NU FS100 Study Guide - Midterm Guide: Cerebral Cortex, Natural Selection, Parental Investment

• School: University of Alberta
• Department: Nutrition and Food Sciences
• Course: NU FS100
• Professor: Wendy Wismer

Document Summary

The more information behind the theory=more support. Deduction - starts with a theory, leads you to collect data (general to specific) Induction start with data, forms a theory (specific to general) Parsimony simpler theory the better (less assumptions) Possible to make a continuous variable into a categorical variable (ex. Not always possible to make categorical into continuous. Must be at least two levels of the manipulated variable. Correlation: pos or neg 0-1 (r=correlation coefficient, does not demonstrate causality. May be an underlying variable (3rd variable problem) 3rd variable problem: confounding variables (cid:862)(cid:374)uisa(cid:374)(cid:272)e (cid:448)aria(cid:271)le(cid:863) that (cid:373)a(cid:455) i(cid:374)flue(cid:374)(cid:272)e our depe(cid:374)de(cid:374)t (cid:448)aria(cid:271)le to (cid:373)ake us believe there is correlation between x and y when the correlation may be between x and z. Establishing causality (john stewart mill: co-variation, see a correlation, temporal sequence, changes in variable x must happen before changes in variable y, does x cause y or does y cause x, eliminate confounds.