The relationship between dysfunctional metacognitive beliefs and problematic social networking sites use

Social networking sites (SNSs) enrol new subscribers each day. However, problematic SNS use has undesirable effects on psychological functioning. Therefore, it is important to identify the factors that contribute to the development of problematic SNS use. Very few studies have focused on revealing the underlying mechanisms of problematic SNS use. Although many past studies have examined the relationship between metacognitive beliefs and Internet addiction, the association between metacognitive beliefs and problematic SNS use has not been adequately explored. In this study, we aimed to explore the association between metacognitive beliefs and problematic SNS use among young adults. A total of 308 individuals participated in this study. A socio-demographic data form, the Metacognitions Questionnaire-30 (MCQ-30), and Social Media Addiction Scale (SMAS) were administered. Group comparisons were performed using multivariate analysis of covariance. Pearson's correlational and multiple linear regression analyses were conducted to examine the associations between metacognitive beliefs and problematic SNS use. The SNS addicts scored higher in all of the SMAS assessments. When compared to non-addicts, SNS addicts obtained higher scores on all the subtests of the SMAS and MCQ-30 except cognitive self-consciousness. The negative beliefs about the uncontrollability and danger of worry, cognitive confidence, and need for control thoughts were associated with SMAS mood modification, relapse and conflict subdimensions. Our findings revealed that dysfunctional metacognitive beliefs are related to problematic SNS use among young adults. These findings indicate that mental health workers should consider the modification of metacognitive beliefs in the treatment of problematic SNS use.     

手术治疗单一局部复发或远处转移病灶乳腺癌的临床观察

探索手术治疗单一局部复发或唯一远处转移病灶乳腺癌的临床价值。收集2006年6月至2013年6月湖南省人民医院乳甲外科收治的64例局部复发或术后远处转移乳腺癌患者,其中28例为单发病灶病例。根据是否采取了包含手术的综合治疗,将其分为手术组与非手术组。回顾性分析两组的临床资料和随访数据,分析手术治疗局部复发或远处转移乳腺癌有无临床意义。结果28例都采取了含化疗的综合治疗,8例局部单发病灶与9例远处单一脏器转移病例进行了手术治疗。手术组的局部缓解率与控制率明显优于非手术组,均为100％。两组无进展生存时间（PFS）和总生存时间（（）S）比较,手术组明显长于非手术组;但在单一远处脏器转移手术组中0S没有优势。2年生存率方面手术组与非手术组比较有统计学意义。对于术后单一局部复发病灶或唯一远处脏器转移的乳腺癌患者,采取含手术的综合治疗方案能带来明显的PFS优势,若有手术机会和条件成熟,手术仍是不应放弃的有效治疗方法。     

食管裂孔疝的外科治疗进展

食管裂孔疝即腹腔内脏器经食管裂孔疝入胸腔,并引发烧心、反酸等消化道及其他非消化道症状。按其解剖及临床表现可分为四型。通过病史采集、体格检查及一系列客观检查可以明确食管裂孔疝的诊断、分型及疾病进展程度。食管裂孔滑动疝并发反流、食管裂孔旁疝合并明显症状、混合型及多器官型食管裂孔疝或内科治疗效果不佳的通常应优先考虑手术治疗,以消除疝形成的因素,控制胃食管反流。食管裂孔疝手术目前通常采取腹腔镜下疝修补、补片加强及胃底折叠术,同时也存在食管延长、胃固定等其他替代术式。围手术期通过积极地控制风险因素,有助于降低各类术中、术后并发症风险及复发率。对复发、儿童及肥胖等特殊患者,也应视患者条件积极实施手术治疗。随着研究的进一步深入,食管裂孔疝手术在手术入路、补片材料、复发及并发症控制、日间手术模式应用等方面将取得更大的进展。     

社交网站中的自我呈现对自尊的影响:社会支持的中介作用

随着网络的日益普及,社交网站已成为人们活动的新领域和人际交往的新媒介。同现实交往一样,在社交网站中个体会采用不同的自我呈现策略。为探讨社交网站中自我呈现策略、社会支持和自尊的关系,采用问卷法对485名大学生进行了调查,结果发现:(1)社交网站中积极和真实自我呈现均与社会支持和自尊呈显著正相关,但真实自我呈现与领悟社会支持和自尊的相关程度更高。(2)社会支持在积极自我呈现与自尊关系中的中介效应不显著,积极自我呈现对自尊只有显著的直接预测作用;真实自我呈现对自尊不仅有显著的直接预测效应,还能通过社会支持的部分中介效应对其产生影响。     

