Catalyst august 5 4 2009
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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

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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!


S t r o o p a doop let s model this

Stroop-a-doop: Let’s model this

  • I need 4 volunteers!


Catalyst august 5 4 2009

Matching Color

RED

BLUE

YELLOW

YELLOW

GREEN

RED


Catalyst august 5 4 2009

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?


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