Frequently Asked Questions - Psych 202
Last
updated 22 September 2004
Studying, Test-taking, and
General Course Information
Methods
Brain and Biology
States of Consciousness
Learning
- In your discussion
of one trial learning, you talked just about taste and nausea. I
was wondering, if you gave a child a taste of something new, and then
scared them with a loud sound, as in the Watson/Albert experiment,
would the
new taste be associated with fright?
- UCR/CR, I'm
confused. What's the same, what's different?
- I'm finding all
this material about positive punishment and negative reinforcement
confusing.
- I was wondering if you
could elaborate more on the differences between Fixed Interval, Fixed
Ratio, Variable Ratio, and Variable Interval. If you could give me examples of each
that would be very helpful also.
Memory
Stress and Coping
Cognition
Intelligence
Development
Emotion and Motivation
Personality
Psychological Disorders
Therapies
Social Psychology
Studying, Test-taking, and General Course Information
- How do I pass your
exams?
- The advice I give to students is pretty simple,
and is based on what worked for me when I was an undergraduate taking
psychology courses:
- Attend class and take notes (I actually
rewrote my notes after each class as a study technique). Then use these
notes as a guide to studying material in the book. You will find that
most
exam questions are related to material that has been presented in
class.
There are some questions that are on material that is only presented in
the book. However, I tend to talk about topics that I think are
important, and I tend to test on topics that I think are important, so
lecture material and test questions tend to overlap, but not completely.
- Read the book twice. The first time through
read throughly and highlight those sections that seem important. The
second time through review the highlighted sections. Each chapter has a
summary and key questions at the end; make sure you understand them.
- Both the text web site and the study guide
have practice questions. Practicing with these questions is a good way
to review and reinforce what you have learned. Because these questions
are written by the same folks who produce the testbank for the text
(which I use for about 1/3 of the exam questions), they also give you
an idea of the style of exam questions you might find on the exam.
- Don't try and cram all the information into
your head in just one try. Research shows that people learn more if
they have repeated exposure to the material they are trying to learn,
and if you break it into small pieces you will be better able to
consolidate
the material in your memory.
- If you can explain a concept to someone else than you
probably
have a good understanding of the topic.
- The folks at ARCH have these suggestions
about taking multiple choice exams, and I pass them along unedited .
- Answer each question in your head before
looking at the choices.
- Pay attention to varying directions.
- Mark questions you can't answer immediately
and come back to them.
- "None of the above" is often not the
answer. (writing ALL wrong answers takes a lot of work) Back to top
- There
was material covered in class that was not mentioned on
the list of exam topics. I was just wondering if this info is still
fair game for the exam?
- Yes, this material is fair game for the exam.
The list of exam topics comes off the top of my head, and I sometimes
forget things. Thus I have the caveat that the list is not exhaustive.
The bottom line is that if I talked about a topic in class, you should
assume that it is fair game for the exam. Back to top
- The material
presented in lecture is not the same as the material in the book, which
should we study for the exam?
- You should study both sets of material. I
present additional material in class because I feel that I am not doing
my job if I simply present material that you could get on your own by
reading...what would the point be in coming to class then?
Back to top
- I have been told
that I am simply wasting my time by taking notes on material presented
in the book. Is my friend correct?
- Your friend is mistaken. There is
material in the text, not presented in class, that will be on the exam.
While
I do tend to emphasize material presented in class, I don't have enough
time to cover all of the material that I would like, as a result,
students need to read the book. Back to top
- What should
I study for your exams?
- Obviously I would like you to study material
that is in the book as well as material that has been presented in
class. My exams tend to emphasize material that has been
presented in class, if only for the fact that I talk about topics that
I feel are important for you to know about, and I tend to test students
on topics that I think are important. However, this does not mean
you can skip reading
the book. I am not a big stickler for dates or numbers, like the
speed of an action potential or when the first psychology lab was
established.
I do expect that you will be familiar with the names that I discuss in
class. However, what I feel is most important is for you to know
are the concepts and I would like you to be able to apply them.
