Objective: Youth smoking has long been a major concern at individual, familial, and national levels. The purpose of the current study was to investigate the role of parent-child relationship in the smoking behavior and smoking intensity among college students. We also aimed to investigate gender-specific variations in the association between mother-child and father-child relationships and smoking behavior and its intensity among female and male college students.
Methods: The sample consisted of college students (N=242: 142 smokers, 99 nonsmokers) who were selected using snowball sampling method among the students of Guilan University. Participants completed the parent-child relationship survey and Fagerstrom Test for Nicotine Dependence. Binary and multinomial logistic regressions were used for analyzing.
Results: Results showed that mother-child relationship, but not father-child relationship, was the significant predictor of smoking status. Also, mother-child relationship could predict low to moderate levels of dependence on nicotine. Finally, among male students, mother-child relationship was the significant predictor of smoking. Neither mother-child nor father-child relationships were the significant predictors of smoking status among female students.
Conclusion: Further research is needed to clear our understanding of gender-specific correlates of smoking among youth.

Objective: The aim of this study was to investigate the interactional relationship between behavioral inhibition and cognitive factors which lead to social anxiety. 
Methods: This is a cross-sectional study involving 408 participants who were recruited using convenient sampling method. All participants completed four questionnaires namely Social Phobia Inventory, Behavioral Inhibition Scales, Focus Attention Questionnaire, and Consequences of Negative Social Events Questionnaire. Data were analyzed by path analysis using LISREL software.
Results: There was a significant correlation of cognitive factors with each other (P<0.05). Behavioral inhibition and cognitive factors had a significant effect on upgrading social anxiety. This confirms the casual model that social anxiety is caused by behavioral inhibition along with mediation by cognitive factors.
Conclusion: This study may serve as a tool for screening and predicting the occurrence of social anxiety in students. According to the mediating effect of cognitive factors on behavioral inhibition in rising social anxiety, this knowledge can be used for prevention and treatment of social anxiety.