Warm Up Set up new table of contents/title page for chapter 8 Warm Up Think of 3 things you have learned to hate and write down why you hate it/them. What stimuli has to be present for you to hate it/them and what is your response to that stimuli

Warm Up Find a group of 2 or 3 to work with. YOU will be working with this group on several assignments and quizzes, so choose wisely Pick up the 2 papers off of the front desk Write down HW

Classical conditioning and Pavlov http://www.youtube.com/watch?v=hhqumfpxuzI Classical conditioning and the office http://vimeo.com/5371237 http://www.youtube.com/watch?v=WfZfMIHwSkU Classical Conditioning and Baby Albert http://www.youtube.com/watch?v=0FKZAYt77ZM Operant and Skinner  ://www.youtube.com/watch?v=I_ctJqjlrHA   Operant and Big Bang theory http://vimeo.com/18823407 http://www.youtube.com/watch?v=qy_mIEnnlF4 Op. learning and single ladies http://www.youtube.com/watch?v=kU9MuM4lP18 Op Learning and Bandura Bobo http://www.youtube.com/watch?v=lCETgT_Xfzg

Chapter 8 pt. 1: Learning and Classical Conditioning

How Do We Learn? Learning is defined as a relatively permanent change in an organism’s behavior due to experience (nurture). Most learning is associative learning: learning that certain events occur together. There are 3 main types of Learning: 1. Classical Conditioning 2. Operant Conditioning 3. Observational Learning

All Living Animals Learn Through Association

Behaviorism focuses on Learning John Watson is generally considered the father of behaviorism. Behaviorism focused on: Making psychology an objective science Studying behavior without reference to mental processes (early behaviorists like Watson will ignore cognition but most recognize its importance today.)

John Watson: the Father of Behaviorism Give me a dozen healthy infants, well-formed, and my own specified world to bring them up in and I'll guarantee to take any one at random and train him to become any type of specialist I might select – doctor, lawyer, artist, merchant-chief and, yes, even beggar-man and thief…. Focused on external behavior Believed Nurture was more important than nature.

Type of Learning 1: Classical Conditioning (Pavlovian Conditioning) Terms you must understand: Unconditioned means it is unlearned and comes naturally. Ex: salivating when presented with food. Conditioned means it is learned and the response does not come naturally. Ex: getting up when school bell rings. Response: is a behavior done in response to the stimulus, like salivating. Stimulus: external thing that may cause a behavior like a bell or food.

Father of Classical Conditioning is Ivan Pavlov Russian physician/ neurophysiologist Was studying digestive enzymes in dogs when he accidentally realized the importance of associative learning which would consume his research for rest of his life.

Classical Conditioning (Pavlovian Conditioning) Classical Conditioning is a type of learning in which an organism comes to associate stimuli. Ex: tone and food. Begins with a reflex which is unconditioned (unlearned) A Neutral Stimulus is paired with a stimulus that evokes the reflex. Eventually the neutral stimulus alone will come to evoke the reflex.

Pavlov’s Classic Experiment

Dog in Pavlov’s Apparatus

Pavlov took an untrained dog in a harness Pavlov took an untrained dog in a harness. Pavlov sounded a tone at certain intervals and every time the tone sounded he gave the dog food. The dog salivated when given the food. After several intervals, Pavlov would sound the tone and the dog would salivate even before the food was given to him.

BEFORE CONDITIONING

During Conditioning

After Conditioning The process leading up to this is known as acquisition

Components of Classical Conditioning Unconditioned Stimulus (UCS) effective stimulus that unconditionally-automatically and naturally- triggers a response Food in mouth Unconditioned Response (UCR) unlearned, naturally occurring automatic response to the unconditioned stimulus salivation when food is in the mouth

Components of Classical Conditioning Conditioned Stimulus (CS) previously neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response Tone Conditioned Response (CR) learned response to a previously neutral conditioned stimulus Salivating to the tone

An experimenter sounds a tone just before delivering an air puff to your eye. After several repetitions, you blink to the tone alone. UCS UCR CS CR

Other Terms Pavlov Used To Describe Process of Conditioning 1. Acquisition 2. Extinction 3. Spontaneous Recovery 4. Generalization 5. Discrimination

Acquisition and Extinction Acquisition: the initial stage of learning, during which a response is established and gradually strengthened. When a neutral stimulus causes a conditioned response. Tone = Salivation Extinction: the diminishing of a conditioned response. When bell no longer makes dog salivate.