So
if you read a description of someone who has problems maintaining body
temperature and who has a loss of appetite, you would be able to deduce
that they have damage to their hypothalamus and not their thalamus or
their
hippocampus. Back to top
- I
have been trying to sign up for extra credit studies, but whenever I
check there are no available openings. Are there any particular times
when the sign up sheets get put out?
- There is no one time of day when extra credit
folders go out. It is just whenever the experimenters decide that they
need to recruit subjects. Researchers in the Psychology Department will
be recruiting subjects throughout the semester, and I don't think that
people will have difficulties getting the extra credit points that they
want. It just happens that at the start of the semester everyone is
looking for extra credit points and that demand exceeds the supply of
subject
openings. That demand slows down as the semester progresses If you are
concerned about getting all of you points, it may be a good idea to
take
the extra credit quizzes that are offered. There are 3 quizzes, and you
can get all of your extra credit points from quizzes. I would
especially
recommend the quizzes for students that are non-native English
speakers,
because a number of studies limit recruitment to native English
speakers.
Back to top
- I'm appalled
at how poorly I did on our first exam. Is there any hope of my still
getting a decent grade in this class?
- No, you are not doomed by the results of the
first exam. Final grades are determined on the basis of the total
points earned on the four exams. The curves posted with each of the
four exams are only approximate curves. Those letter grades are not
used in the computation of your final grade. The total number of points
earned on the four exams are used to determine the curve for the class.
After the curve has been set, then the extra credit points are added
in, and a final
grade is determined for each student. So if you did poorly on this
first exam, all you have to do is improve your grades for the next
three
exams and you can pull your grade out of the pit in which it currently
resides. Back to top
- Any truth to
the rumor that you drop our lowest grade?
- I'm sorry to disappoint you on this one, but
all of your test scores count towards your final grade. I should
note that I find that 85%-95% of students would get either a lower
grade or the same grade if I were to drop their lowest grade. Back to top
- Can you
explain what I am supposed to do with the little blue cards that I get
when I do an extra credit study, and is there a sheet that I am
supposed to be using too?
- The extra credit handout that you got at the
beginning of the semester has a form for you to tally your extra credit
points. You don't have to use that, but many students do, and turn that
sheet in with their point cards at the end of the semester. When you
participate in a study, the experimenter turns in a point card to Dr.
Ahl. This then gets recorded in the extra credit database. At the end
of the semester,
all the extra credit points are posted in the lobby, where are grades
are
listed. You will check your point listing and if it matches what you
think
you earned, you turn your cards in and you are done. If the database is
incorrect, you will hold on to your point cards and get in touch with
Dr.
Ahl so that the error can be corrected. Back to top
- Given the literature on context-dependent memory, aren't I
at a disadvantage if I am taking the final exam in a different location?
- A very good question and a reasonable
concern. The literature would suggest that students who take the
final in a different classroom are at a disadvantage relative to
students who take the exam in the same classroom. However, an
examination of test scores from December 2000 found no differences
between students taking the exam in room 105 and students who took the
exam down the hall in room 113. So I don't think you need to be
worried. Back to top
- I am
really enjoying psychology, can you recommend any other courses to take?
- The Psychology Department surveyed graduating
seniors in the spring of 2001. These students identified a number
of classes and professors to whom they gave high marks. In this
list, I have not included any course or professor who got more than two
negative comments from other students. Highly rated instructors
include Hayden, Glenberg, Pollak, Saffran, Coe, Braun, Livingston,
Reinholtz, Curtin,
Harackiewicz,
Caldwell, Gernsbacher, Berridge, Goldsmith, Van Rybroek, Moore, and Senko.
Frequently mentioned courses were Autism, Abnormal Psychology,
Emotions,
Clinical, Developmental, Cognition, Social Prejudice and Stereotypes,
and Child Psych. You might
also want
to check out ASM's
collections of faculty evaluations. You can also check out ratemyprofessor.com,
though take these ratings with a grain of salt, one student, for
instance, commented that they questioned my ability to teach any subject.
Back to top
- I am interested in
getting experience working in a psychology lab, any suggestions?
