brains can tell us more about social cognition if our methods don’t presuppose the answers. ian...
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Brains can tell us more about social cognition if our methods don’t presuppose the answers.
Ian Apperly
Brains can tell us more about social cognition the cognitive basis of “theory of mind”if our methods don’t presuppose the answers.
Ian Apperly
What is “Theory of Mind”?• “Folk psychology”, “Perspective-taking”, “Social cognition”• Essential for everyday social interaction and communication
• False belief tasks as a paradigm case• (e.g., Wimmer & Perner, 1983)
– These tasks ensure that participant must judge from other person’s point of view
What is “Theory of Mind”?• “Folk psychology”, “Perspective-taking”, “Social cognition”• Essential for everyday social interaction and communication
• False belief tasks as a paradigm case• (e.g., Wimmer & Perner, 1983)
– These tasks ensure that participant must judge from other person’s point of view
• Significant developments from infancy to early childhood
• Disproportionately impaired in autism and several other genetic and psychiatric disorders
What is “Theory of Mind”?• “Folk psychology”, “Perspective-taking”, “Social cognition”• Essential for everyday social interaction and communication
• False belief tasks as a paradigm case• (e.g., Wimmer & Perner, 1983)
– These tasks ensure that participant must judge from other person’s point of view
• Significant developments from infancy to early childhood
• Disproportionately impaired in autism and several other genetic and psychiatric disorders
• Existent, to a degree, in non-human animals
What is “Theory of Mind”?• “Folk psychology”, “Perspective-taking”, “Social cognition”• Essential for everyday social interaction and communication
• False belief tasks as a paradigm case• (e.g., Wimmer & Perner, 1983)
– These tasks ensure that participant must judge from other person’s point of view
• Significant developments from infancy to early childhood
• Disproportionately impaired in autism and several other genetic and psychiatric disorders
• Existent, to a degree, in non-human animals
• Identifiable neural networkTemporo-parietal junction / pSTS
Temporal poleMedial prefrontal cortex
Lateral view
TPJ
TP
Medial view
mPF
C
Theory of mind in adults?
• “But don’t adults have a theory of mind……?”
• Prevailing view:– ToM is a set of concepts– Researchers should figure out who has them (and where
they are in the brain).....– ....by seeing who passes false belief tasks
Temporo-parietal junction / pSTSTemporal poleMedial prefrontal cortex
Lateral view
TPJ
TP
Medial view
mPF
C
Theory of mind in adults?
• “But don’t adults have a theory of mind……?”
• Prevailing view:– ToM is a set of concepts– Researchers should figure out who has them (and where
they are in the brain).....– ....by seeing who passes false belief tasks
• Problems with this view:– No cognitive account of ToM in adults– Severe limitations on conceptualising extended
development, neural basis and disorder – Little integration with the rest of cognition
Temporo-parietal junction / pSTSTemporal poleMedial prefrontal cortex
Lateral view
TPJ
TP
Medial view
mPF
C
Background: The “theory of mind network”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFC
Precuneus
TPJ
TP
Anterior
PC
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Background: The “theory of mind network”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFC
Precuneus
TPJ
TP
Anterior
PC
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Background: The “theory of mind network”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFC
Precuneus
TPJ
TP
Anterior
PC
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Main debate is around which regions are “really” ToM regions – i.e. Where is the ToM module?
ToM functional localiser(Saxe & Kanwisher, 2003......)
False belief (FB) sample storyJohn told Emily that he had a Porsche.Actually, his car is a Ford. Emilydoesn’t know anything about carsthough, so she believed John.—When Emily sees John’s car shethinks it is aporsche ford
False photograph (FP) sample storyA photograph was taken of an apple hangingon a tree branch. The film took half an hour todevelop. In the meantime, a strongwind blew the apple to the ground.—The developed photograph shows the apple on theground branch
ToM functional localiser(Saxe & Kanwisher, 2003......)
