Pavlov Discovery Slides Psychology Unit: Learning
Deconstructing
Pavlov's Experiment
"The accidental discovery that changed how we understand behavior."
Biological Anticipation
Think about the last time you smelled pizza while walking home, or heard the sound of a soda can opening.
"Why does your mouth water before you even see the food?"
Your brain is making a connection between a signal and a biological event.
The "Accidental" Scientist
Ivan Pavlov
Russian Physiologist
Original Goal:
To study the digestive system of dogs (specifically salivation).
The Discovery:
The dogs began to salivate before the meat was presented—they reacted to the footsteps of the lab assistants or the sound of the bell.
Defining Classical Conditioning
A type of learning where a stimulus gains the power to cause a response because it predicts another stimulus that already produces that response.
A
A Signal
A Biological Event
=
A Learned Response
Class Simulation: The Lemon Test
Activity
The Setup:
Close your eyes and imagine a bright yellow lemon.
Imagine a knife slicing through the tart skin.
Imagine the juice spraying as you take a bite.
Discussion:
Did your mouth salivate? Did you pucker your lips?
Why? There is no lemon in this room.
The Anatomy of a Habit
Phase 1: Before
Two unrelated events: A sound and food.
Phase 2: During
Pairing the sound with the food repeatedly.
Phase 3: After
The sound alone causes the response.
Key Insight:
The brain learns to use the first event as a prediction for the second.
Pavlov Lab Notebook Worksheet Lab Notes: Classical Conditioning
Topic: Deconstructing Pavlov's Experiment
Researcher:
Date:
1
Mapping the Original Discovery
"It was as if the dogs were anticipating the food before it arrived. Their brains had made a connection." — Ivan Pavlov
Stage Description of Stimulus & Response BEFORE Conditioning Bell Sound →
Meat Powder →
|
| DURING Conditioning |
(Bell + Meat) →
Repeat this pairing multiple times...
|
| AFTER Conditioning |
Bell Sound (Alone) →
|
2
Analysis & Inquiry
1. Based on the simulation in class, why do you think Pavlov referred to the dogs' salivation as "psychic secretions"?
2. In the lemon simulation, what served as the "signal" (like Pavlov's bell) and what was the "biological reflex" (like the salivation)?
Signal:
Reflex:
3. Prediction: What would happen if Pavlov continued to ring the bell for 100 days but NEVER gave the dogs meat again? Explain your reasoning.
Pavlov Simulation Teacher Guide Instructional Guide
Pavlovian Simulation & Inquiry
Lesson 1.1
Est. Time: 50 Min
Objectives
Analyze Pavlov's accidental discovery.
Diagram the three stages of classical conditioning.
Participate in a guided sensory simulation.
Preparation
Ensure students have the Lab Notebook Worksheet . You will need the "Pavlov Discovery Slides" ready. No physical props are required for the "Lemon Simulation," though a real lemon (to slice and hold up) can enhance the effect if desired.
Facilitation Script & Pacing
0-10 MIN
The Hook: Biological Anticipation
Ask students: "Who here loves pizza?" Then, "Has your mouth ever watered just by smelling it?" Explain that they are reacting to a signal, not the food itself. This is the essence of classical conditioning.
10-25 MIN
The Lemon Simulation (Step-by-Step)
Ask students to close their eyes and sit upright.
Script: "Imagine I am holding a bright yellow, heavy lemon. I'm placing it on a cutting board. I take a sharp knife and slice through the peel. You see the mist of citric acid spray into the air. Now, I pick up a slice. It's dripping with tart juice. On the count of three, you're going to take a huge bite. 1... 2... 3... BITE."
Debrief: "How many of you felt your mouth water? Why? There is no lemon. Your brain associated my words (signal) with the reflex of eating fruit."
25-40 MIN
Pavlov's Discovery
Use the slides to explain Pavlov's "accidental" finding. Emphasize that he was a physiologist , not a psychologist initially. Students should fill in Part 1 of their worksheet during this time.