- Faculty have different requirements for their
undergraduate research assistants, so you might not be able to work
in some labs if you haven't taken 225 or if you aren't a psychology
major. However, if a particular research group is doing work that
interests
you, check with the professor to see what opportunities are
available.
Highly rated labs are those run by Richard Davidson, Hill Goldsmith,
Judy
Harackiewicz, and Morton Gernsbacher. The Psychology Department
maintains
a listing of research positions available for credit
and for pay . Back to top
Methods
- In
class you talked about different approaches to psychology,
which approach is best?
- No single approach is better than any other. It
all depends on the type of questions that you wish to ask and on what
particular level you want to understand a particular behavior. While it
is useful to know that the experience of pleasure is associated with a
release of a particular neurochemical, this does not give us a complete
picture of the experience of pleasure. It does not tell us how the
pleasure of biting into a good piece of pizza is similar to or
different from the pleasure of waking up on a Saturday morning and
knowing that we don't have to go to work. I think it is like the story
of the blind men and the elephant: the different approaches help us to
achieve a complete picture of the beast (behavior). Back to top
- Which
psychologists we should be familiar for the exam? I understand that
there are a few big names we definitely should know, but must we also
know
which psychologist made every major observation pertaining to learning
and memory, etc.?
- I tend to ask questions about concepts rather
than names. A lot of my learning had to do with names and dates, but
when I think about what I want students to take away from a course like
this, it is the ideas rather than names and dates. So for instance,
rather than asking a question about what is Albert Bandura noted for, I
would ask a question about Bandura's study with the Bobo doll, and ask
what
he demonstrated with that study. This doesn't mean that I don't ask
about names, but they are much rarer questions. Back
to top
- If
correlation is not causation, what good is it?
- Correlation allows us to determine if there
is a relation between variables, to see if they vary together. There
are some situations where we want to investigate behaviors or
disorders, but we can't do experiments because it would not be feasible
or would not be ethical. For instance, in studying brain function in
depression it would be unethical to induce a depressive episode in a
group of subjects, so instead, we look at the brain functioning of
people who are already depressed. This design is a correlational design
because we have not
manipulated their depressed mood. They were already depressed when they
entered our study, and thus we can't say that the differences in brain
function are caused
by depression only that those changes are associated with
depression. Back to top
- I am
having difficulty understanding the writing in research articles; it is
very confusing
- Here is some guidelines for understanding the
organization of a journal article, and most research papers that you
read will follow this same general format. The article begins
with an abstract. This is the condensed summary of what
the writers did with their research study and what their important
findings were. The abstract will give you a general idea about
the paper, but you will most likely need to read the whole article to
fully appreciate what the authors did or did not do. The introduction
is
the authors lay out the background of their research; reviewing what
has
and hasn't been done in the area that they are investigating. The
introduction ends with a paragraph or two where the lay out the basics
of "the current study." The methods section follows
the introduction. The methods section, which is broken down into
different parts, describes who participated in the study (subjects),
what they did (procedures), what sort of data was collected (measures)
and finally how the data were analyzed (analysis). Ideally, the
authors should present their methods section with enough clarity and
detail
that another researcher could go out and replicate the current study
after reading this section. As you think about variables,
independent and dependent, the measures describe the dependent
variables, which you
will recall is the measured outcome, and the subjects and procedures
will
provide information about the independent variables. Next comes
the results section, and this is where the authors
report their descriptive and inferential statistics. (Please
note that I do not expect students to understand the statistics
presented
in these papers.) Finally, the paper ends with the discussion
section. This is where the authors talk about what they
found and what it all means. Typically, authors will acknowledge
any limitations in their findings as well as discuss directions for
future
research. Back to top
- I was wondering if you
could clarify the differences in representative sample,
population and sample.
- The population is the group that we are interested in
making statements about, for instance, undergraduates at the UW.
A sample is a subset of the population, which we use to make inferences
about the population. A representative sample is a sample that is
selected to have the same characteristics as the population on a number
of variables. So if I was drawing a representative sample of UW
students, I might try and get a sample that had the same breakdown of
males and females, that had a similar distribution of ages, that had
the same breakdown of instate vs out of state students. Back to top
Brain and Biology
- I was wondering
why you omitted to talk about the potassium and sodium channels
oopening in the stages of the action potential. I was wondering if we
needed
to know how they repolarize and depolarize, with the potasium and
sodium
channels.
