presenter: mai hinton mentors: lindsey powell & kate hobbs february 2011
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Theory of Mind
Presenter: Mai HintonMentors: Lindsey Powell & Kate
HobbsFebruary 2011
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Today’s PresentationWhat is theory of mind?
Theory of mind studies with preschool-age childrenFalse Belief Task
Theory of mind studies with younger childrenLooking TimeHelping
Discussion
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What is theory of mind?
Understanding others’ mental states, such as thoughts, feelings and beliefs, and using them to predict and explain their behavior
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Do children possess a ToM?
Preschool studies (3- and 4-year-olds)
Elicited responseFalse Belief Task (Wimmer & Perner, 1983)
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Sally-Anne TaskSally plays with her dollie and
then places her into the crib, under the covers.
Sally then leaves the room.
While Sally is gone, naughty Anne hides the dollie in the toy box.
Sally returns.“Where will she look for her dollie?”
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Discussion of Sally-Anne TaskConsistent and significant results over many studies
4-year-olds answer correctly; 3-year-olds do not
Do you think this is good evidence of ToM?Why do 3-year-olds fail this task?Are 3-year-olds capable of a ToM?
What could be done differently?
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Spontaneous-response tasks
Violation of ExpectationsMeasure looking time
Onishi & Baillargeon, 2005
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Understanding False BeliefsFamiliarization trials
Trial 1: Agent plays with toy, hides it in the green box and then leaves hand in green box for several seconds and curtain drops
Trial 2 & 3: Curtain opens, agent reaches hand into green box (where the toy is) and stays there until curtain drops
(Onishi & Baillargeon, 2005)
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True Belief
Agent watches while the toy moves from the green to yellow box
TB-yellow
Expected
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False BeliefSame as TB-yellow but then
toy shifts to the green box when the agent is not watching
FB-yellow
Unexpected
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ToM in 18-month-olds?
Current ResearchBaillargeon reading
In This LabHelping TaskLooking Time Task
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Helping Task(Buttelmann,
2009)
Active behavioral measure
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Looking Time Task in Our LabOnishi & Baillargeon design
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Looking Time Results
Our Data Onishi & Baillargeon, 2005
0
5
10
15
20
25
Looking Time Trials
UnexpectedExpected
Belief Condition
Mean L
ookin
g T
ime (
seconds)
☐ Yellow Box
Green Box
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Helping Task Results
Note: There were also 9 children who did not help.
0
5
10
15
20
25
Helping Task
Passes
Fails
No.
of C
hild
ren
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Looking at Both Looking Time and Helping Tasks
Buttelmann-Pass Buttelmann-Fail Buttelmann-No Help
0
5
10
15
20
25
30
Helping Task & Looking Time
Unexpected (Reality-based)Expected (False belief-based)
Mean L
ookin
g T
ime (
seconds)
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Discussion
RecapTheory of mindStudies
Thoughts?