Spontaneous Recovery Spontaneous Recovery refers to the reappearance, after a rest period, of an extinguished conditioned response.

Generalization vs. Discrimination Generalization: tendency for a stimuli similar to CS to evoke similar responses. Ex: doesn’t have to be same tone to make dog’s salivate…they generalize. Discrimination: the ability to distinguish between a CS and other stimuli that do not signal an UCS. Ex: dogs wouldn’t salivate to a whistle since it was too different from the tone.

Effectiveness of Proper Conditioning Conditioning works best when a Conditioned Stimulus is presented before a Unconditioned Stimulus which is called forward conditioning Why do you think backwards conditioning (when Unconditioned stimulus is presented before conditioned stimulus) is usually ineffective?

Other Examples of Classical Conditioning John Watson conducted the Little Albert study in 1920 in which he attempted to modify the behavior of a 9 month old infant. Started with white rat which infant originally did not fear. After experiment, Little Albert feared white rats, rabbits, Santa Claus, cotton wool, etc. Generalization:

                                                   

Other Examples of Classical Conditioning UCS (passionate kiss) UCR (sexual arousal) CS (onion breath) CR Kiss)

Other Examples of Classical Conditioning: Nausea in Cancer Patients UCS (drug) UCR (nausea) CS (waiting room) CR

Criticism of Old School Behaviorists: They Ignore Cognition Studies proved that subjects attitudes did matter when attempting to create conditioned responses in them. Ex: ½ told that being conditioned was wise, sensible, and intelligent while other half was told the reverse….positive instructions assisted conditioning while negative instructions undermined the process Drugs

Proved wrong by taste aversion studies Biology influences learning Criticism of Old School Behaviorists: They Ignore Biological Predispositions Watson and Pavlov believed any animal (including humans) could be conditioned where ANY neutral stimulus paired with a unconditioned stimulus could easily produce a conditioned response. Proved wrong by taste aversion studies Biology influences learning Conditioning occurs easier with some stimuli than others The response does not have to follow the stimuli immediately

The biological predispositions of each species dispose it to learn the particular associations that enhance its survival

Garcia’s Taste Aversion Studies Set up experiment with rats. Exposed them to sights, sounds, and tastes (CS) and later also gave them radiation or drugs that led to nausea and vomiting (UCR). Even if sickened hours later, rats avoided the particular flavor of water but did NOT develop aversions to the sights or sounds. Taste Aversion became known as the “Garcia Effect.”

Importance of Taste Aversion Studies 1.) Violated behaviorists principle that any stimulus could serve as a CS. Flowers 2.) Shows that nature prepares the members of each species to learn those things crucial to their survival. 3.) Are exceptions to classical conditioning rules: UCS does not always have to follow CS immediately.

Some Real World Applications of Classical Conditioning 1.  Crack cocaine users feel craving when they encounter cues associated with highs (people, places, etc). So drug and rehab counselors advise them to steer clear of these places and people…make new friends, move. 2.  Alcohol with drug that induces vomiting cut down drinking.

Classical conditioning is especially useful for understanding which one of the following examples of learning? A dog that has learned to “sit” for a food reward A psych student who is learning how memory works A child who, after a painful dental visit, has developed a fear of the dentist An executive who is afraid that she will lose her job

The responses in classical conditioning were originally Innate reflexes New behaviors Premeditated behaviors Random acts

If you learned to fear electrical outlets after getting a painful shock, what would be the CS? The electrical outlet The painful shock The fear The time period between seeing the outlet and getting the shock

Which of the following would be most likely to be an unconditioned stimulus (UCS) involved in classical conditioning? Food A flashing light Music Money