“Nature vs Nurture: The attle For the ontrol of ehavior” and Training... · “Nature vs...
Transcript of “Nature vs Nurture: The attle For the ontrol of ehavior” and Training... · “Nature vs...
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“Nature vs Nurture: The Battle For the Control of Behavior”
CJABApril 4 2018
James (Jim) FallonProfessorPsychiatry and Human BehaviorAnatomy and NeurobiologyUniversity of California, Irvine
FALLON
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IDENTITYand the nature-nurturequestion
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How many unique humans can there be?
GENES (20% of “genome”)~21,000 coding genes~10 promoters per gene~4,000,000 RNA regulators~ 4,000,000 SNPs (single nucleotide polymorphisms)~100 copy number variants (CNVs) per person~500,000 insertion-deletions (INDELS) per person~ 100,000 transversions
NON CODING transposons (80% of genome)So about the same number as genes, but also tissue specific= 1061 number based on genetics + 109? epigenetic combos = 1070 number of possible individuals + 1010? mutations
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1 x 103 = 1 thousand1 x 106 = 1 million1 x 109 = 1 billion1 x 1012 = 1 trillion1 x 1015 = 1 quadrillion1 x 1018 = 1 quintillion1 x 1021 = 1 sextillion1 x 1024 = 1 septillion1 x 1027 = 1 octillion1 x 1030 = 1 nonillion1 x 1033 = 1 decillion
1 x 1036 = 1 undecillion1 x 1039 = 1 duodecillion1 x 1042 = 1 tredecillion1 x 1045 = 1 quattuordecillion1 x 1048 = 1 quindecillion1 x 1051 = 1 sexdecillion1 x 1054 = 1 septendecillion1 x 1057 = 1 octodecillion1 x 1060 = 1 novemdecillion1 x 1063 = 1 vigintillion1 x 1066 = 1 unvigintillion
1 x 1069 = 1 duovigintillion1 x 1072 = 1 trevigintillion1 x 1075 = 1 quattuorvigintillion1 x 1078 = 1 quinvigintillion
1 x 1081 = 1 sexvigintillion1 x 1084 = 1 septenvigintillion1 x 1087 = 1 octovigintillion1 x 1090 = 1 novemvigintillion1 x 1093 = 1 trigintillion1 x 1096 = 1 untrigintillion1 x 1099 = 1 duotrigintillion1 x 10100 = 1 googol
How many unique humans can there be?
…so, referencing this otherwise useless chart…..
FALLON
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1 x 1081
possible unique humans
And there are 1082 atoms in the universe
About the same as the numberof possible unique humans…So no two humans will ever be the same….
But it gets a touch more complicated than thatFALLON
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Transposons 3 most vulnerabletimes for epigeneticmodifications due tostressors, etc
1-Postconception2-Postnatal3-Pre-conception
Alterations in sperm
FALLON
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IDENTICAL TWINS
Aren’t identical twins genetically identical?
NEVERFALLON
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FALLON
COPY NUMBER VARIANTS
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1) One of the arguments often heard from prosecutorsis when defendants have siblings that….
“have the same DNA and were raised in the same abusive household but they didn’t commit a capital offense.”
How does a defense attorney create a dialogue which will engage jurors?
2) What is the more important determinant ofNormal vs criminal behavior?
Two thought experiments you should be able to answer within the hour….
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DIAGNOSISvs Traits
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CATEGORICAL DIAGNOSISVS TRAITS
EXAMPLE
OBSESSIVE AND COMPULSIVE PERSONALITY TRAITS
VS
OBSESSIVE COMPULSIVE DISORDER
VS
OBSESSIVE COMPULSIVE PERSONALITY DISORDER
FALLON
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FROM TRAITS TO CATEGORICAL DIAGNOSIS
FALLON
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MOST PEOPLE WITH THESE
PERSONALITY DISORDERS HAVE
EXPERIENCED
SERIOUS EARLY
CHILDHOOD TRAUMA
AND/OR
ABANDONMENT
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Psychopathy
High vulnerability genetic alleles
Functional brain lossorbital/medial PFC, amygdala
EarlyAbuse
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TWO BIOLOGICAL DETERMINANTS (“NATURE” –i.e., basic genes and brain connections) PERMANENTLY ALTERED EPIGENETICALLY BY EARLY TRAUMA (“NURTURE” i.e., environment)
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GENES ENVIRONMENTEPIGENOME
BRAINPHYSIOLOGY
BEHAVIOR
3
EPIGENOME
FALLONTIMING OF THE TRAUMA IS VERY IMPORTANT
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PROTEOME
Messenger
GENOME
BEHAVIORSTRANSCRIPTOME
EPIGENOME
CONNECTOME 3
DISORDER
CONNECTOME 2
CONNECTOME 1
CONNECTOME
FALLON
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DIAGNOSISvs Traits
FALLON
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FALLON
CRIMINALPOPULATION
FACTOR 1
FACTOR 2
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Psychopathic Personality Inventory (PPI)-
not necessarily criminal or aspd- asps based on behavioral patterns vs personality/character traits. Psychopathic Personality Inventory: Factors and Subscales
PPI–1: Fearless dominanceSocial influenceFearlessnessStress immunity
PPI–2: Impulsive AntisocialityMachiavellian egocentricityRebellious nonconformityBlame externalizationCarefree nonplanfulness
Also ColdheartednessTheodore Roosevelt (1.462)John F. Kennedy (1.408)Franklin D. Roosevelt (1.079)Ronald Reagan (.912)
More useful forthe normalpopulation
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FALLON
Personality DisordersAnd Crime: Psychopathy
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The most perniciously criminal psychiatric disorders:Personality Disorders, Cluster B- ASPD/Psychopathy and NPD