Terrorism in the Age of the Internet: The Case of Muslim Arab Foreign Terrorist Organizations

This study focuses on Muslim Arab extremism online. It specifically looks at the case of Muslim Arab organizations identified by the U.S. Department of State as Foreign Terrorist Organizations. The use of the Internet to communicate extremist rhetoric is not a new phenomenon nor is it one that is particular to Muslims or Arabs. This study simply focuses on this specific subgroup, partially due to the increased scholarly attention to the topic of terrorism and to the public's heightened interest in the Muslim and the Arab world since 9/11.     

The immunoenhancing effects of humor on secretory IgA and resistance to respiratory infections

Abstract

In three different studies involving exposun to two differcot humorous and comparison videotapes, it was demonstrated that humor arousal signiticantly increases S-IgA in college students. Furthermore significantly more of the subjects exposed to the humor films showed an increese in S-IgA than the subjects exposed to the comparison films. A good sense of humor, measured as a trait, was associated with higher baseline concentrations of S-IgA and with greater increases in S-IgA in response to a humor arousing film. Higher bascline kvels and gains in S-IgA in respoase to humor were associated with lower reported severity of colds in the past twelve months and in the three months following assessment. However, a good sense of humor was related to lesser cold incidence and severity only if it involved appreciation rather than production of humor. While those who actively tell jokes also show higher S-IgA levels, they show greater susceptibility to colds than those who only appreciate humor probably because they sodalize more often under conditions that expose them more to cold infections.     

被动性社交网站使用与初中生抑郁的关系：链式中介效应分析

为探讨被动性社交网站使用、冗思、核心自我评价与初中生抑郁的关系,本研究采用被动性社交网站使用问卷、冗思问卷、核心自我评价问卷以及流调中心用抑郁量表对673名初中生进行调查研究。结果显示：（1）被动性社交网站使用与冗思和抑郁均呈显著正相关,而与核心自我评价呈显著负相关;核心自我评价与冗思、抑郁呈显著负相关;冗思与抑郁呈显著正相关;（2）被动性社交网站使用不仅对初中生抑郁具有显著的直接预测作用,而且能够通过三种间接效应对抑郁产生影响,即核心自我评价的单独中介作用、冗思的单独中介作用以及二者的链式中介作用。     

Afterimage oscillation after a brief light flash

Abstract: To investigate whether oscillation might appear not only in brightness but also in color dimension, we performed the following two experiments. In Experiment 1 subjects were asked to observe a moving dim light slit in the darkness with their right eye focused on a fixation point, which resulted in an afterimage appearing like a comet’s trail after the slit. The trail oscillated rapidly in brightness (four/five times), and soon disappeared. In Experiment 2, an afterimage generated by an intense color disc (S1) was projected onto a dim white disc (S2) after a controlled period of interstimulus interval. The white disc appeared oscillating slowly between the similar color and the complementary color, at least twice in approximately 40 s. The results of these experiments led us to infer that afterimage oscillations occur in both brightness and in color dimension. These oscillations are closely correlated with those caused by two physiological mechanisms: the magnosystem generating the brightness oscillation, and the opponent‐color site of the parvosystem generating the color oscillation.     

基于QQ空间的社交网站使用对青少年抑郁的影响:上行社会比较和自尊的序列中介作用

为探讨社交网站(QQ空间)使用对青少年抑郁的影响及其作用机制,在社会比较和抑郁易感性模型的视角下,采用社交网站使用强度问卷、上行社会比较问卷、自尊量表和抑郁量表,对964名中学生进行调查。结果表明:(1)在控制了性别、年龄以及社交网站使用年限后,社交网站使用对抑郁和社交网站中的上行社会比较都有显著的正向预测作用;(2)社交网站使用能通过社交网站中的上行社会比较和自尊的中介作用对抑郁产生影响,且该中介作用包含了两条路径——上行社会比较的单独中介作用以及上行社会比较-自尊的链式中介作用。本研究揭示了社交网站使用与抑郁的关系及其作用机制,深化了社交网站使用对个体影响的研究。