Class Notes (806,766)
Canada (492,430)
Biology (2,348)

Roles of Deficits

3 Pages
Unlock Document

McMaster University
Douglas Davidson

 s symp Recent research  Zakzanis; conclusion tha the specific role of deficits in the temporal lobes has been overstated and that more diffuse dysfunction exists  MRI studies found a subtle 4% but significant bilateral hippocampal volume reduction in ppl with s  Regional volume reductions were esp marked in bilateral medial temporal lobe regions  Reported finding reduced hippocampus volume amog twins with s relative to twins without s  They reported that ppl had smaller medial temporal lobe volumes relative to controls but that the volume diff was not specific for either region or hemisphere  Reduced cerebral blood volume accompanies brain size in s and proposed that chronic cerebral blood volume eventually results in neuronal loss and cognitive impairments  The results suggested that violet ppl with s and a history of anti social and or substance use manifest neural dysfunction affecting basal or orbital pats or the prefrontal cortex Psychological stress and s  Data as show that as with other dis increased in life stress increase the likelihood of a relapse  Ppl who take pare in stress mgt program are less likely to be readmitted to the hospital the year following treatment esp if they had attended treatment session regularly  Two stressed have played an imp role in s: social class and family Social class and s  S are found in central city areas inhibited by ppl in the lowest socio economic class nd  The rate of s was found to be twice as high in the lowest social cllowest classe 2  Found tat ppl with s are downwardly mobile in occupational status. But an equal # of studies have shown that ppl with s are not downwardly mobile  Found evidence for social selection hypothesis: of 26 patients in the lowest social class only 4 had fathers in the lowest class  The data are more supportive of the social selection theory than of the sociogenic theory  The prevalence of s among Africans from the Caribbean who remain in their native country is much lower than among those who have emigrated to London The family and s  Moms found to be rejecting, overprotective, self sacrificing, impervious to the feelings of others, rigid and moralistic about sex, and fearful of intimacy. This blamed the mom for child’s psychiatric disorder. Mother theory had not yielded supporting data  A family communication pattern characterized by hostility and poor communication produced the later onset of s or s related disorders  10% of the ppl returning to the low EE homes has relapse .in marked contrast in the same period 58% of the ppl returning to high EE homes had hone back to the hospital  it has also been fond that negative symp of s are the more likely to elicit critical comments  EE mothers are highly sensitive to excitement and depression in the patient and report a high level of burden associated with their kids illness. These mothers also have a personality characterized by high levels of conscientiousness and lowest levels of neurotism  Research indicates that both interpretations of the operation of EE –the casual and the reactive may be correct.  Two key findings emerged: 1) the expression of unusual thoughts by the patients elicited higher levels of critical comments by family members who had previously been characterized as high in EE 2) in high EE families critical comments by family members led to increased expression of unusual thoughts  Thus the study found a bi-directional relationship: critical comments by members of high EE families elicited increased expression of unusual thoughts by patients and unusual thoughts expressed by patients led to i
More Less

Related notes for BIOLOGY 1P03

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.