Jainism is a non-theistic Indian religion and philosophical system originating in Iron Age India. Jains compose 0.4% (around 4.2 million) of India's population, and are concentrated in the states of Gujarat, Karnataka, Maharashtra, and Rajasthan.
In short, it soon became apparent that a new stage of life â the teenage phase â was becoming a reality in America. American adolescents were displaying traits unknown among children and adults. Although the word teenager did not come into use until decades later, the teenage mindset dawned in the 1920s.
So, short answer: Tweens are those kids who say that's who they are; and teens are tween graduates. Ages of tweens very generally vary from about age 8 to about age 16 in girls and boys, both. But like any bell curve, the examples of 8 and 16 year old Tweens are fewest.