Most indigenous research is done in Asia, and is almost absent in Africa. South Africa is largely Western and individualist, and so fails to reflect the country's more collectivist indigenous culture.
Sleep serves the function of keeping animals fairly immobile and safe from predators. However, species that are in danger from predators sleep relatively little to remain vigilant.
The formation of relationships from research studies, suggest that there are many factors involved, such as proximity, similarity and physical attractiveness.
One approach would be the behaviorist approach, which claims that all behaviors are accumulated through learning.
Behaviorist - Medical Model/Disease Model - Forerunner of the biological approach, abnormality is a disease or illness precipitated by internal physical causes.
心理学，A Level的核心科目之一。大家需要注意的是，这里的A Level心理学是更加偏向理科一点。