Answer:
I think it's all of them.
When setting you feel comfortable so you body starts to feel sleepy so you start to dose off to sleep.
Answer:
Life-span perspective.
Explanation:
Life span perspective may be defined as a type of development of human beings that shows the multiple frameworks of an individual. This is one of the most important perspective use in the study of psychology.
This perspective includes the all the different factors like genetics, gender, school, environment and society can influence the adolescents. These factors can influence the self esteem of the adolescents positively or negatively. The genetic factors is important to determine the physical influence of individual.
Thus, the answer is life span perspective.
