Examine one evolutionary explanation of behavior
Before we had the technology to look at genes specifically, a theory was used to explain how we’ve adapted the traits we have today. Darwin’s theory was that those who adapt best to an environment will have a greater chance of surviving, having offspring, and passing their genes to their offspring. As our environment is always changing, we need to adapt our characteristics to survive in that specific environment. It is the whole aspect of adaptation. It is said that those who are better suited for a certain environment will be more like to breed and pass on these genes also known as natural selection. Through research, it suggests that our emotions are evolutionary as they are universal therefore we adapt survival instincts that are all the same no matter culture or background.
It is argued that humans also share many of the same feelings and emotions as primates do, for example, the mates they choose, mother-offspring love, survival instincts. Similarly to apes, we humans also use facial expressions to show emotion. No matter where you are from, our facial expressions to express emotions are innate, they are an adaptive trait in our genes, and everybody has them. An experimental study was performed to test this theory by Ekman and Friesen (1971) to see if underlying facial expressions correspond to basic emotions on a universal level. Ekman travelled to New Guinea to the Fore tribe who have never been exposed to the western world and showed them images of faces with basic facial expressions (also tested by Western candidates). They then had to match the faces with a selection of emotions. The independent variable of the experiment was the Fore tribe and the western people (culture). The use of trial and error was a great thing in this experiment because the researchers tested different methods of performing this