As an adult, you probably remember puberty — a time when your body went through a lot of changes. Professor James M. Tanner , a child development expert, was the first to identify the visible stages of puberty. Today, these stages are known as the Tanner stages or, more appropriately, sexual maturity ratings.
The Stages of Puberty: Development in Girls and Boys
Female Tanner Stage
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NCBI Bookshelf. Mickey Emmanuel ; Brooke R. Authors Mickey Emmanuel 1 ; Brooke R. Bokor 2. Puberty is a time of rapid and complex changes involving overlapping components: hormonal, physical, and cognitive.
The Tanner scale also known as the Tanner stages or Sexual Maturity Rating SMR is a scale of physical development in children , adolescents and adults. The scale defines physical measurements of development based on external primary and secondary sex characteristics , such as the size of the breasts , genitals , testicular volume and development of pubic hair. This scale was first identified in by James Tanner , a British pediatrician, after a two-decade-long study following the physical changes in girls undergoing puberty.