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FALLON
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“PSYCHOPATH” “SOCIOPATH”
“FOLLOWER” “LEADER”FALLON
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FALLON
NEURONATOMICALCONNECTIONS
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Some pervasive common traitsin pernicious personality disordersof interest to criminality
Aggression and violenceLack of moral reasoningLack of emotional empathy
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FALLON
Underactive areas of the psychopath brain
AMYGDALA
ORBITAL CORTEX
MEDIAL PREFRONTAL CORTEX
CINGULATE CORTEX
Also called the “LIMBIC LOBE” also part of SOCIAL BRAIN
INSULA
PARAHIIPOCAMPAL
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normal normal Psychopathic pattern
FALLON
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Two Empathy Axes, Four kinds of Empathy
Cognitive Empathy
Emotional Empathy
Out-Group Empathy
In-Group Empathy
FALLON
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Emotional Empathy vs Cognitive Empathy
FALLON
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FALLON
Emotional vs Cognitive Empathy
Emotional Cognitive
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Bullies and SadismJean Decety
FALLON
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FALLON
KEY EPOCHS OF FRONTAL LOBEBRAIN DEVELOPMENT
BRAIN DEVELOPMENT
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BIRTH PUBERTY LATE TEENS FIRST MATURITY
SECONDMATURITY
PEAK BRAINMATURITY &
PERFORMANCE
DEATH
CRITICAL PERIODS of brain development
18-219-14 24-27 33-40 Late 60s0 - 3
FALLON
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The pre-teenage prefrontal system
Fallon
HOT COGNITION
COLD COGNITION
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The maturing (and switching) teenage prefrontal system
Fallon
HOT COGNITION
COLD COGNITION
FALLON
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The mature adult prefrontal system in balance
Fallon
HOT COGNITION
COLD COGNITION
mens rea?
FALLON
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Competition for control of emotional behavior
FallonFALLON
AMYGDALA
ORBITAL/VENTROMEDIALCORTEX
NUCLEUS ACCUMBENS
BEHAVIOR
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FALLON
GENES
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General Psychiatric traits and GeneticsGENE Example Effect Some Interactions Positive vs Negative Effect
MAO-A serotonin levels Early abuse Abuse inc aggression
Serotonin Early environment Abuse-PsychopathyTransporter SERT affects aggression Love- Offsets aggression
Oxytocin Affects bonding Self vs Other/Group Focus Self- inc. interpersonal bond
Group- increase lying for group
Unequal $$$ gains Inc. envy, schadenfreude
COMT Dopamine levels PFC val-val WARRIOR less efficient PFCmet-met WORRIER more efficient PFC
BDNF Memory and Anxiety normal val66met- inc memory, inc anxietyval-val dec anxiety, dec memory
stress childhood- met stronger effect
teen, adult- oppositegender x BDNF val female- inc limbic
FALLON
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MAOA-L (“warrior gene”)“High Risk” serotonin transporter NE transporterTH [TPH1,2]Androgen receptorDAGK1DBHCOMTNOS1
+ low emotional empathy alleles
Aggressionand violence
Psychopathic traits and Genetics
FALLON
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Empathy, altruism genetics
Oxytocin receptor OXTR G more emp than ATestosterone receptor more T, less generousVasopressin receptor AVPR1AGABA GABRB3 empathy varianceDopamine DRD4, DRD5 KIN VS NON KIN em altruismIGF2COMTOXY related CD38CRF GRIN1 cortisol
FALLON
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Transmitter Summary Low Levels
Norepineprine (NE) Serotonin (5-HT)
GABA MAO
High Levels
Dopamine (DA)Glutamate
Leads to sensitivity to reward mechanisms, sensation-seeking behavior, and the tendency to express oneself more aggressively.
SASHA REID FALLON
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FALLON
EPIGENETICS
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FALLON
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Brain DevelopmentNormal
Genetic Mutation
Brain Development Disorder
SCHIZOPHRENIADEPRESSIONALZHEIMERS
PERSONALITYDISORDERS
e.g.PSYCHOPATHY
Epigenetic Modifications
FALLON
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FALLON
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EXTREME STRESS
COCAINE
EARLY TRAUMA
MATERNAL BEHAV
TOXINS
ABANDONMENT
FOODS
HISTONEMODIFICATION
DNAMETHYLATION
EPIGENETICEFFECTS
GENES
FALLON
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FALLON
Psychopathy vsSociopathyvsPTSD
Epigenetic differences:
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FALLON
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TRANSGENERATIONAL EPIGENETIC EFFECTS
FALLON
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FALLON
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Transgenerational epigeneticviolence- from neighborhoods
to the world
FALLON
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1) One of the arguments often heard from prosecutorsis when defendants have siblings that….
“have the same DNA and were raised in the same abusive (or normal) household but they didn’t commit a capital offense.”
How does a defense attorney create a dialogue which will engage jurors?
2) What is the more important determinant ofNormal vs criminal behavior?
Two thought experiments you should be able to answer within the hour or so….
FALLON
What is “Good” for the speciesIs often “Evil” for family life