False belief (FB) sample storyJohn told Emily that he had a Porsche.Actually, his car is a Ford. Emilydoesn’t know anything about carsthough, so she believed John.—When Emily sees John’s car shethinks it is aporsche ford
False photograph (FP) sample storyA photograph was taken of an apple hangingon a tree branch. The film took half an hour todevelop. In the meantime, a strongwind blew the apple to the ground.—The developed photograph shows the apple on theground branch
R-TPJ shows greatest specificity for reasoning about mental states. Contrast with mPFC, which also shows activity for thinking about body states, internal sensations and personal characteristics.
So is this the ToM module?
Why ToM cannot be a Fodor-module
• According to Fodor (1983, 2000) deciding what we believe is an archetypal “central” process
?
Why ToM cannot be a Fodor-module
• According to Fodor (1983, 2000) deciding what we believe is an archetypal “central” process
• It would be odd, in the extreme, if deciding what we believed someone else believed were somehow modular
??
What might we expect Mindreading to involve?
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in school
you can’t concentrate?
You was caned? Respect man,
respect
What might we expect Mindreading to involve?
• Conceptual knowledge about mental states
• Represent alternative perspectives
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in school
you can’t concentrate?
You was caned? Respect man,
respect
What might we expect Mindreading to involve?
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in school
you can’t concentrate?
You was caned? Respect man,
respect
What might we expect Mindreading to involve?
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective• Make abductive, “best guess”
inferences • Do this in the context of relevant
social scriptsWell, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in school
you can’t concentrate?
You was caned? Respect man,
respect
Neuroimaging studies that are starting to cast light on these functions, and their neural correlates
Belief-desire reasoning
• Young children pass true belief tasks (~3Y) before false belief tasks (~4Y) (e.g., Bartsch & Wellman, 1988)
Diffi
culty
B+ B-
True belief
False belief
Belief-desire reasoning
• Young children pass true belief tasks before false belief tasks (e.g., Bartsch & Wellman, 1988)
• Young children pass false belief tasks at ~4 years when protagonist wishes to find object, but not until ~5 years when protagonist wishes to avoid object (e.g., Cassidy, 1998; Friedman & Leslie, 2004)
True belief
False belief
Diffi
culty
B+ B-
D-
D+
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
Behavioural study(Apperly et al., 2011, Ch.Dev.;
0
0.1
0.2
0.3
0.4
0.5
0.6
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Pro
po
rtio
n o
f err
ors
D+
D-
0
500
1000
1500
2000
2500
3000
3500
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Res
pons
e Ti
me
(ms)
D+
D-
Children’s dataApperly, Warren, et al. (2012)
RT to correct responses Errors
Main Effects: Belief, Desire, AgeAge*Desire – but Desire significant at all ages
Diffi
culty
B+ B-
D-D+
0
0.1
0.2
0.3
0.4
0.5
0.6
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Pro
po
rtio
n o
f err
ors
D+
D-
0
500
1000
1500
2000
2500
3000
3500
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Res
pons
e Ti
me
(ms)
D+
D-
Children’s dataApperly, Warren, et al. (2012)
RT to correct responses Errors
Main Effects: Belief, Desire, AgeAge*Desire – but Desire significant at all ages
Main Effects: Belief, Desire, AgeAge*Desire –Desire significant only at 6-7 and 8-9
Diffi
culty
B+ B-
D-D+
0
0.1
0.2
0.3
0.4
0.5
0.6
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Pro
po
rtio
n o
f err
ors
D+
D-
0
500
1000
1500
2000
2500
3000
3500
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Res
pons
e Ti
me
(ms)
D+
D-
Adults’ data
RT to correct responses Errors
Diffi
culty
B+ B-
D-D+
Belief, DesireBelief*Desire – all comparisons significant
Consistent with German & Hehman (2006)
0
0.1
0.2
0.3
0.4
0.5
0.6
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Pro
po
rtio
n o
f err
ors
D+
D-
0
500
1000
1500
2000
2500
3000
3500
B+ B- B+ B- B+ B- B+ B-
6-7Y 8-9Y 10-11Y Adults Adults
Belief
Res
pons
e Ti
me
(ms)
D+
D-
Adults’ data
RT to correct responses Errors
