Origins of Criminal Behavior: Biological Factors
Summary
TLDRThis educational screencast delves into the complex interplay between biological factors and criminal behavior. It explores the age-old nature versus nurture debate, emphasizing the role of genetics, brain structure, neurotransmitters, and hormones. The lecture highlights the use of twin studies to discern genetic influences, noting the higher concordance rates in identical twins for conditions like ADHD. It also touches on epigenetics, showing how environmental factors can alter gene expression. The discussion suggests that while genetics may predispose individuals, environmental triggers are crucial for the manifestation of criminal tendencies, advocating for a 'nature via nurture' perspective.
Takeaways
- 🧬 The debate between nature and nurture's role in criminal behavior is discussed, suggesting that both genetic and environmental factors are significant.
- 🔬 Studying twins, particularly identical versus fraternal, provides insights into the genetic predispositions to certain behaviors, including criminal tendencies.
- 🧬 Identical twins share the same DNA, which allows researchers to isolate the impact of genetics on behavior compared to fraternal twins who share a womb but not identical DNA.
- 🧬 Epigenetics plays a role in how genes are expressed, showing that even identical twins can have different outcomes due to environmental influences.
- 🧠 The study of psychophysiology reveals that criminals may have different physiological responses, such as fear, which could be linked to their behavior.
- 🧠 The frontal lobe's role in executive functioning and its potential damage leading to impulsive behavior is highlighted, suggesting a neurological basis for criminal behavior.
- 👶 Prenatal factors such as exposure to toxins and birth complications can influence future behavior, possibly predisposing individuals to criminality.
- 🧪 The case of Phineas Gage illustrates how brain injury can drastically change personality and behavior, hinting at the importance of neurological health.
- 🌐 Hans Eysenck's theory of personality is mentioned, suggesting that extroverted and emotionally unstable individuals might be more prone to criminal behavior.
- 📚 The importance of reading the textbook for detailed studies and further understanding of the topics covered in the screencast is emphasized.
Q & A
What is the main topic discussed in the script?
-The main topic discussed in the script is the exploration of biological factors that may predispose individuals to criminal behavior, including genetics, brain structures, neurotransmitters, and hormones.
What is the nature versus nurture debate mentioned in the script?
-The nature versus nurture debate refers to the longstanding discussion about whether human behavior is determined by genetic inheritance (nature) or by experiences and the environment (nurture). The script suggests that this debate may not be as clear-cut as previously thought.
How can the impact of genetics versus environment on criminal behavior be studied?
-The impact of genetics versus environment on criminal behavior can be studied by examining DNA, comparing identical (monozygotic) twins with fraternal (dizygotic) twins, and considering epigenetic factors that influence gene expression.
What is the significance of studying identical and fraternal twins in the context of criminal behavior?
-Identical twins share the same DNA, while fraternal twins do not. By comparing their behaviors, researchers can estimate the influence of genetics on criminal behavior, as any differences in behavior would be more likely due to environmental factors.
What are epigenetic factors and how do they relate to the expression of genes?
-Epigenetic factors are influences from the environment that can turn genes on or off without changing the underlying DNA sequence. They play a role in how genes are expressed, meaning that even identical twins can have different traits and behaviors due to environmental influences.
What is the concordance rate in the context of twin studies?
-The concordance rate refers to the percentage of identical (monozygotic) versus fraternal (dizygotic) twins who both exhibit a particular trait or behavior, such as criminal behavior. It helps to indicate the genetic influence on that trait or behavior.
How does the script suggest that the nature versus nurture debate has evolved?
-The script suggests that the nature versus nurture debate has evolved to recognize that both genetic predispositions and environmental factors play significant roles in shaping behavior, rather than one being solely responsible.
What is the role of psychophysiology in understanding criminal behavior as discussed in the script?
-Psychophysiology examines the relationship between psychological processes and physiological functions. The script mentions that individuals with criminal tendencies may have different physiological responses to stimuli, such as fear, which could be linked to their behavior.