40-50 MIN
Critical Analysis
Independent work: Students complete Part 2 of the worksheet. Circulate and ask students about their "predictions" for Question 3.
Powerful Questions
If the dogs salivated to footsteps, does that mean they "liked" the lab assistant? (Clarify the difference between emotion and reflex).
Is classical conditioning a "choice"? Can you stop your mouth from watering?
Conditioning Components Slides The Big Four
Mastering the Components of Conditioning
Decoding the Terms
Unconditioned (UC)
Natural / Unlearned
Something that triggers a response automatically. Think "Biology."
Conditioned (C)
Learned / Artificial
Something that triggers a response only after training. Think "Association."
Stimulus vs. Response
Stimulus (S)
The "Thing" or "Event" that triggers something else. (e.g., The Meat, The Bell)
Response (R)
The "Action" or "Behavior" that follows. (e.g., Salivating)
Putting It Together: Pavlov
US
Unconditioned Stimulus
The Meat Powder (Natural trigger)
UR
Unconditioned Response
Salivating to Meat (Natural reflex)
CS
Conditioned Stimulus
The Bell (Learned trigger)
CR
Conditioned Response
Salivating to Bell (Learned reflex)
Case Study: Little Albert
1920 Ethics Check
John B. Watson wanted to prove that human emotions (like fear) could be classically conditioned.
"Give me a dozen healthy infants... and I'll guarantee to take any one at random and train him to become any type of specialist..."
The Experiment:
1. Neutral Object: White Rat
2. Biological Trigger: Loud Noise
3. The Result: Phobia
Mapping Little Albert
Unconditioned S Loud Clanging Noise
Unconditioned R Fear/Crying (to noise)
Conditioned S The White Rat
Conditioned R Fear/Crying (to rat)
Mapped Reflexes Worksheet Component Mapping Workshop
Objective: Identify US, UR, CS, and CR in real-world scenarios.
Student Name
Cheat Sheet
US: Unconditioned Stimulus (The natural trigger)
CS: Conditioned Stimulus (The learned signal)
UR: Unconditioned Response (The natural reflex)
CR: Conditioned Response (The learned reflex)
1
The Dentist Drill
Every time Sarah goes to the dentist, the painful drill makes her heart race. Now, just hearing the high-pitched whirring of the drill in the waiting room causes her heart to pound.
US:
UR:
CS:
CR:
2
The Perfume Memory
Leo’s grandmother always wore a specific lavender perfume and used to give him warm cookies when he visited. Now, whenever Leo smells lavender, he feels a sense of comfort and happiness.
US:
UR:
CS:
CR:
3
The Car Accident
After being in a scary car accident at a specific intersection, Maria feels extremely anxious whenever she has to drive through that same intersection, even months later.
US:
UR:
CS:
CR:
The Master Challenge
Create your own scenario. Write a short story (3-4 sentences) and then identify the components below.
US:
UR:
CS:
CR:
Little Albert Case Study Handout Historical Case Study
The Little Albert Experiment
Researchers: John B. Watson & Rosalie Rayner (1920)
The Subject
"Albert B." was a healthy, stable 9-month-old infant living at a hospital where his mother worked. Watson and Rayner wanted to see if they could classically condition a fear response in a human baby.
The Baseline (Pre-test)
Initially, Albert showed no fear of various "neutral" objects: a white rat, a rabbit, a dog, a monkey, and even burning newspapers. He reached out to play with them. However, like most infants, he reacted with fear (crying) to a loud noise created by striking a steel bar with a hammer.
The Conditioning
When Albert was 11 months old, the researchers presented him with the white rat. Every time Albert reached for the rat, Watson struck the steel bar behind him. This was repeated several times over several weeks.
