Summary
OCR AS Psychology Maguire summary sheet
- Course
- Institution
Summary sheet for core study describing the basics for the study as well as ethical consideration and evaluations of validity and reliability within the study.
[Show more]
Seller
Follow
lilywilkinson2007
Content preview
Background: Aim: To investigate role of Reliability:The hippocampus plays an hippocampus in navigational High internal reliability as MRI scanner was used to
important role in memory. It is and spatial skills and on brain measure hippocampal volume and size of grey matter.
found in each hemisphere of the plasticity when exposed to High levels of control as on experimenter, who was
brain and plays a key role in extensive navigational blind, carried out all the brain scans so increases
spatial memory and navigation. experience in taxi drivers. consistency.
-Animals with larger territory
have increased hippocampal Correlation Aim: Validity:
volume. Correlation between length of High in validity as experimenter was blind so less
-Small animals involved in food taxi driving experience and chance of bias.
storage have increased measure of grey matter Lacks ecological validity as it was in a lab setting with
hippocampal volume. scanners so is artificial.
Method: Concurrent validity as VBM and pixel counting showed
Sample: Quasi experiment with similar results of measurement of grey matter volume.
16 licensed London taxi drivers, correlation. High in population validity as they used London taxi
who were right-handed and aged Independent measures drivers.
between 32-62.(All healthy design. Low in population validity as they were all male and all
medically). IV’s = taxi driver and non- right handed, which may have been extraneous
Comparison group = 50 male Ethics:
ppts, who were right-handed Ppts gave informed consent before taking part
and aged 32-62, from MRI Maguire et
on how hippocampal volume can change and
al.
Procedure (VBM): brain plastcitiy.
Voxel based morphometry = They were not deceived.
identifies differences in density of Ppts also had the right to withdraw at any point
grey matter in different parts of of the study if they felt distressed.
Results:
the brain. MRI may have caused them distress as they
-Taxi drivers have increased grey
would have been in the scanner for a while and
matter in right posterior
Procedure (Pixel counting): it can also be loud when taking photos so could
hippocampus.
Pixels were counted on
photographic slices. The person Ethnocentrism:
-Non-taxi drivers have increased
counting pixels was single blind. Is ethnocentric as it only looks at brain plasticity
grey matter in anterior
Pixels were counted for anterior and hippocampal volume from a western
hippocampus.
and posterior body of perspective of London taxi-drivers through use
of scanners, which may not be available to other
Conclusions:
disadvantaged countries.
As experience increases, grey
Isn’t ethnocentric as everyone has a brain that
matter increases.
has the ability to change shape/ size, so can be
There is a positive correlation for
generalised to everyone despite people having
volume of posterior hippocampus
different hippocampal volume.
and length of experience of being
a taxi driver.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lilywilkinson2007. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.80. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
60904 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now