- I didn't talk about that in class because I
didn't want to overly complicate the mechanisms involved in the
generation of an action potential. I've found that some students find
the whole process of neural communication to be confusing and
intimidating, and my goal
in lecture is to present it in a manner that students can understand.
Once students feel comfortable with how the process works, they can
incorporate the additional material in the book into their bank of
knowledge. Back to top
- Do we need to
know about PET, MRI, SQUID, and EEG?
- Yes, you should know about these different
techniques to investigate the brain. You should know that PET, SQUID,
and EEG are techniques that allow you to assess functioning in the
brain, while MRI is a structural measure. EEG can't tell you about the
size of the planuum temporale, but it will allow you to look at the
change in brain activity when a sentence has a bizarre ending, such as
"I put on my pajamas, brushed my teeth, and went to school. Back to top
States of Consciousness
- I'm not sure
if I understood the answer to the 'in class' question regarding shift
work. If I my notes are corrected it was determined that it would be
more difficult to change from working 3rd shift to working 1st shift.
Is this the correct finding?
- No, it is easier going to a later shift
(stretching out the day) than an earlier shift. This is because our
natural circadian rhythm is slightly longer than 24 hours. So from
third shift, it is easier to go to first shift than second
shift. Back to top
- Is my
sleep any different after I have had something to drink as compared
to other nights?
- Yes, your sleep is different. Alcohol
consumption may decrease the amount of time it takes you to fall
asleep, but it
tends to disrupt your sleep during the second half of the night. This
sleep disruption may lead to daytime fatigue and sleepiness, as well
as impaired performance on cognitive tasks. Back
to top
- Is their any
relationship between consuming alcohol and snoring at night?
- Yes, there is a positive correlation between
the two: the more you drink, the more you snore. See for instance,
Enright et al., (1996). Prevalence and correlates of snoring and
observed apneas in 5,201 older adults. Sleep , 19 ,
531-8. Back to top
- Could you please
go over the stages of sleep again?
- We go from being awake into stage one sleep.
Our EEG is characterized by beta activity when we are alert and active.
When we are awake and resting, our EEG is characterized by alpha
activity. In stage one sleep, our EEG is characterized by the data
activity. We
move from stage one into stage two, and stage two sleep is
characterized
by sleep spindles and K. complex waves. From stage two, we move into
stage three and then into stage four. Both stage three and stage four
are characterized by Delta activity in the EEG. Stage four differs from
stage three in that it has more delta activity. Stages three and four
are also known as deep sleep . From stage four, we cycle back
into stage three and then stage two, but instead of going back from two
into stage one, we go into REM sleep. This whole cycle takes about 90
minutes. At the beginning of the night, we spend more time in deep
sleep
then we do in REM sleep. However, this changes as the night progresses
until we are spending most of our 90 minutes sleep cycle in REM sleep. Back to top
- Nightmares,
night terrors is there a difference?
- Nightmares, which have a story like quality
to them, occur during REM sleep. Night terrors, this undifferentiated
feeling of panic and fear, occur during non-REM (NREM) sleep. Night
terrors occur during deep sleep (stage 3 & 4). Also occurring
during
deep sleep are sleep walking and bed wetting. Back
to top
- Are there any
theories that totally eliminate the nature-nurture theory, or is the
nature-nuture theory generally accepted by all?
- I am not aware of any work that successfully
refutes the idea that nature and nurture both contribute to behavior.
This does not mean that everyone accepts the theory. There are a number
of people who accept the medical model, people who believe that it all
comes down to chemical imbalances and there are some, though few,
strict behaviorists who believe that behavior is all environmentally
determined. Personally, I don't see how anyone can take either of those
two extremes given the existing literature, but that's my take, and I
hope to present enough data over the course of the semester that the
class will accept that both nature and nurture play important roles in
behavior. Back to top
- In
class we were told that prolonged sleep deprivation caused, things like
hallucinations and paranoia, but the book says the opposite: that there
are no real effects of sleep deprivation, p(138) paragraph 1. What do
you make of this?