Diffi
culty
B+ B-
D-D+
Belief, DesireBelief*Desire – all comparisons significant
Belief, not Desire
Consistent with German & Hehman (2006)
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
Behavioural study(Apperly et al., 2011, Ch.Dev.;
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
• B- is harder than B+
• D- is harder than D+
• This replicates findings from children and adults
– (Apperly et al., 2011, Ch.Dev.;
Belief (True vs. False) TPJ, ACC, IFGDesire (Like vs. Hate) TPJ, ACC
Overlap
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
Belief (True vs. False) TPJ, ACC, IFGDesire (Like vs. Hate) TPJ, ACC
Overlap
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
Notably no mPFC
Belief-desire task vs. ToM-localiser
Belief OR Desire“ToM localiser” (False Belief – False Photo)OverlapConjunction analysis between Belief-Desire and ToM Localiser
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
• Varying Belief and Desire (not belief or desire per se) modulates activity in– “control” areas (ACC) – perhaps reflecting variation in condition difficulty– “ToM” areas (bilateral TPJ)
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
• Varying Belief and Desire (not belief or desire per se) modulates activity in– “control” areas (ACC) – perhaps reflecting variation in condition difficulty– “ToM” areas (bilateral TPJ)
• Varying Belief (but not Desire) modulates– “control” areas (IFG – R-IFG in particular) – only B- vs. B+ involves a perspective
difference
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
• Varying Belief and Desire (not belief or desire per se) modulates activity in– “control” areas (ACC) – perhaps reflecting variation in condition difficulty– “ToM” areas (bilateral TPJ)
• Varying Belief (but not Desire) modulates– “control” areas (IFG – R-IFG in particular) – only B- vs. B+ involves a perspective
difference
• Why are “control” areas not observed in ToM localiser?– False Photo subtracts this from False Belief
Orthogonal variation of beliefs and desires(Hartwright, Apperly & Hansen, 2012)
• Varying Belief and Desire (not belief or desire per se) modulates activity in– “control” areas (ACC) – perhaps reflecting variation in condition difficulty– “ToM” areas (bilateral TPJ)
• Varying Belief (but not Desire) modulates– “control” areas (IFG – R-IFG in particular) – only B- vs. B+ involves a perspective
difference
• Why are “control” areas not observed in ToM localiser?– False Photo subtracts this from False Belief
• Why is mPFC observed in localiser but not our task?– Our task does not require abductive “uncertain” inferences
Social abduction(Hartwright, Apperly & Hansen, subm.)
Selective for D?
TB vs. FB
Green = D? vs. D-&D+
Green = D? vs. D-&D+&FB&TB
Background: The neural basis of “theory of mind”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFClPFC
Precuneus
TPJ
TP
Anterior
lPFClPFC
PCLateral prefrontal cortex
Right lateral view
We don’t know how these regions work together
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Automatic perspective-taking?(Samson, Apperly, Braithwaite et al., 2010, JEP:HPP)
You / He
You / He
2
2
Self / Other Consistent
Self / Other InconsistentDisc position varies
1,2, or 3 discs
You / He
You / He
2
2
Self / Other Consistent
Self / Other InconsistentDisc position varies
1,2, or 3 discs
Automatic perspective-taking?(Samson, Apperly, Braithwaite et al., 2010, JEP:HPP)
Main effect of consistencySignificant interaction
400
450
500
550
600
650
700
750
800
850
900
Self Other Self Other Self Other
Discs vary Figure varies Blocked
Consistent
InconsistentRT (m
s)
Egocentric interference on explicit judgement of other
Automatic perspective-taking?(Samson, Apperly, Braithwaite et al., 2010, JEP:HPP)
Main effect of consistencySignificant interaction
400
450
500
550
600
650
700
750
800
850
900
Self Other Self Other Self Other
Discs vary Figure varies Blocked
Consistent
InconsistentRT (m
s)
Altercentric interference =evidence of automatic calculation of perspective
Automatic perspective-taking?(Samson, Apperly, Braithwaite et al., 2010, JEP:HPP)
Main effect of consistencySignificant interaction
400
450
500
550
600
650
700
750
800
850
900
Self Other Self Other Self Other
Discs vary Figure varies Blocked
Consistent
InconsistentRT (m
s)
Various follow-ups.....
