Posts archived in Abnormality
June 21, 2010 by Evie Bentley.
Whilst it’s been known for years that lithium drugs help many bipolar patients to manage their disorder, it hasn’t been known how lithium acts. But now there is a clue! Laboratory studies show a link between lithium and an enzyme known as PO*. This enzyme controls a group of genes which affect brain cells’ sensitivity to lithium. And one of those genes, ImpA2, is also associated with bipolar disorder in some sufferers. So possibly there is a functional connection between ImpA2 and bipolar disorder, which can be mediated by lithium. Understanding this link could lead the way to better treatments for bipolar depression.
*PO=prolyl oligopeptidase
June 19, 2010 by Evie Bentley.
We’ve known for ages that far more females than males suffer from depression and anxiety disorders, but it is frequently hypothesised that this is not the true state of things. This is because, in Western industrialised cultures, it is more acceptable to admit vulnerability especially psychological vulnerability if one is female, not male. The macho nature of these cultures is, if you like, a confounding variable. However, there could be more to this than social and cultural relativism.
A recent interesting finding in rats shows that females are definitely more sensitive to stress. Their brain cells respond far more strongly to the precursor to corticosteroid stress hormones, a neurochemical called corticotropin-releasing factor, CRF. Female rat neurons are activated by CRF, male rat neurons adapt to it and less stress hormones are produced.
But does this rat behaviour also happen in humans? Well, we don’t know; but we do know that CRF regulation gets disrupted in human stress-related psychological disorders, so there could be a similarity, although one needs always to be very careful in generalising between species.
June 10, 2010 by Cara Flanagan.
A student recently pointed out an error in the AS Book on page 119 – in the Do it yourself feature we have suggested that one way to help yourself to remember the terms related to the body’s response to stress is to use more familiar ideas to represent the different words. For example, you might try to remember those Spanish cousins ‘Adrena Cortez’ (the adrenaline junkie) ‘Adrena Medulla’ (with her cortisol habit). However that is the wrong way round – Adrena Cortez has the cortisol habit. Sorry! Thanks to Jasmine Nelson for pointing this out (and telling us how much she liked this blog).
June 8, 2010 by Adrian Frost.
There’s a useful presentation on experimental design to be found here
But equally interesting is the software that has been used to produce it – you can have a play here – it’s really easy to use, and you have to agree the presentations look pretty slick..
I was wondering – this could be used for a quick class experiment: Ask one group to present information using powerpoint (i.e. in a linear fashion), ask another to present the same info using the more hierarchical prezi software, to see if the way in which information is organised affects recall in independent groups of subjects?
The online magazine Slate has been running a series about memory distortions and false memories (see here) There are 8 articles all together – at the top of the web page there are links to previous articles.
The first article describes a recent mass experiment conducted by Slate where they used some of Elizabeth Loftus’ techniques to plant false political memories.
June 7, 2010 by Evie Bentley.
Exergames are new video games based on using the Wii. They use physical activity not sight as input and have been developed for use in the fight against obesity. Now they have been adapted so that children with visual impairments can play them, important because these children as a result of sight problems do not find it easy to take healthy exercise and so are at a higher risk of obesity.
Research team leader Eelke Folmer says the modification that enables the games, such as tennis, to be played without visual feedback use audio and vibro-tactile feedback. Like standard Wii games these new ones can be played against other people or the computer. So far these games have been very successful in getting sight impaired people to exercise vigorously, though the sample sizes have been very small.
To play the VI Fit games, a user would need a Wii remote and a Windows PC with bluetooth support or a USB bluetooth dongle. The games can be downloaded using instructions at www.vifit.org. The games are not affiliated with or endorsed by Nintendo.
May 20, 2010 by Cara Flanagan.
The is THE book – psychology made beautiful and a revision guide to boot. Students will want to revise. A book full of images is exciting and also memorable. Get your copy today!
You can see more spreads on the sample chapter tab or go to bookshop to order your copy.
May 19, 2010 by Adrian Frost.
Dreams, drugs, intelligence, memory, infant brains, psychoanalysis, human evolution and many more – Loads of online broadcasts from Melvyn Bragg’s ‘In Our Time’ Radio 4 series to be found here – all free – it makes one proud to be a licence payer….
May 17, 2010 by Evie Bentley.
Three recent small studies (see here or here) looked at the effects of various 12-16 week exercise programmes on sufferers from schizophrenia. The types of exercise varied from more physically strenuous ones, such as strength training and jogging, to less energetic yoga.
There were small improvements in physical health but greater improvements were found in mental states. Improvements in anxiety and depression from exercise were greater than similar improvements in standard care without an exercise component.
These studies support the findings of two earlier studies, which suggests the importance of further research into the effects of exercise programmes in the treatment of schizophrenia plus initiatives looking into how to implement such programmes and engage sufferers in taking part.
May 9, 2010 by Cara Flanagan.
In the AQA A AS Complete Companion we have subdivided conformity into majority and minority influence. There was a reason for this – when the new specification was first published minority influence was a named topic so we wrote material on it. However, in a very late revision, minority influence was removed from the specification. However we (as well as other textbooks) left it in because it is an important part of the social change topic – social change is due to minority rather than majority influence.
It is arguable as to whether ‘conformity’ refers only to majority influence or can include minority influence – for example, the Scottish higher exam talks about conformity to majority and minority influence. We elected to include minority influence under the heading ‘conformity’. However, AQA’s ruling is that conformity is solely concerned with majority influence. This means that, in the exam, students will get no marks for material or research studies on minority influence in a question on conformity.
However material on minority influence can be made creditworthy when asked about the implications of social influence research for social change, so it remains an important topic of study.
Thanks to Emma Marsh for raising this issue.