What is the significance of the Phineas Gage case in understanding the impact of brain injuries on behavior?
-The Phineas Gage case is significant because it demonstrates how damage to specific parts of the brain, particularly the frontal lobes, can lead to drastic changes in personality and behavior, suggesting a neurological basis for certain behaviors.
How does the script relate Hans Eysenck's theory of personality to criminal behavior?
-The script relates Hans Eysenck's theory of personality, particularly the dimensions of extraversion and emotional stability, to criminal behavior by suggesting that individuals who are extroverted and emotionally unstable may be more prone to criminal activities.
Outlines
🧬 Biological Factors in Criminal Behavior
This paragraph introduces the concept of biological factors potentially predisposing individuals to criminal behavior. It raises questions about the nature of these factors, such as genetic influences, brain structures, neurotransmitters, and hormones. The paragraph also touches on the age-old debate of nature versus nurture, referencing John Locke's tabula rasa and its adoption by Watson, suggesting that environment can significantly shape a person's behavior. The speaker emphasizes the importance of studying genetics and environment together to understand criminal behavior and mentions the use of DNA and twin studies as methods to explore this impact. The paragraph concludes by hinting at the complexity of the nature-nurture debate and the potential obsolescence of this dichotomy.
👶 The Study of Twins: Nature vs. Nurture
The paragraph delves into the use of twin studies to understand the influence of genetics versus environment on behavior. It explains the difference between monozygotic (identical) and dizygotic (fraternal) twins, noting that identical twins share the same DNA, which makes them ideal for studying genetic influences. The speaker discusses how concordance rates between twins can indicate the impact of genetics, using examples such as schizophrenia and ADHD to illustrate the point. The paragraph also mentions the case of identical twins, Steven and Robert Spolki, who both exhibited criminal behavior, suggesting a genetic component. The idea of a large prison study to compare monozygotic and dizygotic twins' criminal backgrounds is proposed to further explore the genetic influence on criminal behavior.
🧬 Beyond DNA: Epigenetics and Environmental Influences
This paragraph explores the complexity of genetic influence on behavior by introducing epigenetics. It explains that while identical twins share the same DNA, environmental factors can affect gene expression, making them not entirely identical. The concept of epigenetics, where the environment signals genes to turn on or off, is discussed, using examples such as the thickening of feet from being barefoot and the development of calluses on guitar players' fingers. The paragraph also mentions that even with identical genes, environmental differences can lead to different expressions of those genes, thus impacting behavior. It concludes with a quote from Adrien Rain, suggesting that genetics contribute moderately to criminal behavior, but environmental factors are also crucial, marking the end of the nature versus nurture debate and emphasizing the interplay between the two.
🚨 Psychophysiological Correlates of Criminal Behavior
The paragraph discusses the psychophysiological aspects of criminal behavior, focusing on how the nervous system of criminals might respond differently to stimuli compared to non-criminals. It mentions that violent or antisocial individuals often show lower physiological arousal when exposed to graphic images. The speaker uses the example of Travis Pastrana, a daredevil, to illustrate fearlessness and links it to possible biological or genetic differences. The paragraph also introduces the concept of temperament, suggesting it is a stable trait throughout life and can be influenced by prenatal factors such as birth complications and exposure to toxins. The famous case of Phineas Gage is highlighted to demonstrate how brain injury can lead to significant changes in personality and behavior, hinting at the role of neurological factors in criminal behavior.