- A quick answer would be that psychology is an
inexact science. There are data in the literature that will support
both positions, and I believe that what I taught in class is more
accurate. While some people are less susceptible to the effects of
sleep deprivation, the prolonged lack of sleep does impair functioning
of the immune system, and has been shown to result in death in
animals. Back to top
- Do
we naturally wake up during a specific stage of sleep assuming we
aren't woken by external stimuli?
- I don't really know the answer to that
question, based on how we spend more and more time in REM sleep as the
night progresses, I would assume that we typically tend to wake during
or following REM sleep. Back to top
- What is REM
rebound?
- REM rebound occurs when an animal ( human or
otherwise) is allowed to sleep naturally after having been deprived of
REM sleep for several nights. What happens is that the individual
enters REM sleep faster than normal, and spends a greater percentage of
time in REM sleep during the night. Back
to top
- How does Ecstasy work?
- Ecstasy is an amphetamine that produces
depletion in brain levels of serotonin. While users report
postive moods while ingesting Ecstasy. Feelings of aggression and
depression are common afterwards. Consider this report from a
1998 paper
"However 2 days afterwards, ecstasy users felt significantly more
depressed,
abnormal, unsociable, unpleasant, and less good tempered, than the
controls.
Cognitive performance on both tasks (verbal recall, visual scanning)
was
significantly reduced on-MDMA. Memory recall was also significantly
impaired
in drug-free MDMA users, with regular ecstasy users displaying the
worst
memory scores at every test session. This agrees with previous findings
of memory impairments in drug-free ecstasy users. Animal data have
shown
that MDMA can generate long-term serotonergic neurodegeneration in
various
brain areas, including the hippocampus, and these deficits are still
present 7 years after MDMA exposure. The cognitive deficits in
drug-free
recreational ecstasy users, suggest that MDMA may also be neurotoxic in
humans." Actually, there is quite a lot of research that has found long
term cognitive and memory deficits associated with Ecstasy.
Back to top
- What is happening to your brain
when you blackout from drinking too much?
- Moderate to high doses of alcohol suppress activity of
neurons in the hippocampus. This reduction in neuronal activity
leads to
anterograde amnesia. I wouldn't be too concerned about the
long term effects of a single blackout. If someone is having
repeated
blackouts, that is an indication that they have a drinking problem, and
they should look into getting treatment. Back to top
- Do
people who are hypnotized have a kind of flashback that they can
remember things. Do they relive the moment? I was just
wondering because that is how they portray it in
movies and on television.
- I can't answer that question with complete
confidence. Based on my own experiences being hypnotized and
hypnotizing others, I
would say that the dramatic reliving of past experiences does not
typically
happen. Your experience is that of an observer rather than a
participant,
and actually if you are asking someone to go back to some traumatic
event,
you as the hypnotist would want to avoid retraumatizing your
subject.
One way that this can be done is to have them imagine viewing the past
events
on a television set; this creates some emotional distance.
Back to top
Learning
- In your
discussion of one trial learning, you talked just about taste and
nausea. I was wondering, if you gave a child a taste of something
new, and then scared them with a loud sound, as in the Watson/Albert
experiment, would the new taste be associated with fright?
- Interestingly enough, you would not get one
trial learning if you were to pair a novel taste with a loud
noise. It seems that we are biologically prepared to associate
certain types
of stimuli, such as taste and nausea. While it would be possible
to pair taste and noise, it is easier to pair taste and nausea or light
and noise together. Back to top
- UCR/CR, I'm
confused. What's the same, what's different?
- Your confusion is normal. This stuff gave
me headaches when I took Intro Psych. When a response occurs in
the presence of the Unconditioned Stimulus (US) [presented either by
itself or paired with the CS], that response is an Unconditioned
Response
(UR). The response that occurs when only the CS is presented is
a Conditioned Response (CR). The CR can be the same as the UR or
it can be different, and this was the part that confused me.
