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Catalyst – August 5(4), 2009. Remember, your groups are in rows – remember your seat! Write down 5 observations about Ms. Stroh. Next, make an inference BASED ON THOSE 5 OBSERVATIONS. You have 5 minutes!. Today’s Agenda. Catalyst Hypothesis Notes Intro to The Stroop Effect Test

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catalyst august 5 4 2009
Catalyst – August 5(4), 2009

Remember, your groups are in rows – remember your seat!

  • Write down 5 observations about Ms. Stroh. Next, make an inferenceBASED ON THOSE 5 OBSERVATIONS.

You have 5 minutes!

today s agenda
Today’s Agenda
  • Catalyst
  • Hypothesis Notes
  • Intro to The Stroop Effect Test
  • Perform The Stroop Effect Test
  • Independent Work Time: Finish lab report for homework
  • Exit Question

Syllabus Quiz Tomorrow!

exit questions from yesterday
Exit Questions from Yesterday
  • In your own words, describe the difference between an observation and an inference.
  • Label the following statements as either observation (O) or inference (I). Don’t write the statements!
    • Glue feels sticky. (O)
    • Michael Jordan was the best basketball player of all time. (I)
    • Talib Kweli writes beautiful lyrics. (I)
    • Pickles smell gross! (I)
    • Christian hears the bell ringing. (O)
today s objectives
Today’s Objectives
  • SWBAT make a quality hypothesis.
  • SWBAT test a hypothesis in an experiment.
think pair share
Think – Pair – Share
  • Where have you heard the word hypothesis before?
  • What does the word hypothesis mean? Go further than just “educated guess.”
what s a hypothesis good for
What’s a hypothesis good for?
  • Key Point #1: Scientists make hypotheses to answer questions they have about the world.
    • Remember inferences?
    • A hypothesis is a type of inference
hypothesis
Hypothesis

Key Point #2: A hypothesis is an educated, testable guess.

  • Educated = there’s a reason you guess what you guess
  • Testable = there’s a way to prove it right or wrong
example 1
Example 1
  • Question: Will Ms. Stroh run faster than her soccer players if she wears her cleats rather than her tennis shoes?
  • Hypothesis: If Ms. Stroh wears her cleats, then she will run faster than her soccer players.
    • Is it educated?
      • Yes!
    • Is it testable?
      • Yes!
example 2
Example 2
  • Is this a good hypothesis?
  • Question: Would Lil’ Wayne be as popular as he is now in the 1970s?
  • Hypothesis: If Lil’ Wayne was in the 1970s, then he would be just as popular.
    • Is it educated?
      • Yes!
    • Is it testable?
      • No!
example 3 t p s
Example 3 (T-P-S)
  • Is this a good hypothesis?
  • Question: Do students at West Jeff like green or orange more?
  • Hypothesis: Students at West Jeff like green more.
    • Is it educated?
      • No!
    • Is it testable?
      • Yes!
example 4 t p s
Example 4 (T-P-S)
  • Is this a good hypothesis?
  • Question: Do people prefer Pepsi or Coke?
  • Hypothesis: Everyone prefers Pepsi over Coke….duh!
    • Is it educated?
      • ???
    • Is it testable?
      • No!
why is this man happy

What is this woman thinking?!?!

What would happen if you ate this ice cream?

Why is this man happy?
example 5 t p s
Example 5 (T-P-S)
  • Question: Will using pheromone cologne allow one man to attract more women?
  • Come up with a hypothesis with your group.
  • Remember….
    • It must be educated
    • It must be testable
example 6 on your own
Example 6 (On your own!)
  • Question: Does listening to classical music improve student’s performance on tests?
  • Come up with a hypothesis on your own.
s t r o o p a doop
Stroop-a-doop
  • When you first learned to tie shoelaces, you needed to carefully think through each step of the process.
    • Now, you probably do not even seem to think about the steps but simply initiate a series of movements that seem to proceed without any further influence. This is called automatization. (Think: automatic)
  • Many behaviors can become automatized: typing, reading, writing, bicycling, piano playing, driving, etc.
  • To explore properties of automatized behaviors, cognitive psychologists often put observers in a situation where an automatized response is in conflict with the desired behavior
    • The Stroop effect
  • Stroop (1935) noted that test subjects were slower to identify red ink when it spelled the word blue
s t r o o p a doop roles
Stroop-a-doop: Roles
  • In this lab, there are 4 positions:
    • Time Keeper
    • Test Subject
    • Test Proctor
    • Signal Giver
    • Each person will get an opportunity to be each role!
slide18
Matching Color

RED

BLUE

YELLOW

YELLOW

GREEN

RED

slide19
Non-Matching Color

RED

BLUE

YELLOW

YELLOW

GREEN

RED

s t r o o p a doop class discussion
Stroop-a-doop: Class Discussion
  • What was measured in this experiment?
    • Dependent variable: time
  • What was intentionally changed in this experiment?
    • Independent variable: ink color, matching or non-matching
  • What things were held constant in this experiment?
  • Was your hypothesis right or wrong?
exit questions
Exit Questions
  • What are the characteristics of a good hypothesis?
  • Write a quality hypothesis using the following question:
    • Will Ms. Stroh’s students achieve higher mastery of GLEs than Mr. LY’s students if they pay attention in class everyday?
group chat
Group Chat
  • What was the dependent variable in this lab?
  • HINT: What did I measure?
group chat1
Group Chat
  • What was the independent variable?
  • HINT: What did I change?
group chat2
Group Chat
  • Discuss what is wrong with this conclusion:
  • Jeremiah took 8.5 seconds to go through the non-matching list. Therefore, it takes longer to go through the non-matching list than the matching list.
group chat3
Group Chat
  • Was there a control in this experiment? Why was it necessary?
independent time
Independent time
  • Each person must turn in a lab report on the Stroop experiment.
exit questions1
Exit Questions
  • Why are controls necessary in valid scientific experiments?
  • If I am testing whether I score more points if I am wearing my Air Jordans in an experiment, what would be a good control group?