🧠 Frontal Lobe Function and Criminal Tendencies
This paragraph continues the discussion on the neurological factors influencing criminal behavior, focusing on the frontal lobes and their role in executive functioning. It describes how damage to the frontal lobes, as in the case of Phineas Gage, can lead to impulsive behavior and personality changes. The speaker mentions that individuals with frontal lobe injuries often exhibit traits similar to those seen in criminals, such as impulsivity. The paragraph also touches on the theories of Hans Eysenck, discussing the relationship between introversion/extroversion and central nervous system arousal. It suggests that extroverted individuals, due to their low arousal levels, might be more prone to seek excitement and engage in criminal behavior. The speaker shares an anecdote about an experiment conducted in a class to demonstrate the differences in saliva production in introverted and extroverted students in response to a sour candy,寓意着 central nervous system arousal.
🌟 Extroversion, Emotional Stability, and Criminal Behavior
The final paragraph builds on Eysenck's theories, examining the personality traits associated with introversion and extroversion and their potential links to criminal behavior. It discusses how extroverted individuals with low levels of central nervous system arousal might engage in criminal activities to increase their arousal. The paragraph also explores the concept of emotional stability, suggesting that emotionally unstable extroverts might exhibit personality traits similar to those of criminals, such as aggressiveness and impulsivity. The speaker encourages students to read the textbook for more detailed information on the studies mentioned and concludes by mentioning the next topic, psychopathy, which is a favorite subject for further exploration.
Mindmap
Keywords
💡Biological factors
💡Nature versus nurture
💡Genetics
💡Twins studies
💡Epigenetics
💡Concordance rates
💡Psychophysiology
💡Temperament
💡Prenatal factors
💡Neurological factors
Highlights
Introduction to the exploration of biological factors that may predispose individuals to criminal behavior.
Emphasis on the importance of the textbook for detailed studies and specific research findings.
Discussion of the age-old nature versus nurture debate in relation to criminal behavior.
Historical reference to John Locke's tabula rasa concept and its influence on behaviorist theories.
Proposal to study the impact of genetics versus environment on criminal behavior through DNA analysis.
Explanation of the use of twin studies, particularly identical versus fraternal twins, to understand genetic influences.
Statistics on the heritability of disorders like ADHD and the implications for understanding criminal behavior.
Description of the differences between monozygotic (identical) and dizygotic (fraternal) twins in genetic and environmental terms.
Case study of identical twins with criminal tendencies, highlighting the potential genetic factors in crime.
Introduction to the concept of epigenetics and how environmental factors can influence gene expression.
Example of epigenetics in action: how lifestyle choices can affect gene expression, such as foot thickness in homeless individuals.
Review of research suggesting that genetics contribute moderately to criminal behavior, especially nonviolent crime.
The declaration that the nature versus nurture debate is outdated, emphasizing the interplay between genetics and environment.
Discussion on psychophysiological factors related to criminal behavior, such as fearlessness and physiological responses to fear.
Mention of the famous case of Phineas Gage and the impact of brain injury on personality and behavior.
Eysenck's theory on personality types and how they relate to criminal behavior, particularly introversion and neuroticism.
Encouragement for students to read the textbook for more detailed information and to engage with the material.