However,
if you look at the stimulus that is eliciting the response, it is much
easier to determine whether the response is a CR or UR. Back to top
- I'm
finding all this material about positive punishment and negative
reinforcement confusing.
- In order to determine whether not a stimulus is
punishment or reinforcement, it is necessary to look at what effect the
stimulus has on the target behavior. If it increases the behavior, then
it is a reinforcement. If it decreases the behavior, then it is
punishment. In order to determine whether or not the punishment or
reinforcement
is positive or negative, it is necessary to look at whether or not this
stimulus is being taken away the or being presented. For example, when
apparent says to a child eat your peas or you don't get dessert. The
dessert
is being given to the child to reinforce the child's vegetable eating.
It is a positive reinforcement, because the dessert is being given to
the
child. When a parent says to a child "if you hit your brother again
you're
not getting dessert," the removal of dessert is a negative punishment.
It is punishment in that the parent is trying to decrease the hitting
behavior and it is negative because the dessert is being taken away. If
the parent says, "Play nice with your brother and you can have
dessert," then this
is positive reinforcement. Can you figure out why?
Back to top
- I was wondering if
you could elaborate more on the differences between Fixed Interval,
Fixed Ratio, Variable Ratio, and Variable Interval. If
you could give me examples of each that would be very helpful
also.
- Interval schedules - reinforcements are delivered on the
basis of time since the last rewarded response. Ratio schedules -
reinforcements are delivered on the basis of the number of responses
since the last rewarded response. Fixed schedules are schedules
that have a set amount of time or number of responses between each
reward. Variable schedules are schedules where the amount of time
or number of responses varies from time to time but over the long run
averages out to some set amount. As an example, Slot machines pay
out on a variable ratio schedule. On average they may pay out
every twentieth pull,
but sometimes the machine will pay out after three pulls and other
times
it may takes as many as forty pulls before a player gets a reward.
An
example of a fixed interval schedule, would be a reinforcement schedule
where
a pigeon has to wait one minute after receiving a food pellet before it
can
earn another pellet.
Back to top
Memory
- Could
you explain Baddeley's conception of Working Memory again.
- In the traditional information processing model
of memory, short-term memory serves as a holding area, or short term
storage, for information. That information then is either
forgotten
or it goes into long-term memory. I think it would be safe to say
that in the traditional model of memory long-term memory as viewed as
the critical piece of the model. Baddeley's model argues for the
importance of short-term memory. Baddeley conceives of short-term
memory as a
working memory. Working memory in the sense that all of the
important stuff (i.e., thinking) occurs there: we receive information
from sensory memory, we recall information from long-term memory, and
we manipulate all
that information in working memory. Back
to top
Stress and Coping
- What is the General Adaption Syndrome?
- The General Adaption Syndrome was described
by Hans Selye as the stages that an organism goes through in response
to stress. The first stage is the Alarm Stage and occurs when
an organism is first confronted by a stressor. The sympathetic
nervous system kicks into high gear, triggering the release of
adrenaline and other
stress hormones from the adrenal glands. In response to these
stress
hormones, heart rate and breathing increase. Activity in the
parasympathetic
nervous system slows down at the same time. This heightened
state of arousal cannot continue indefinitely, so the organism enters
the
Resistance Stage. The arousal levels decrease, but not back to
pre-stress
levels. There is still above normal secretion of stress hormones
and the organism continues to draw on resources at an above normal
rate.
Eventually the body's resources get depleted. This is the
Exhaustion
Stage. In the exhaustion stage, the organism has a diminished
ability
to respond to stress and is more susceptible to illness. Back to top
Cognition
- What is the difference between Construct Validity and
Content Validity?
- Construct validity is the degree to which a
test actual reflects the hypothetical construct being measured, so does
an intelligence test measures intelligence as opposed to musical
ability
or digit span. In contrast, Content Validity asks whether the
test measures the full range of skills or abilities within the
construct. In assessing the content validity of our intelligence
test we would want to know if our test samples the entire domain of
intelligence, as opposed to only asking questions about mathematical
skills or only reading ability. Back
to top
Intelligence
- I'm kind of
confused about the Two Factor Theory with Charles Spearman. If
you could quickly explain that again, that would be great.