The Result
"The instant the rat was shown, the baby began to cry. Almost instantly he turned sharply to the left, fell over on [his] left side, raised himself on all fours and began to crawl away so rapidly that he was caught with difficulty..." — Watson's Lab Notes
Ethical Problems
• Informed Consent: It is unclear if Albert's mother knew the full extent of the distress being caused.
• No Deconditioning: Albert left the hospital before Watson could attempt to remove the fear.
• Harm: Deliberately causing psychological distress to an infant.
Quick Check Questions
1. Why was Albert's fear of the rat considered "Conditioned"?
2. How does this experiment differ from Pavlov's dogs in terms of the "type" of response being conditioned?
Boundaries of Learning Slides Module 3
Generalization
& Discrimination
How learning spreads or stays specific.
Stimulus Generalization
The Definition:
The tendency to respond to stimuli that are similar to the conditioned stimulus.
"If one bell makes me drool, all bells might make me drool."
Albert Example:
Little Albert didn't just fear the white rat. He eventually became afraid of:
• A white rabbit
• A Santa Claus mask (white beard)
• A fur coat
Stimulus Discrimination
Dog Training Example:
A dog learns that a whistle means "Food," but a siren (a similar sound) does not.
The dog discriminates between the two sounds.
The Definition:
The ability to distinguish between a conditioned stimulus and other similar but irrelevant stimuli.
"Only the specific bell counts."
Survival & Fear
Fear Generalization
You are bitten by a German Shepherd. Now you are nervous around all dogs .
Safety First
Fear Discrimination
You learn that only the neighbor's growling dog is dangerous; others are fine.
Precision
Quick Check
If you get food poisoning from a specific seafood restaurant, and now the entire street where the restaurant is located makes you nauseous...
Is this Generalization or Discrimination?
Signal Sorting Activity Signal Sorting
Activity: Generalization vs. Discrimination
Student Name
1
The Case Files
Case A: The Notification Ping
Marcus's heart skips a beat whenever his phone makes a "Ding" because it usually means a text from his crush. Recently, he noticed his heart also races when he hears a similar "Ding" on a television commercial or a friend's phone.
Mechanism:
Gen.
Disc.
Case B: The Guard Dog
A security dog is trained to bark aggressively when it hears a low, guttural voice (CS). However, the dog remains calm and friendly when it hears high-pitched voices or female voices.
Mechanism:
Gen.
Disc.
Case C: The Ice Cream Truck
Young Elena loves the ice cream truck jingle. Now, whenever she hears any upbeat, repetitive synthesizer music (like in certain video games), she runs to the front window looking for the truck.
Mechanism:
Gen.
Disc.
2
The Survival Equation
Critical Thinking Challenge:
In terms of evolution and survival, which mechanism do you think is "safer" for a wild animal: Stimulus Generalization or Stimulus Discrimination ? Explain your reasoning with an example of a predator or a poisonous food.
Real World Fix:
Imagine a student has generalized their fear of a mean substitute teacher to all teachers. How would you help them learn to discriminate between teachers? What specific signals would you point out?
Timeline of Learning Slides Module 4
Acquisition
& Extinction
Tracking the strength of a learned response over time.
Phase 1: Acquisition
Definition:
The initial stage when an organism first connects a neutral stimulus (CS) and an unconditioned stimulus (US).
Pro-Tip:
The CS should be presented half a second before the US for the strongest conditioning.
Strength of CR Increases
Phase 2: Extinction
The "Removal":
If the bell rings but the meat never arrives...
...the conditioned response will eventually fade away.
Definition:
The diminishing of a conditioned response; occurs when the US no longer follows the CS.
"Extinction is NOT forgetting. It is an active suppression of the response."
Spontaneous Recovery
After a rest period, the extinguished conditioned response suddenly reappears when the CS is presented again.
Example:
You stop being afraid of elevators. But months later, as you step toward an elevator, you suddenly feel a brief flash of anxiety.
