Class Notes (834,250)
Canada (508,437)
Psychology (5,209)
PSYCH 3JJ3 (18)

3jj3 sept 26.docx

3 Pages
Unlock Document

Louis A Schmidt

Psych 3JJ3 – September 26, 2013 Biological Foundations - What is the empirical evidence – differential susceptibility o 1 – high vs low immune compromise  stress vs respiratory problems nd o 2 – non human primates categorized as high reactive or low reactive to novel stimuli  Year of study (low stress year vs high stress year) vs Number of injuries  Low reactive monkeys are less sensitive to environmental stress – they remained average in number of injuries  High reactive monkeys are more sensitive to environmental stress – in low environmental stress they had a low number of injuries, in high environmental stress they had a high number of injuries - Study – “An empirical example of differential susceptibility (DRD4 gene) to exogenous environmental influences (parenting) in predicting externalizing problems in children” o Parenting sensitivity vs CBCL externalizing (measure of behavioural problems – aggression, social issues, etc.) o DRD4 7- (short) and DRD4 7+ (long – “risk” allele) o Prior literature linking the DRD4 long alleles to inefficiency in the dopamine system – the shorter the allele the more efficient the receptor is in handling dopamine – associations noted between DRD4 long and a variety of approach- related behaviours o Short alleled children are less sensitive – parent sensitivity is not a large factor, they remain average in the CBCL o Children with long allele are more sensitive – great likelihood of externalizing problems with low sensitivity parents, low likelihood of externalizing problems with high sensitivity parents Are there different meaning of the environment? - Multiple meaning of environment o Exogenous (parents, peers, etc) o Endogenous (physiology, electrochemical, homeostasis, etc.) o Gene-environment interactions in the face of gene-environment correlations o There are endogenous environment conditions are orthogonal to (independent of), and interact with, some biological susceptibility factors o Consideration that the environment is OUTSIDE and INSIDE an individual – it is unique internally as well, this impacts gene expression - Similarities between exogenous and endogenous environments o Can vary from good to bad o Can be stable o can change and be dynamic o Can be conceptually as well as empirically orth
More Less

Related notes for PSYCH 3JJ3

Log In


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.