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
Association for the Scientific Study of Anomalous Phenomena Association for the Scientific Study of Anomalous Phenomena The Association for the Scientific Study of Anomalous Phenomena (ASSAP) is a UK-based education and research charity, dedicated to scientifically investigate alleged paranormal and anomalous phenomena, with a view to approaching the subject in its entirety rather than looking into the psychology of individual phenomenon. The charity also incorporates various smaller groups, providing support during investigations. Paranormal Awakening and the Midlands Ghost Research Society belong to this category. They also hold training days for would-be investigators and provide research grants. The charity also has sub-committees such as the Circles Research Program, who