Tighttwat 性研究所

Throughout the recorded history of mankind, science and technology have paved the way

toward an easier and more fruitful life. Within the last hundred years, there has been a scientific

explosion which has revolutionized the manner in which we live. Only in the area of human

behavior, and particularly human sexual behavior, has science lagged. But now, in the scientific

quest for greater knowledge, many scientific institutions have begun to delve into the