List three (3) differences between 9th and 12th graders.

Do Now

How do we use the Scientific Method in Psychological Research?

Hypothesis:

Statement of

expected results

Subjects chosen

Subjects divided up

Experimental Group(get the

experiment)

Control Group(do not get the

experiment)

Variables: Factors that change in an experiment

How to tell the difference between variablesIndep

endent

Variable

IFA request is made by a person in a uniform

Dependent

VariableTHENMore people will reply to this request

What is the experimental group?

Group on which critical

part of experiment

is performed

This group gets the real

sleeping pills

What is the Control Group?

Control Group

• Consists of subjects who are just like the experimental group except will not participate in the study

This group will not receive a placebo

• Placebo is a medicine that has no active ingredients and works by power of suggestion

Do Sleeping Pills Work?SubjectsTwo groups of people in similar health, same age, similar sleep issues

Independent Variable(The variable the experimenter changes)Experimenter gives one group real sleeping pills and one group placebos

Hypothesis2 sleeping pills help

people with insomnia

What is a double-blind study?

• Patient’s expectations• Wondering which group gets real drug

Subject

What is a Control?

Examples: Subject with

cold, on medication, or any other issue

that could cause the results to be

effected

Something that could skew

results

Experimental

Subjects removed

Review: Research Methods Test

1. What is a hypothesis?2. What part of an experiment is the Independent Variable?3. What part is the Dependent Variable?4. What is the experimental group?5. What is a control group?*Bonus: What is a placebo?

Are researchers responsible for their subjects – even if they

volunteer for an experiment?

Do Now

Experiments: Harlow’s Monkeys

• In subsequent experiments, Harlow’s monkeys proved that “better late than never” was not a slogan applicable to attachment. When Harlow placed his subjects in total isolation for the first eights months of life, denying them contact with other infants or with either type of surrogate mother, they were permanently damaged. Harlow and his colleagues repeated these experiments, subjecting infant monkeys to varied periods of motherlessness. They concluded that the impact of early maternal deprivation could be reversed in monkeys only if it had lasted less than 90 days, and estimated that the equivalent for humans was six months. After these critical periods, no amount of exposure to mothers or peers could alter the monkeys’ abnormal behaviors and make up for the emotional damage that had already occurred.

What are some types of research studies?

Cross Sectional Studies

Random sample of population

May not truly measure

generational issues

Case Study

Detailed information

Very detailed, no

comparisons

ProCon

Survey

Quick way to gather a lot of

information

Questions can be misunderstood

Interview

One on one information

Subject can be less than truthful –

interpretation issues

ProCon

Lab Experiment

Research completely objective

Artificial Setting

Field Setting

More realistic than Lab setting

Difficult to control

variables

ProCon

Naturalistic Observation

Observe in natural

environment

No subject feedback

Longitudinal Study

Gathers information over

a subject’s life

Expensive to undertake and keep

track of subjects

ProCon

What bothers you the most about people?Why do they do it?

How would you prove it?

Which method of research would best yield the most accurate data for your question?

What are Ethics?

You will see many studies that used:•Deception,deliberate creation of anxiety in subjectsStudies justified on grounds that:•We are seeking more information about human beings•More knowledge = the more people can be helpedProblems in history of psychological research:•Stanley Milgram Experiment•Stanford Prison Experiment•Little Albert

The American Psychological Association 1992

•Subjects must have right to decline/withdraw participation•Openness and honesty (disclose as soon as possible afterwards if this would skew results)•Information obtained must remain confidential•Experimenter has duty to assess any potential risks, and inform subject – correct/remove undesirable consequences

What is Classical Conditioning?

The unconditioned stimulus is one that unconditionally, naturally, and automatically triggers a response. For example, when you smell one of your favorite foods, you may immediately feel very hungry. In this example, the smell of the food is the unconditioned stimulus.

Smell Food(Unconditio

ned Stimulus)

Hungry(Unconditio

ned Response)

Lunch Bell Rings

(Conditioned Stimulus)

Hungry when you hear bell(Conditioned

Response)

What is a Conditioned Stimulus?

One of the best-known aspects of behavioral learning theory is classical conditioning. Discovered by Russian physiologist Ivan Pavlov. Laid the groundwork for Behaviorism. Often used in training pets and teaching children.

The unconditioned response is the unlearned response that occurs naturally in response to the unconditioned stimulus. For example, if the smell of food is the unconditioned stimulus, the feeling of hunger in response to the smell of food is the unconditioned response.

Smell Food

(Unconditioned

Stimulus)

Hungry(Unconditi

oned Response)

Lunch Bell Rings

(Conditioned

Stimulus)

Hungry when you hear bell

(Conditioned Response)

What is an Unconditioned Response?

The conditioned stimulus is the previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response.For example, suppose that the smell of food is an unconditioned stimulus and a feeling of hunger is the unconditioned response. Now, imagine that when you smelled your favorite food, you also heard the sound of the lunch bell. While the bell is unrelated to the smell of the food, if the sound of the bell was paired multiple times with the smell, the sound would eventually trigger the conditioned response. In this case, the sound of the bell is the conditioned stimulus.

Smell Food(Unconditi

oned Stimulus)

Hungry(Unconditi

oned Response)

Lunch Bell Rings

(Conditioned Stimulus)

Hungry when you hear bell

(Conditioned Response)

What is a Conditioned Stimulus?

What is a Conditioned Response?The conditioned response is the learned response to the previously neutral stimulus. For example, let's suppose that the smell of food is an unconditioned stimulus, a feeling of hunger in response to the smell is a unconditioned response, and the sound of a whistle is the conditioned stimulus. The conditioned response would be feeling hungry when you heard the sound of the whistle.

Smell Food

(Unconditioned

Stimulus)

Hungry(Unconditi

oned Response)

Lunch Bell Rings

(Conditioned

Stimulus)

Hungry when you hear bell

(Conditioned Response)

Summary• Scientific Method is used in Psychology experiments• Hypothesis: statement of expected results. Can be

proved or disproved through observation and experimentation

• Experimental Group: Group participating in experiment

• Control Group: Group not participating in the experiment

• Control: removal of subjects that could skew results• Variables: factors introduced or resulting from

experiment• Independent Variable: Variable controlled by

Researcher• Dependent Variable: Result of Experiment• Placebo: medicine with no active ingredients –

works by power of suggestion• Double Blind Study: Experiment with neither the

subject nor researcher knowing who has the placebo – removes expectations that can skew results

• Ethics: Guidelines for Psychological Experiments – results must outweigh risks.

• There are many types of psychological studies – each has their pros and cons.

• Types: Field Studies, Lab Experiments, Naturalistic Observation, Case Studies, Surveys, Longitudinal and Cross Sectional Studies, and Interviews.

• Classical Conditioning: is a learning process that occurs through associations between an environmental stimulus and a naturally occurring stimulus.

• Unconditioned Stimulus: one that unconditionally, naturally, and automatically triggers a response.

• Conditioned Stimulus: previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response

• Unconditioned Response: s the unlearned response that occurs naturally in response to the unconditioned stimulus

• Unconditioned Stimulus: previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response