Transcripts
could it be that there are biological
factors that predispose someone to
criminal
Behavior what might those biological
factors be this screencast is a brief
introduction we'll cover this in far
more detail during the rest of the
semester and don't neglect your textbook
because the textbook goes into detail
and covers the specific studies which I
won't do here um so don't neglect that
but what is it is is there something
that drives criminal behavior is it
something in the genes is it brain
structures neurotransmitters hormones
what could it be well this really brings
us to the old nature versus nurture
debate I like that picture there and
this debate has gone on for a long long
time uh you might remember John Lock's
conceptualization of the tabar rasa that
was later basically taken up
by uh
Watson so he thought that he could take
any child and based on environmental
interactions or
nurture he could get them to become a
doctor a lawyer or a criminal based on
how you reinforce that behavior but on
the other side are there genes the
nature side is there something that
drives Behavior well that's what we're
going to talk about in this chapter uh
primarily but you'll see in a little bit
that this nature versus nurture
debate might not be as valid as we once
thought it
was so how can we study the impact of
genetics versus environment on criminal
Behavior take a second to think about
that what could we
do
well we could look at DNA and we've had
the ability to do that since the 90s but
how about before that is there any way
that you can think of that we could
study the impact of genes versus
environment if you really think about it
your DNA every cell in your body has
your complete set of genetic
code there you can see the DNA Helix
that makes you what you are who you
are there's the DNA Helix
there but we haven't had the ability to
read your genetic code for that long and
you know what frankly that's pretty
expensive and we could identify specific
genes but there's something more to this
what if we looked at twins not these
kind of twins I you might be too young
to remember that movie it wasn't a very
good movie but more like these kind of
twins Mary Kate and Ashley there they're
identical twins so theoretically they're
basically like clones of each other they
start off with the same
DNA so what if we could take identical
twins or monozygotic Twins and compare
them to fraternal twins or dizygotic
Twins and we look at their behavior now
researchers have been doing this in the
field of psychology and medicine for
years and years and years so if you have
an identical twin that has let's say
schizophrenia you have roughly about a
50% % chance of having schizophrenia
yourself one of my favorite disorders
ADHD is one of the most highly heritable
disorders and if your identical twin has
ADHD you have about a 75% chance of
having
ADHD now the fraternal twins it's far
less so what that does is it gives us an
IDE aide as to the impact of those
specific genes because you have your
identical twin you have your fraternal
twin and theoretically you're raised in
the same environment now these two look
different but they look similar enough
and I would hope that their parents
would treat them roughly the same in
their
classmates but genetically they're very
different over here genetically
identical
so I just to review this identical
twins start from one fertilized
egg okay they're a single zygote that
divides into two mono zygotic twins or
identical twins so this is the same DNA
the DNA here in these two cells is
identical but these two cells later
develop into two
people now fraternal twins or dizygotic
twins here you have two
eggs two fertilized
eggs so they have
similar but not identical genetic
material now I don't know too many twins
and if I really think about it I guess I
knew one set of identical twins growing
up and they were they were pretty pretty
similar however you could definitely
tell them apart I mean they looked a lot
alike once you got to know them though
they were they were a little different
why is that think about the twins that
you know the identical twins are they
really
identical okay so we have these
identical twins and we like to think
that the mother here and the father
who's probably off watching TV somewhere
uh is going to treat these children the
same so they're going to have a shared
environment and they have shared
genetics in contrast to the fraternal
twins that would have totally shared
environment but then different genetics
and what we can do then is come up with
Concordance rates so that's a percent of
monozygotic versus dizygotic twins so
you can see the
impact of the
genetics in contrast to the impact of
the
environment all right this is a little
hard to see here sorry about this but
this says although identical twins step
and Robert Bruce spolski were both
Killers each acted alone unaware of the
other's homicidal
tendencies in prison Steven was quoted
as saying I thought I was the only
murderer in the
family what if we took
criminals like
twins and we could find sets of
monozygotic versus dizygotic Twins and
look at the impact of the genes there so
you would identify sets of twins and
then look at criminal
Behavior so you would find one twin
that's a murderer and then you see if
the other one is as
