Development of the human body used to approximately judge a child's age based on physical development. Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth—height and weight—accelerates in the first half of puberty and is completed when an adult
Centre for the Study of Human Learning of Human Learning' to keep this research going. Warwick University has a Personal Development course which has Self-Organised Learning together with C.S.H.L. as a Resource for helping with the course and personal development. Centre for the Study of Human Learning C.S.H.L (Centre for the Study of Human Learning) was established as a Post-Graduate Research Centre. Originally this was within the newly created Psychology Department of Brunel University.(1962). Within C.S.H.L. both research staff and post graduate students are enabled to progressively investigate the nature of human learning. It has gradually become evident that once the shackles of most forms of existing