The Timeline of Learning
Acquisition
Extinction
Pause
Recovery
Trial 1 Trial 10 Trial 20 Trial 30
Learning Curve Graphing Lab The Learning Curve Lab
Activity: Graphing the Strength of Response
Researcher Name
Lab Objectives
In this lab, you will graph hypothetical data for a dog being conditioned to salivate to a metronome. You will track the strength of the salivation response across four distinct periods: Acquisition , Extinction , Rest , and Spontaneous Recovery .
1
Data Visualization
Trial # CR Strength (0-10) 1 0 5 4 10 9 Extinction Starts 15 5 20 1 Rest Period CS Returns 30 6
Response Strength (CR)
Trial Number
2
Post-Lab Analysis
1. Why does the response strength drop during Trials 11-20? What exactly did the researcher do (or stop doing) to cause this?
2. Contrast Trial 10 and Trial 30. Why is the response at Trial 30 weaker than it was at Trial 10, even though it "recovered"?
3. Predict: If we wanted to keep the CR (salivation) permanent, what is the best strategy for the researcher?
Conditioned Culture Slides Module 5
Conditioned
Culture
From Pavlov's lab to Madison Avenue.
The Art of the "Pairing"
Advertisers don't just sell products; they sell associations.
The Goal:
Make the consumer feel a biological or emotional reflex when they see the brand logo.
The Equation:
US
Beautiful Models / Fun Music
CS
The Brand Logo (e.g., Nike)
Healing the Reflex
Counter-Conditioning
A behavioral therapy that associates a pleasant, relaxed state with gradually increasing anxiety-triggering stimuli.
The Goal:
Replace Fear with Relaxation .
The Hierarchy of Fear:
Looking at a photo of a spider while deep breathing.
Being in the same room as a spider in a cage.
Letting the spider crawl on a gloved hand.
Aversion Therapy
Using classical conditioning to make someone dislike a behavior they currently enjoy.
Example: Quitting Smoking
Pairing the taste of a cigarette (CS) with a nausea-inducing drug (US).
Result: The cigarette itself now causes nausea (CR).
Unit Synthesis Project
You will now design your own conditioning plan to solve a real-world problem or sell a new product.
Psychology
Design
Action
Behavior Design Project Guide The Behavior Architect
Final Project: Designing a Conditioning Plan
Consultant Name
The Mission
You have been hired as a behavioral consultant. Your task is to design a theoretical classical conditioning plan to solve one of the following real-world challenges. You must use the scientific vocabulary learned in this unit to explain exactly how your plan will work.
Option A: The Healthy Eater
Goal: Condition a toddler to love the taste of broccoli using a fun song or colorful plate.
Option B: The Brand Booster
Goal: Design a 30-second commercial for a boring product (e.g., insurance) that makes people feel excited.
1
Identify the Baseline Variables
Unconditioned Stimulus (Biological Trigger):
Unconditioned Response (The Natural Reflex):
Neutral Stimulus (The New Signal):
2
The Conditioning Procedure
Describe how you will pair the stimuli. How many trials will it take? What is the timing (Acquisition phase)?
3
The Conditioned Outcome
The Conditioned Stimulus (Final Signal):
The Conditioned Response (Learned Behavior):
Ethical Review
Is this conditioning plan ethical? Does it cause any distress? Does the subject have a choice? Support your answer using themes from the "Little Albert" study.
Associative Learning Exit Ticket Unit Exit Ticket
Classical Conditioning Mastery
1. Which of the following best defines Classical Conditioning?
Learning through rewards and punishments for voluntary actions.
Learning an involuntary association between two stimuli.
Learning by observing and imitating the behavior of others.
Learning to ignore a repeated stimulus that has no consequence.
2. In Pavlov’s experiment, the Bell was the ________ and the Salivation to the meat was the ________.
CS / UR
US / CR
UR / US
CS / US
3. Synthesis: Explain how a perfume company might use Extinction to their advantage if a competitor uses a similar scent.
4. Reflection: What is the most important "takeaway" from this unit regarding your own daily habits?
Student Initials
