Problem
The correlation between identical twins for self-reported position on a liberal to conservative scale is 0.48. The correlation between fraternal twins for the same trait is 0.20. Sketch and upload a path analysis diagram with the independent contributions of genes, shared environment, and unique environment to this trait. Include a diagram of your paths, indicating all variables and parameters, and how you derived your equations, as well as all calculations of a^2, c^2 and e^2.