Your teacher may be looking for something more specific than this. But, now the idea of evolution is generally accepted and now with modern technology we can mostly prove his theory. (it isnt proven as it is a theory).
Answer: Arousal theory
Explanation:
This theory explains that people or individuals always seeks to attain the optimal level of arousal and thus will perform actions that strives to maintain such height.
Arousal theory of motivation’s directly affects an individual performances and following Yerkes-Dodson Law, implies that higher levels of arousal will improve performance till it reaches the optimum height, after which performance start to drop with further extreme increase or decrease in arousal which will cause such individual to loose concentration in performing an action.
Here, Kevin, a basketball player sinks thirty straight free throws during practice but during the critical game of the season, with the score tied and twenty seconds left to play, Kevin misses three consecutive free throws. Kevin's behavior can best be explained by arousal theory because his arousal levels was too high causing him to loose concentration and perform badly.
Observing behavior in real-world settings and making no effort to manipulate or control the situation is known as naturalistic observation. It is a research method that is most used by psychologists which they observe their test subjects in thir natural habitat without changing any parameter.
They settled around the Mediterranean and Black sea, which helped spread culture.
