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This research study is looking at the academic achievement levels in identical and fraternal twins at the high school level through a measurable cognitive perspective. The purpose is to see if the data collected agrees with past research on how much academic achievement is due to genetics or environmental influences (nature vs nurture). Twins were asked to take three online cognitive tests and score differences were computed to determine statistical significance. I then drew connections on how much the scores were due to genetics while accounting for confounding variables in the environmental influence’s aspect. Therefore, the study concludes that the majority of academic achievement is due to genetics in both identical and fraternal twin sets. This indicates my research supports past research that shows genetics plays the majority factor in academic achievement whether twins are younger or older in age. This study is purely correlational and analyzes data with the twin method which means it in no way proves anything but rather shows a connection between academic achievement and genetics. This research adds more support to the current body of knowledge, but also brings up an important point of how future research can study environmental influences in-depth to see how it influences academic achievement beyond what can be measured in the classroom.

Twin Study: A Comparison of Nature vs Nurture on Cognitive Skills in Academic Achievement in Identical and Fraternal Twins