Evolution has developed various human behaviors and characteristics over many centuries. Human life is a typical life course that includes growth phases classified into physical, physiological, and behavioral characteristics. Physical characteristics include muscle growth in humans, someone's weight whether they are heavy or light, and someone's emotions or difficulties, such as someone's reaction to an action that has occurred. The stages of life are parental life, infancy, childhood, adolescence and adulthood which also includes old age. The study of human development is a study of the life of a human being and includes the changes that are involved in the lifespan of a human being from a fetus to an elderly human being. In the course of human development, humans experience perception, language, sexual selection, memory, and many other developments. According to the Australian Museum: Human evolution did not stop when our species appeared. Physical and genetic changes have occurred within our species and will continue to occur at a basic level as new genes evolve. However, these changes may not be as dramatic as they were in the past since today's situation is not conducive to the evolution of a new human species. Humans have escaped in many different ways through childhood into adulthood through time. Since the beginning of time, humans have always evolved and adapted to changes in environments or their culture. According to Leda Cosmides and John Tooby “The goal of research in evolutionary psychology is to discover and understand the structure of the human mind”. This means that while we study the evolution of psychology we also study the human mind. Different populations have changed over time. due to regional effects and different lifestyles. Acco... middle of paper... everything affects the way people live and how they can adapt and get used to the different changes that happen and evolve during the life of a human being. From the beginning of life until old age someone has gone through strong changes, for example behavioral, while they are no longer as enthusiastic or energetic as they were when they were younger because they have evolved with life and matured and aged as they developed they got rid of the characteristics they previously possessed. According to the Australian museum: “Recent DNA studies (since 2007) confirm that genetic traits changed or adapted to new environments during this period. In fact, the rate of DNA change, and therefore the rate of evolution, has accelerated over the last 40,000 years. Areas of the human genome still appear to be under selection for factors such as disease and skin color.