- Spearman believed that there was a unitary
intelligence based on his factor analysis work. This intelligence
factor he labeled g (general intelligence). Thus performance in
one area (e.g., math) was similar to performance in other areas (e.g.,
spelling, science, english). Because there was not a perfect
relation between performance in two areas, Spearman hypothesized that
there was also a specific intelligence factor for each area, which he
called s. However, Spearman believed that only g was of interest.
Back to top
Development
- Are
there situations where both the mother and father were very responsive,
but the child still became ambivalently attached or even avoidantly
attached?
- Certainly, a caregiver's responsiveness to
their child is not a guarantee that the child will become securely
attached. Likewise, an indulgent or neglectful parent can have a child
who is securely attached. What a parent's style of parenting does is
increase the likelihood that their child will have a particular style
of attachment. Back to top
- How can breast-feeding
improve a child's IQ? I understand that there may be more
nutrients in breast milk than in formula, but does it really make that
much of a difference?
- Breast
feeding has been shown to be associated with small but significant
differences in IQ in most but not all studies that have examined this
issue. In my brief review of this literature, it seems that
breast feeding is especially important with premature/underweight
babies who typically have large decreases in IQ when compared to normal
weight children. Here are a couple of citations with their
conclusions. The first paper is a New Zealand study of over 400
children and the second paper examined over 200 children.
- Horwood et al. (2001) found that even after control for
confounding, there remained a significant (p < 0.05) association
between duration of breast milk feeding and verbal IQ: children breast
fed for eight months or longer had adjusted mean (SD) verbal IQ scores
that were 6 (0.36) points higher than the scores of those who did not
receive breast milk.
- Johnson et al. (1996) report that controlling for
environmental variables and maternal intelligence, initiation of breast
feeding predicted scores on intelligence tests at age three. Breast
feeding was associated with 4.6-point higher mean in children's
intelligence.
Back
to top
Emotion and Motivation
- I'm
not entirely clear on the differences between the Cannon-Bard,
James-Lange, and the Schachter-Singer theories of emotion.
- James-Lange theory argues that we have a
physiological reaction to an emotional stimuli, we then become aware of
that physiological reaction and have an emotional reaction. So, I see a
bear in the woods, I start running, I notice that I am running and
conclude that I am afraid.
- Cannon-Bard theory argues that information
about an emotional stimulus goes to the hypothalamus and then goes in
two
directions 1) producing the physiological reaction and the second
producing
the emotional reaction. So I see the bear, that information goes to
the hypothalamus, I start running and feel afraid simultaneously.
- Schachter and Singer argue that there are two
components to emotion: arousal and cognition. When we are aroused,
we become aware of that arousal and look to the environment for a cause
of that arousal, our emotional reaction then comes from that cognitive
appraisal. This is somewhat like James-Lange except that this
formulation
goes beyond interpreting the arousal and looks to external factors that
might be causing the arousal. So I see the bear, I start running, I
become
aware of my running, I look to see what might have caused my running --
the bear, and conclude that I am afraid. Back to top
- I was reading the
book and it said that if one identical twin is a homosexual the
probability the second is 50% and drops to 22% in fraternal
twins. Our class notes said otherwise. Just curious.
- The reason for the discrepancy between lecture
and the text is that there are several studies that have looked at
concordance rates in twins. The numbers I gave in class were from
an Australian twin study. Although there are differences between
studies in the obtained concordance rates, the take away message is the
same, i.e., there is a genetic component to sexual orientation, but
genetics alone do not explain sexual orientation.
Back to top
- If
CCK is a satiety signal, why hasn't it been used as a diet aid?
- Research that has examined the long term
effects of CCK on satiety finds that subjects seem to habituate rather
quickly to it's effects, so within a week the increased CCK is no
longer restricting food intake. Back to top
Psychological Disorders
- Would you be willing to post information about the incidence
rates for the listed psychological disorders. I have a sense for
many of the rates, but I don't feel my information is organized well.