well and both the monozygotic and D
zygotic
Pairs and you would hope that the
monozygotic would have a much higher
concordance rate that would show you the
impact of the genetics so I mean I don't
really think anybody's done this study
but we could do a large prison study
where we
identify uh one pair of uh twins that is
currently incarcerated and then we would
locate the other twin and figure out if
they had a similar criminal back
background that's how that study would
be done or that research would be
done now there's something else that we
could do um and this is a little
different uh Gerald Levi here and Mark
Newman you can see that those guys look
kind of
similar they're identical twins and I I
just want you to note though that look
at Mark here same jeans Mark is
significantly heavier exact same jeans
different weight so this isn't perfect
but what's unique about these two is
that they were separated at
Birth
so they were put up for
adoption and they were adopted to
different families now they stayed in
roughly the same area but look at these
two and I don't know if they really
looked this similar before they met each
other but they have a lot of striking
personality characteristics in fact they
both are
firefighters and that's how they
realized that they were identical twins
because a fellow firefighter said hey
you look just like this guy that's a
firefighter 60 Mi up the road they met
each other and realized that hey I'm
adopted you're adopted and they figured
out that they had this shared
history so researchers in the area of
Personality have been doing this work
for a long time if you've taken
personality psychology there's a good
chance that you've seen pictures of
these two guys cuz they're pretty pretty
famous okay but but but but there's a
problem here and that we think that
identical twins have identical
DNA do
they well I don't quite think so now
there's one weird thing there's uh
dionic and
monochorionic uh monozygotic Twins and
so that's like a single placenta versus
a uh two placentas so that's the first
thing
so that uh prenatal environment might
actually be
different now there's something else
it's far more relevant here and these
are called epigenetic factors and here
what happens is that your environment
impacts your genes like you have this
huge genome but it is not
always like on okay so genes are
expressed they're either turned off or
they're turned on genes typically code
for proteins proteins are the building
blocks of life everything in your body
is made up of proteins and the genes are
the the plans for those
proteins okay
so what happens well your environment
signals your genes when to turn on and
when to turn off that's called this
field of study is called
epigenetics okay so I know this example
sounds really bad but uh I use it
frequently and um you know in Florida in
South Florida there's a large uh
homeless
population and when you look at the feet
of the homeless in Florida frequently
they don't wear shoes
so what do their feet look like and I
know this sounds like
politically uh incorrect but it's a good
example so those individuals that walk
around Barefoot I guess I mean there's
lots of people that walk around Barefoot
all the time they don't have to be
homeless but their feet get really
really
thick so they have
genes that react to the environment that
change the thickness of their feet had
they been wearing nice comfy shoes and
taking care of their feet their feet
wouldn't look like that but they have
the genetic
material uh to respond to the
environment like that you have that too
um if you play guitar you might have
calluses on your fingers the body is
going to change in response to the
environment that's epigenetics so even
though you have this genome and you have
a twin that has the exact same genes any
sort of environmental differences are
going to affect how those genes are
expressed so even though you have
identical genes it's not like you're
really
identical and ah again sorry this is
kind of hard to read but this is a quote
and this is uh similar quotes in your
book here in reviewing both twin and
adoption studies research suggests that
genetics contributes moderately to
criminal Behavior more so with
nonviolent crime however environmental
factors are also very important and
that's from ad Adrien rain in a
literature review of all these studies
and there's been over a hundred studies
like this in this area but you know what
like it's really difficult to draw
conclusions from this
um and the major thing that you need to
take out of this is that nature versus
nurtured debate is dead it's over so if
someone ever asks you you know is that
like nature or
nurture um let's say schizophrenia you
always always always always say well
it's a little bit of Nature and a little
bit of nurture so I like to think it of
it as uh nature via nurture so you you
will have genetic predispositions to
things but environmental factors have to
come in in order to see the expression
of those genes
okay now there's other factors that this
uh chapter goes into psychophysiology a
little bit so I'm sure you've heard oh
criminals are fearless they don't
respond to fear the same way that
non-criminals do into some degree that's
that's correct so their nervous system
does seem to respond a little different
uh maybe you'll recognize this guy this