Altercentric interference = evidence of automatic calculation of perspective
Automatic perspective-taking?(Samson, Apperly, Braithwaite et al., 2010, JEP:HPP)
Automatic perspective-taking?(Samson, Apperly, Braithwaite et al., 2010, JEP:HPP)
Only ever judge “self” – how many dots you can see
500
550
600
650
700
750
800
Self - avatar distractor Self - rectangle distractor
Experiment 3R
eact
ion
tim
e (m
s)
Consistent
Inconsistent* ns
Automatic perspective-taking?(Samson, Apperly, Braithwaite et al., 2010, JEP:HPP)
Only ever judge “self” – how many dots you can see
Automatic and controlled processes within a perspective-taking problem?
Main effect of consistencySignificant interaction
400
450
500
550
600
650
700
750
800
850
900
Self Other Self Other Self Other
Discs vary Figure varies Blocked
Consistent
InconsistentRT (m
s)
Altercentric interference = indication of automatic perspective calculation
Calculation Selection Response
SelfSelf Yes
Other
Automatic and controlled processes within a perspective-taking problem?
Main effect of consistencySignificant interaction
400
450
500
550
600
650
700
750
800
850
900
Self Other Self Other Self Other
Discs vary Figure varies Blocked
Consistent
InconsistentRT (m
s)
Altercentric interference = indication of automatic perspective calculation
Dual tasking
Calculation Selection Response
SelfSelf Yes
Other
Cognitively effortful perspective selectionQureshi, Apperly & Samson (2010) Cognition.
0
200
400
600
800
1000
1200
Alone Dual Alone Dual
Other Self
Pro
cess
ing
co
sts
(RT
/pro
p.
corr
ect)
Consistent
Inconsistent
Altercentric interference is increased by dual tasking with an executive task
Background: The neural basis of “theory of mind”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFClPFC
Precuneus
TPJ
TP
Anterior
lPFClPFC
PCLateral prefrontal cortex
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Background: The neural basis of “theory of mind”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFClPFC
Precuneus
TPJ
TP
Anterior
lPFClPFC
PCLateral prefrontal cortex
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Background: The neural basis of “theory of mind”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFClPFC
Precuneus
TPJ
TP
Anterior
lPFClPFC
PCLateral prefrontal cortex
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Background: The neural basis of “theory of mind”
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFClPFC
Precuneus
TPJ
TP
Anterior
lPFClPFC
PCLateral prefrontal cortex
Right lateral view
We don’t know how these regions work together
e.g. Frith & Frith, 2003 Van Overwalle, 2009
Predictions for an ERP study
• Functionally, we have evidence for an initial process of perspective calculation followed by a later process of perspective selection
• Calculation: Where do we first see discrimination between Self and Other conditions? (Anterior/Frontal versus Posterior/Temporo-parietal)
• Selection: Predict later process in lPFC (perhaps right lPFC), that differentiates Congruent and Incongruent conditions.
ERP study(McCleery et al., 2011, Journal of Neuroscience)
• Pilot study (N=8) identified electrode sets in which we observed differentiation of conditions.
