Psychology 1000 Chapter Notes - Chapter 4: Dyslexia, Neuroticism, Conscientiousness

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Elizabeth Campbell

Document Summary

Studying twins is effective due to the existence of identical (monozygotic) and fraternal (dizygotic) twins; results show a greater commonality in identical: problem: identical twins are treated more equally as they look, act and essentially live very similarly when compared to fraternal twins, research could conduct a rearing of identical twins in different families, this would allow us to split total variation into three components, variation attributable to genetic factors, variation due to shared family environment among reared together, variation attributable to other factors (i. e. unique experiences, manipulate two variables: identical vs fraternal / reared together vs apart. Evolutionary noise: neutral genes that do not impede nor facilitate survival needs can pass through these filters to accommodate for future environments: example: tolerance to radiation unimportant at the moment but if a nuclear war were to break out, survivors would be those with high tolerance, therefore, for natural selection to work, individual variation must be present in a relevant species characteristic.