- My test questions on incidence rates are not
going to be very specific, usually I do not ask for any numbers.
I do tend to ask about gender differences in incidence rates. I
could also imagine asking a question about the increase in depression
over the last 50 years. I would want you to know the following
sorts
of things:
- Incidence rate for schizophrenia is about
1%, no difference between men and women, and same incidence rate
worldwide.
- Anxiety disorders and Mood disorders are
twice as common in women as they are in men.
- Incidence rates for substance abuse and
antisocial personality are higher for men than for women.
- For women, the incidence rate for some form
of eating disorder is around 5%, somewhere between 8-10 million women.
Back to top
- I was
just wondering how in depth we had to know the categories of the
DSM-IV,
and specifically, if we had to know Table 12.1 on page 463 of the
book--it
tells the diagnostic categories and the examples for the model.
- I look for students to know that the DSM codes
diagnoses on five different axes, and I expect that students will know
what are the different axes. Since I don't live and die by the
DSM, my questions in the past have not been that in depth. I
could
forsee asking what axis a personality disorder would be coded
under.
I do not, however, expect students to be able to tell me in what
category a disorder like major depression falls. Back
to top
- Why
is it that winter babies are at a higher risk for schizophrenia?
- Babies born during the winter months have a
higher risk of developing schizophrenia because during the fall, when
their mothers are in the second trimester of pregnancy, there are more
flu viruses around. During the second trimester there is a lot
of cortical growth occurring, particularly in the frontal cortex and
the
hypothesis is that the normal pattern of growth is disrupted putting
the
individual at risk for the disorder. Back
to top
- What is the difference between
having recurring depressive moods as compared to being diagnosed as
clinically
depressed. I realize these are both serious situations, and I was
wondering how the symptoms and treatments of these situations vary.
- I am assuming that by recurring depressive moods you are
talking about episodes of depressed mood that do not meet diagnostic
criteria for major depression. If this pattern of depressed moods
lasts for two years or longer, it is diagnosed as dysthymia.
Dysthymia can be thought of as the experiencing of recurrent episodes
of subclinical depression. Meaning that the person might only
have 3 symptoms of major depression
instead of 5, or they might be down in the dumps, blue, or depressed
for
only several days a week or only part of a day rather than most days of
the week and all day. Dysthymia is often treated the same
way
that depression is treated, but the disorder is more resistant to
medication
than is major depression. The psychology related
links
can direct you to other resources about depression and dysthymia.
If this is something you or a friend are dealing with, there are
resources on campus that are available to students, such as the UW
Counseling Center and the Research and Training Clinic in the
department of Psychology. Back to top
Therapies
- I missed the
definition of trephining in class. Could you please
define/explain
it one more time?
- Trephining is a procedure that involves
drilling a hole through the skull. It is thought that this was
done to
release "evil" spirits. Much to my surprise, trephining is still
done. I came across information from a group that
encourages this procedure as a path to greater physical and spiritual
health...weird. Back to top
- I am confused about Cognitive therapies and Humanistic
therapies. They seem like the same thing to me.
- Humanistic therapies are based on the idea that
people are motivated towards self actualization. Important
principals of humanistic therapy are unconditional positive regard,
empathy, and genuineness. Cognitive therapies are aimed at
changing thought processes. We discussed two cognitive therapies
in class:
Beck's Cognitive therapy and Ellis's Rational Emotive Therapy.
Both
have the goal of changing irrational belief systems, but Beck is more
supportive and Ellis more confrontational. Back
to top
Social Psychology
- Could you clarify
for me and explain experiments in Festinger and Carlsmith study in
connection with Less-leads-to-more effect described in the book.
- The less is more effect that they talk about in
the book relates to the finding that you will produce more attitude
change if someone does something for a little amount of reward, e.g.,
$1 rather than a large reward, e.g., $20. When there is a large
reward, people explain their inconsistent behavior as resulting from
the reward. However, when individuals only receive a small
reward, that is not enough justification for the inconsistency and so
they are more likely to conclude that their attitudes are different
than they believed
and change their opinion. Back to top