PEER EFFECTS IN SEXUAL INITIATION: SEPARATING SOCIAL NORMS AND PARTNER SUPPLY Seth O. Richards Kenneth I. Wolpin Sexual activity among adolescents is associated with risks such as pregnancy and STDs, and there is substantial policy interest in how peers influence the timing of sexual initiation. This paper measures separate effects for two social mechanisms— peer-group norms and partner availab...

Abstract How do young people interpret virginity loss, and does saving sex for marriage have any socially constructed benefit marriage? This study answers this question using data obtained from a peer-led Facebook group with more than 175,000 participants, mostly in African countries, particularly Nigeria. A reflexive thematic analysis was used to analyze 100 public wall posts 3860 comments pos...

the results of standard and augmented surgical treatment of partial accommodative esotropia have been compared in this study.in this sequential matched randomized double blind clinical trial, we studied 48 patients (96 eyes) with partial accommodative esotropia between the ages of 13 to to 144 months, referring to strabismus clinic of farabi eye hospital between 1999-2000. these patients were g...

mediastinal tracheostomy is a complex surgical procedure for the management of airway reconstruction in patients whose distal trachea is not sufficiently long to be reconstructed as cervical tracheostomy after tracheal resection for malignant diseases. in this article (study), we present our 10 year experience of this uncommon procedure in thoracic surgery ward of imam khomeini's hospital, tehr...

This article seeks to shed light on the doctrinal meanings of closed garden included in some Renaissance paintings Annunciation. To justify iconographic interpretations that we will give these paintings, base them analysis many medieval liturgical hymns poetically designate Virgin Mary through metaphorical expression hortus conclusus (closed garden) with which Husband or Bridegroom requisites W...