the sound of the bell meant food was coming. Stimulus and Response • Unconditioned stimulus: a stimulus that causes a response that is ___________________, not learned • Unconditioned response: caused by an unconditioned ________ • Conditioned response: a learned response to a neutral ________ • Conditioned stimulus: a previously ____________________ stimulus that causes a conditioned response Adapting to the Environment Taste Aversions • • Taste aversion: ______________ response to a particular food ______-trial learning Spontaneous Recovery • Spontaneous recovery: Reappearance of an ______________________ conditioned response after some time has passed Extinction • Extinction: Disappearance of ______________________________ when unconditioned stimulus no longer follows conditioned stimulus Generalization and Discrimination • • Generalization: The tendency to respond in the ________ _________ to stimuli that have similar characteristics Discrimination: The act of responding _____________________ to stimuli that are not similar to each other Applications of Classical Conditioning Flooding and Systematic Desensitization • • In flooding, a person is ______________ to the ________________stimulus until fear responses to that stimulus are extinguished. With systematic desensitization, people learn ________________techniques and then, while they are relaxed, they are __________________ exposed to the stimulus they fear. Counterconditioning In counterconditioning, a __________________ stimulus is paired repeatedly with a ______________one, counteracting the fear Current Research in Psychology Learning from a Virtual Rat To research learning and conditioning, psychologists often design laboratory experiments with animals such as rats. But experiments with live animals can be costly and timeconsuming. Why not take advantage of computer technology and use a virtual rat? • “Sniffy the Virtual Rat” allows students to design lab experiments in a virtual environment with a virtual rat. • To create “Sniffy,” researchers studied how real rats move and learn. • Students can use the program to design and run classical conditioning experiments. • A virtual rat is less costly than a real animal. They never get tired, are always hungry, and learn more quickly, saving researchers time and effort Section 2 at a Glance Operant Conditioning • • • Psychologist B.F. Skinner helped pioneer research into a form of learning known as operant conditioning, in which individuals learn from the consequences of their actions. Operant conditioning depends on the use of reinforcements and a schedule to execute them. The principles of operant conditioning can be applied to help people or animals learn to combine a series of simple steps or actions to form complex behaviors. Operant Conditioning Main Idea Operant conditioning occurs when people or animals have learned to respond to a certain situation. Reading Focus • • • • • • • • • • • How are operant conditioning and reinforcement related? What are the main types of reinforcers? How do rewards and punishments shape learning? How do schedules of reinforcement influence learning? What are some applications of operant conditioning? Operant Conditioning and Reinforcement In operant conditioning, people and animals learn to _____ or ____________ certain things because of the ______________ of what they do. They learn from the _______________________ of their actions. In operant conditioning, voluntary responses are _________________. B.F. Skinner used the “Skinner box.” (rat presses bar for food)(reinforcement) His experiment demonstrated _____________________, or the process by which a stimulus (food) increases the chances that a preceding behavior (a rat pressing a lever) will occur again. Knowledge of _________________ is often all the reinforcement that people need to learn new skills. Types of Reinforcers Primary and Secondary Reinforcers • • • Primary reinforcers - function due to the _________________ makeup of an organism. Secondary reinforcers are learned by being ______________ with primary reinforcers. _______________ is a secondary reinforcer because we have learned that it may be exchanged for primary reinforcers like food and shelter. Positive and Negative Reinforcers • • • • Positive reinforcers _______________ the frequency of a behavior. In positive reinforcement, a person receives something he or she wants following the behavior. Negative reinforcers increase the frequency of a behavior when they are ____________________ In negative reinforcement, a behavior is reinforced because something unwanted stops happening or is removed following the behavior. Rewards and Punishments Rewards • Like positive reinforcement, rewards help ________________ learning. Some psychologists, however, prefer positive reinforcement because the concept of reinforcement can be explained without trying to guess what an organism will find rewarding Punishments • • • • • Punishments are quite different from negative reinforcers. Punishments are __________________ events that __________________ the frequency of the behavior they follow. Punishments tend to work only when they are ________________ Most psychologists believe it is preferable to reward children for desirable behavior than punish them for unwanted behavior. Schedules of Reinforcement The effectiveness of a reinforcement depends on the schedule of reinforcement— when and _______ ____________ the reinforcement occurs. Continuous and Partial Reinforcement • Continuous reinforcement is the reinforcement of a behavior __________ time the behavior occurs. (not always practical or possible) • The alternative is partial reinforcement, which means __________ reinforced every time the behavior occurs. Interval Schedules • Fixed-interval schedule: a ____________ amount of ________ must elapse between reinforcements • Variable-interval schedule: ______________ amounts of time go by between reinforcements Ratio Schedule • • Fixed-ratio schedule: reinforcement occurs after a fixed number of __________________ Variable-ratio schedule: reinforcement occurs after a _____________ number of responses Extinction in Operant Conditioning • In operant conditioning, extinction results from repeated performances of the response without ____________________ Applications of Operant Conditioning Shaping and Chaining • • • • Shaping is a way of teaching complex behaviors in which one first reinforces ______________ steps in the ______________ activity. Chaining is ___________________ the steps of a sequence to progress toward a ____________ action. Chaining can be forward or backward. Chaining can be used to teach complex behavior patterns to animals. Programmed Learning • • • • Programmed learning is based on shaping and chaining. Developed by B.F. Skinner, it assumes that any task can be broken down into small steps. Programmed learning does not involve punishments. Instead, it reinforces correct responses. Section 4 at a Glance The PQ4R Method: Learning to Learn • • The PQ4R method is a study method based on the work of educational psychologist Francis P. Robinson. Robinson believed that students will learn more when they take an active approach to learning. The PQ4R method includes these six steps: preview, question, read, reflect, recite, and review. Preview • • • Previewing a textbook means getting a general picture of the material before you start to read. Many textbooks are designed to encourage previewing. Previewing helps form a cognitive map of a chapter. Question • • You can create learning goals by writing questions about the chapter after you preview it. One way to write questions is to read the headings or the first sentence of each paragraph and write a question about it. Read • • Read the chapter with the goal of answering the questions you wrote. As you read, jot down a few key words that will remind you of the answer. Reflect • • Relate new information to old information. Relate new information to events in your own life or to people you know. Recite • • After you have answered your questions, recite the answers out loud or silently to yourself. You can recite alone or with a study group. Both are effective. Review • • Learning that occurs regularly and is distributed over time is distributed learning. Learning that occurs all at one time is massed learning, or cramming.