I have not heard back from any volunteer note-takers. Please contact me if you are willing to share your notes. Marks for discussion 1 have been posted. Marks for discussion 2 will be posted by the end of the week marked by jenna. There are 2 copies of the textbook at dana porter and 1 at st. jerome. You have to click on a library link to see the availability. Prevalence of abnormal behaviours and psychopathology: nature vs nurture debate and interactions. Range = r from -1. 0 to 1. 0 / perfect correlations rare. Level of stress and depression post delivery: http://bmcpregnancychildbirth. biomedcentral. com/articles/10. 1186/1471-2393-11-88. Correlation graph example : negative correlation example # missed classes and exam scores. Example of longitudinal study - nagin & tremblay (1999) There must be a control group: only one variable is manipulated and tested. Subjects are randomly assigned to control or experimental groups. Subjects are not compared to each other, but to their own performance.