Class Notes (810,487)
Canada (494,138)
Psychology (4,979)
PSYCH 3F03 (141)

January 16 3F03.docx

3 Pages
Unlock Document

McMaster University
Paul W Andrews

January 16 3F03 Continued from last class… • Cardiovascular disease risk does not increase substantially until 40. • Alzheimer’s disease data is a disease characterized by a decline in functioning—decrease in prevalence with age—identify pathologies in the brain o The development of amyloid lacks (protein that is naturally produced in the body and brain) but over time it accumulates in various regions starting in the mid- brain but also reaching the frontal cortex—the development of this is associated with developing alzheimers  Basically cases peak  Sex distribution o Neurofibrillary changes: neurons that disintegrate • Huntington’s disease: the more severe huntington’s disease—it’s more maintenance—the expression is not until later in life • Major depressive episodes: occur earlier in life o Frequency: sample of people of what psychiatrists called major depression o Both males and females show higher tendencies in earlier life o Age profile—we might be a little sceptical of whether or not this is evolutionary or not—also note how high prevalence they are o High prevalence of deprivation of biological functioning  Data is based on a single interview  If asked repeatedly over lifetime—it will give a better indication of the prevalence of depression over lifetime • When asked repeatedly—the rates go up dramatically (psychiatrist defined disorder) • Can “true” disorders peak during reproductive years? o Yes, it is possible!!  Lifetime prevalence of schizophrenia = 0.3 – 0.7%  Schizophrenia is a disorder—not sure what it is a disorder of  Odd age profile—peaks during reproductive  Lifetime prevalence o Possible that things can be changed at development time (adolescence)— however, natural selection wants to reduce the prevalence during the reproductive years so overall—lifetime prevalence is really low Lecture 5: Unusual Human Traits • Do not focus on ruiz-numz • Our bodies and brains have been changed from other organisms to adapt to unique selection pressures • Humans have a large brain relative to other organisms o Cranial capacity has risen over the last 4 million years o The latest data suggests that the Neanderthals had a larger cranial capcity than modern humans Graph: Represents brain mass as a function of body mass—brain and body for the average mammal • Primates—if we were to plot a line—the average would match to the average mammal • Humans fall above the average primate • We have a larger brain than expected for body size Another differentiation from primates is bipedalism: the ability to walk upright • Chimps can do it but they don’t • Humans have various morphological adaptations for walking upright One of the morphological changes that comes with bipedalism is a narrowing of the birth canal • Women seek assistance when giving birth in every culture o There are a couple of hunter gatherer groups that women give birth alone o However—this is just an ideal—only after repeated births—there is an ideal that women sho
More Less

Related notes for PSYCH 3F03

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.