警惕啊!基因决定论

基因已经成为２０世纪遗传学中的一个关键词基因决定论也正在走近我们的生活本文从遗传学的角度阐述了基因决定论的种种不当之处,并且指出基因的作用与人类的生活方式密切相关,而人类的全部文明史就在于克服单纯的基因决定论所带来的局限。     

The younger siblings of teenage mothers: a follow-up of their pregnancy risk

This study followed 243 younger brothers and younger sisters of parenting teens and nonparenting teens across a 1.5-year period. The average age of siblings was 13.6 years at Time 1 and 15 years at Time 2. Relative to other youths, the sisters of parenting teens exhibited a sharp increase in drug and alcohol use and partying behavior across time and had the highest pregnancy rate at Time 2 (15%). The siblings of parenting teens spent 10 hr a week caring for their sisters' children, and, for girls, many hours of child care was associated with negative outcomes including permissive sexual behavior. Findings suggest that the younger sisters of parenting teens are at very high risk of early pregnancy and that this risk becomes increasingly pronounced across time.     

A simple epidural cannula for the rat

A simple epidural cannula for use with small animals is described.     

The Purusārthas: An Axiological Exploration of Hinduism

Three doctrines have often been identified in the context of Hindu civilization as its distinctive markers: the doctrine of the varnas (or the doctrine of the four classes), the doctrine of asramas (or the doctrine of the four stages of life), and the doctrine of the purusarthas (or the doctrine of the four goals of life). The study of the last of these has been comparatively neglected and the doctrine has even been dubbed a myth (Krishna 1996, 189–205). The purpose of this article is twofold: to establish the cogency of the doctrine of the purusarthas in the face of such criticism and to indicate the directions in which the doctrine could be developed further.