This research seeks to understand how people perceive and respond to structural factors and different types of disclosure on Facebook when evaluating the profile of someone they have never met offline. Using a 2 3 2 between-subjects experimental design, this research explored the relationship between friend adding (add; no add), levels of self-disclosure (low, medium, high), and sex of the Face...

The statistical population of the research is consisted of all of the students of the Islamic Azad University of Mashhad who are studying (not graduated). Using the simple random sampling based on two categories of the boys and the girls and according to Cochran formula, 378 numbers of people were at hand as the adequate sample. For the data being more valid, 400 students (200 girls and 200 boy...

CONTEXT Early sexual initiation is associated with elevated teenage pregnancy and STD risk, yet little is known about the prevalence and correlates of sexual behavior among young adolescents. Better information is needed to guide interventions to prevent early sexual debut. METHODS Data from a 2005 survey of 4,557 sixth-, seventh- and eighth-grade students at 14 urban public schools in Southe...

conclusions we recommend interventional plans based gender aimed at improving adolescent health with regard substance abuse. objective for determining the prevalence of alcohol and other substance use as well as the factors associated with the experience of alcohol use in adolescents. patients and methods this is a population-based and cross-sectional study, which was conducted in august 2010 o...

Delinquency and substance use (SU) are commonly comorbid during adolescence. In the present study we investigate this co-morbidity with 3 main objectives: 1. Evaluate reciprocal relationships between delinquency/SU across early adolescence. 2. Assess the impact of older male friends, low parental knowledge and friends' delinquency on subsequent development and inter-relationships of delinquency...

Darwin's theory of sexual selection suggests that individuals compete with members of their own sex for reproductively relevant resources held by members of the opposite sex. Four empirical studies were conducted to identify tactics of intrasexual mate competition and to test four evolution-based hypotheses. A preliminary study yielded a taxonomy of tactics. Study 1 used close-friend observers ...

Past demonstrations of sex differences in jealousy have generally employed Buss et al.’s [Psychol. Sci. 3 (1992) 251] forced-choice methodology, a limitation criticized by DeSteno and Salovey [Psychol. Sci. 7 (1996) 367]. The present studies address this criticism by demonstrating the sex difference using both forced-choice and continuous measures of jealousy. In addition, the results distingui...

Darwin's theory of sexual selection suggests that individuals compete with members of their own sex for reproductively relevant resources held by members of the opposite sex. Four empirical studies were conducted to identify tactics of intrasexual mate competition and to test four evolution-based hypotheses. A preliminary study yielded a taxonomy of tactics. Study 1 used close-friend observers ...