It studies how individuals change over time and that processes that create those changes. Basic importance of development psychology is study of life. Development refers to the changes over time in the body and in the thinking or other behavior of a person that are due both to biology and to experience.
In case of a fresher how long does it take to become an anesthesiologist varies to that of a Doctor and requires around twelve years. Four years for undergraduate studies, course including organic chemistry, physics, math, anatomy, biochemistry, and molecular chemistry and then four year of medical degree.
  In order to become an anesthesiologist, you must attend at least four years of college, four years of medical school and then do a four year residency in anesthesia. So â¦ at least 12 years of school after high school.  Barney9. (An RN needs 1 to 2 years after college to become a nurse  anesthetist.)   It takes 4 years of Undergraduate Study at a University of your  choice, 4 years at a Medical School of your choice, and about 2-4  years of Internship.