is Travis Pastrana um there he's doing a
double back flip on a motocross bike he
seems to be totally
Fearless why is that is there something
different with his genetics or his
biology
psychophysiology yeah actually there
probably is and you may have seen this
before and we we have talked about this
earlier in the class that's an old
polygraph and what the polygraph
measures is your physiological reactions
and when they hook people up to
Machinery that measures physiological
reactions and show them graphic images
people that are violent or antisocial
don't respond quite the same now does
that mean that that causes the criminal
Behavior no no no no no no no we can't
say it's causitive it's a correlate to
the criminal Behavior so it's like the
Chicken and the Egg which came first we
don't know but they're
related now what might that be and
usually what you see is lower levels of
arousal in antisocial or Psychopaths or
murderers lower levels of physiological
arousal well we'll talk about that in
just a second but the first thing that I
want to talk about is temperament so
your temperament is like your
disposition how you are think about
this uh with little kids or babies
what's their temperament like and you'll
hear parents say oh you know Susie is
such a good baby she's so easy to take
care of she never
cries and then other parents will say oh
my God this kid is a nightmare he's up
all night crying you may have heard of
uh Kaki
babies so what is cic and it's different
in horses I mean in horses it's a
different thing in
babies what is colic now I've heard many
of doctors say well the treatment for
colic what you do is you take a vacuum
cleaner and you put it in the baby's
room when they're all upset you turn the
vacuum cleaner on that soothes the baby
so they'll go to sleep uh the funny
thing is that the doctors might say that
but what that really does is it drowns
out the crying so the parents don't hear
it so they can go to sleep that's that
kid's temperament it's their disposition
and your temperament is really stable
throughout your entire life so if you
are a cranky baby you're going to be a
cranky adolescent teenager and
adult and there are other factors like
prenatal factors
so there might be birth
complications exposure to toxins like
nicotine alcohol drug
exposure uh alcohol exposure can lead to
fetal alcohol syndrome although it's a
lot less rare than we thought and
there's some evidence that shows
nicotine alcohol and drug exposure being
correlated with ADHD but the research
isn't great there so there might be
prenatal factors like that that lead to
later
uh criminal
behavior and then there's going to be
neurological factors we're going to talk
a little bit about the frontal loes um
and the amydala we'll talk about in
later chapters same with hormones
neurotransmitters and then disorders
like epilepsy could those be the root of
criminal
Behavior well one famous case that I'd
like to bring up and the book talks
about briefly is Phineas gauge so I'm
sure you've heard of Phineas gauge every
introductory introduction to psychology
class should cover Phineas gaug but he
worked on a railroad and uh what he was
doing is constructing the railroad and
so they had to like blast a lot of rock
and what they would do is they would
drill a hole into the ground and then
they' put some Dynamite or explosive
down there and then put some sand on top
of it with their little Wick and then
they would take a rod and they would
pack it down in the hole that Rod was
called a tamping rod and so fineas Gage
was a really good worker hard worker
nice guy went to church uh saved his
money and one day as he was using that
tamping Rod he was leaning over the rod
and something happened probably a spark
ignited the dynamite and it shot the rod
up through the hole like a bullet and it
went right
through his eye here and then up through
the top of his head this is actually a
picture of Phineas Gage this is a real
guy and you can see he wasn't that
disfigured I mean he lost an eye and
maybe the way people treated him
afterwards contributed to his behavior
but more importantly he lost a good
chunk of his brain in the accident now
after this thing went up through his
head he stood up he could walk around he
got some help he survived I mean he was
just fine but a good chunk of his brain
was taken out now he probably should
have died and he did have a near-death
experience so you got that but you can
see the path of this tamping rod and it
basically took out his frontal
loes
and we have seen a pattern of behavior
in many many patients that have similar
injuries in fact if you get a frontal
lobe injury you'll probably have similar
behavior and what we call the skills
that the frontal lobe are responsible
for are uh executive functioning skills
so like executive like an executive in a
company those skills that you need to
plan out your life so it's thinking
ahead in the future planning stuff like
that Phineas lost that and his
personality also
changed that's the actual tamping Rod
right there they found these photographs
in like 2010 they thought this was like
a photograph of a whaler and this was a
harpoon but it's not that's Phineas and
that's a tamping rod and he traveled
around after his injury he took the rod
with him he traveled all over North