• Main study (N=17) 192 trials per condition• Behavioural effects
– Self<Other in RTs– Consistent<Inconsistent in RTs and Errors– Effect of Consistency was greatest for Other
• ERP recorded from onset of picture
Perspective calculation:450ms Self<Other latency over posterior scalp
Confirmatory source analysis suggested Bilateral TPJ
Perspective selection:LSW (600-800ms) Inconsistent<Consistent amplitude over right anterior scalp
Right inferior frontal gyrus was the only source to discriminate Inconsistent<Consistent for both Self and Other
ConclusionsPrimacy for posterior regions in perspective calculation – at least for simple
perspectives
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFClPFC
Precuneus
TPJ
TP
Anterior
lPFClPFC
PCLateral prefrontal cortex
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
ConclusionsRole for non-ToM “control network” in perspective selection
Temporo-parietal junction
Temporal pole
Medial prefrontal cortex
Left lateral view
TPJ
TP
Medial view
mPF
C
Anterior Posterior
PC TPJ
TPmPFClPFC
Precuneus
TPJ
TP
Anterior
lPFClPFC
PCLateral prefrontal cortex
Right lateral view
e.g. Frith & Frith, 2003 Van Overwalle, 2009
What might we expect Mindreading to involve?The “ToM network”
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective• Make abductive, “best guess”
inferences • Do this in the context of relevant
social scripts
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in
school you can’t concentrate?
You was caned? Respect man,
respect
TPJ
TP
Right lateral view
Medial view
mPF
C
PC
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective• Make abductive, “best guess”
inferences • Do this in the context of relevant
social scripts
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in
school you can’t concentrate?
You was caned? Respect man,
respect
TPJ
TP
Right lateral view
Medial view
mPF
C
PC
What might we expect Mindreading to involve?The “ToM network”
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective• Make abductive, “best guess”
inferences • Do this in the context of relevant
social scripts ?????????
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in
school you can’t concentrate?
You was caned? Respect man,
respect
TPJ
TP
Right lateral view
Medial view
mPF
C
PC
What might we expect Mindreading to involve?The “ToM network”
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective• Make abductive, “best guess”
inferences • Do this in the context of relevant
social scripts
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in
school you can’t concentrate?
You was caned? Respect man,
respect
TPJ
TP
Right lateral view
Medial view
mPF
C
PCACC
What might we expect Mindreading to involve?Cognitive control
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective• Make abductive, “best guess”
inferences • Do this in the context of relevant
social scripts
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in
school you can’t concentrate?
You was caned? Respect man,
respect
TPJ
TP
lPFC
Right lateral view
Medial view
mPF
C
PC
What might we expect Mindreading to involve?Cognitive control
ACC
• Conceptual knowledge about mental states
• Represent alternative perspectives• Keep up!• Avoid interference from self
perspective• Make abductive, “best guess”
inferences • Do this in the context of relevant
social scripts
• ???Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in
school you can’t concentrate?
You was caned? Respect man,
respect
TPJ
TP
lPFC
Right lateral view
Medial view
mPF
C
PC
What might we expect Mindreading to involve?Cognitive control
ACC
• Conceptual knowledge about mental states• Represent alternative perspectives• Keep up!• Avoid interference from self perspective• Make abductive, “best guess” inferences • Do this in the context of relevant social
scripts
• Whether or not these particulars are correct.....
• “Where is the ToM module” is a poorly conceived question
• Functional and neural studies are combining to give new insights into what ToM is, and how we do it.
Well, I was caned in my time and I’ve concentrated all my life
Do you not think, Sir Rhodes, if you get caned in
school you can’t concentrate?
You was caned? Respect man,
respect
TPJ
TP
lPFC
Right lateral view
Medial view
mPF
C
PC
What might we expect Mindreading to involve?
ACC
Orthogonal variation of mental/non-mental and ambiguous/unambiguous inferences(Jenkins & Mitchell, 2009, Cereb.Cortex.)
Orthogonal variation of mental/non-mental and ambiguous/unambiguous inferences(Jenkins & Mitchell, 2009, Cereb.Cortex.)
Main effect of Mental/non-mental in rTPJMain effect of ambiguous/unambiguous in mPFC