America and South America and he lived a
pretty functional life but the legend is
that Phineas was or uh Gage was no
longer Gage was a quote from one of his
co-workers so he became a little more
unruly he would
swear um he was uh quicker to anger uh
his work record wasn't as good he
probably stopped going to church he
changed and when people have frontal Lo
injuries they become far more impulsive
and a lot of times they get into trouble
so maybe it's dysfunction with the
frontal loes we'll talk about that more
the next person that I want to talk
about is Hans ICN
and there he is right there and the book
goes into far more detail about this um
I want to talk about this briefly so we
have introversion over here and
extroversion over here now I
think had this is like a on a scale so
on one end you have introverted people
and on the other end you have
extroverted people and what he said was
that this is all about
central nervous system arousal so
remember go back that picture of uh
Travis Pastrana on the motorcycle or
that little kid on the skateboard at the
top of the hill what does that mean in
terms of iyn theory
well introverted people he said have a
lot of central nervous system
arousal and so any type of stimulus
pushes them way over the edge they don't
like like it so they're introverted they
don't seek out exciting activities they
stay within themselves they you know
they don't go outside they don't
interact with friends they're
introverted and here are some of the
character traits that are associated
with people that are introverted
unsociable quiet passive careful that
kind of makes sense now let's think
about somebody that's all the way on the
other end somebody that's
extroverted if you don't know who Travis
Pastrana is think of like a daredevil
like uh evil coneval or
something so I think said the
extroverted people had very low levels
of central nervous system
arousal that's why they're extroverted
because they need to get their arousal
level up so they go out they're active
they socialize with other people they do
exciting things because they need that
level
of um central nervous system arousal to
go up so think about that now I used to
do an experiment in my classes where I
would take um those extreme lemon sour
uh heads I don't know what they're
called uh Atomic Warheads I think
they're called and I would give them to
students and I gave them a measure of
introversion versus
extroversion and so we would figure out
who the introverted students were and
then the extroverted students then I
would give them this really sour candy
and then have them measure the amount of
spit that was produced in response to
the candy now this that's like central
nervous system arousal and the idea is
that introverted people who already have
a high level of arousal will respond a
lot more and they're not going to find
that situation pleasurable so they're
going to produce a lot more saliva
whereas extroverted people have that low
level of central nervous system arousal
they eat that candy and it's just a
little tiny bump up now we never did
statistical analysis but that research
study was done a long long time ago and
I was trying to replicate that and they
show that that is in fact correct now if
we took an introverted person and showed
them pictures of a violent crime scene
and then measured heart rate respiration
uh sweating on their skin or galonic
skin response the introverted person's
responses should go way
up whereas the extroverted person
they'll just have like a little tiny
response and so maybe it's this
extraversion that has something to do
with criminal Behavior because somebody
that's really introverted probably isn't
going to be committing crimes over here
they might just do it to get excited now
stability versus unstability or I think
talked about uh
eroticism
versus um like stability and then he
talks about psychoticism as well so like
uh that's like a psychopath or callous
unemotional Behavior which receives a
lot of attention right now in the
research but let's just look at this
emotional stability here so over here
would be the neuroticism or emotionally
unstable and stable down here so let's
say somebody's extroverted and they're
really emotionally stable it might be
talkative responsive easygoing or
Lively however if you look at somebody
that is emotionally unstable and
extroverted over here you're going to
see Restless aggressive
excitable changeable
impulsive these personality
characteristics over
here kind of remind me of personality
characteristics of criminal behavior and
then read about psychoticism as well
which has received less attention than
these other two factors however it's a
pretty provocative idea and I thinks
ideas really could explain a lot of
criminal Behavior so again do not
neglect your textbook make sure you read
this because the text goes into detail
about all the studies and it has far
more information than these
screencasts um these screencasts are
just uh uh hopefully I can add to the
text
material and uh help you engage in the
material more so if you have any
questions please let me know next week
uh we will continue with uh the
psychopath which is probably my favorite
topic and we have some videos to watch
too so again contact me if you have any
questions
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