驾驶员在交通场景中的变化视盲及其启示

变化视盲(change blindness)现象,也称变化盲,是指视觉情景中人们不能觉察到某个事物变化的现象。研究以驾驶员为主体探讨了道路交通领域中的变化视盲现象。首先,从场景变化特征和驾驶员特征两个方面综述了影响驾驶员变化视盲的影响因素;其次,结合影响因素与变化视盲的特征理论建立了驾驶员变化检测的认知过程模型;最后,在模型的基础上,讨论了提高驾驶员变化检测能力的实际意义和潜在措施,并对未来有关交通安全变化视盲的研究予以展望。     

浅析神经外科中的诊疗思路和思维方式

应该注重培训年轻医生在临床中学会应用哲学思想和思维方式,真正认识事物的本质.这对于诊断、治疗、科研、创新有事半功倍的作用,可避免片面性、盲目性,减少医源性偏差与失误,提高治愈率和生活质量.一般通过三种思维方式即理论、工程及评价思维思考疾病,如蛛网膜下腔出血的病因、临床特点、检查方法、诊疗思路、预后和转归,最终达到预期的疗效.     

Suicidal Ideation in Gay Men and Lesbians in South Korea: A Test of the Interpersonal‐Psychological Model

Gay men and lesbians in South Korea are alienated and stigmatized due to the country's low tolerance of social differences, resulting in distress and suicidal impulses. This study investigated the predictors of suicidal ideation in a gay and lesbian group in South Korea based on the interpersonal‐psychological theory of suicide. Differences between the gay and lesbian group and the heterosexual group were found in the direct path between perceived burdensomeness and suicidal ideation. The relationship was significant for both groups, but the path coefficient was greater for lesbians and gay men than for heterosexuals. These findings imply that perceived burdensomeness may be a more critical factor in suicidal ideation of lesbians and gay men.     

The Moderating Effect of the Negative Impact of Recent Life Events on the Relation between Intrinsic Religiosity and Death Ideation in Older Adults

Researchers tested the hypothesis that the negative impact of recent life events would moderate the relationship between intrinsic religiosity and death ideation in older adults. Participants (n = 272) completed assessments of death ideation, intrinsic religiosity, and negative impact of recent life events. We confirmed the presence of concurrent moderation and found that older adults with greater negative impact of recent life events and high intrinsic religiosity reported greater death ideation. These relatively surprising findings may be due to reduced fear of death in intrinsically religious older adults, an explanation consistent with previous research.     

Assessing Motivations for Suicide Attempts: Development and Psychometric Properties of the Inventory of Motivations for Suicide Attempts

This study describes the psychometric properties of the Inventory of Motivations for Suicide Attempts (IMSA). The IMSA was designed to comprehensively assess motivations for suicide emphasized by major theories of suicidality. The IMSA was administered to two samples of recent suicide attempters, undergraduates (n = 66) and outpatients (n = 53). The IMSA exhibited a reliable two‐factor structure in which one factor represented Intrapersonal motivations related to ending emotional pain, and the second represented Interpersonal motivations related to communication or help‐seeking. Convergent validity and divergent validity of IMSA scales were supported by expected patterns of correlations with another measure of suicide motivations. In addition, the IMSA scales displayed clinical utility, in which greater endorsement of intrapersonal motivations was associated with greater intent to die, whereas greater endorsement of interpersonal motivations was associated with less lethal intent and greater likelihood of rescue. Findings suggest the IMSA can be of use for both research and clinical purposes when a comprehensive assessment of suicide motivations is desired.     

Motivations for Self‐Injury,Affect, and Impulsivity: A Comparison of Individuals with Current Self‐Injury to Individuals with a History of Self‐Injury

Individuals who report nonsuicidal self‐injury (NSSI) are characterized by the tendency to act rashly while experiencing distress (negative urgency), the tendency to act without thinking, and endorsement of both social and affect regulation motives for the behavior. However, very little research has identified characteristics that distinguish current self‐injurers from those with a history of the behavior. The purpose of this study was to compare individuals with current self‐injury to a history of self‐injury on impulsivity‐related personality traits, motives for self‐injury, and distress. Among a sample of 429 undergraduates, 120 reported self‐injury. Among these 120 individuals, 33 endorsed self‐injury within the past month, with a mean frequency of 4.77 acts of NSSI. Within the self‐injury group, current self‐injurers reported higher endorsement of affect regulation motives for NSSI, and higher levels of current negative affect than individuals with a history of self‐injury. There were no differences between current and former self‐injurers on measures of impulsivity, endorsement of social motives for NSSI, or positive affect. We propose that individuals who use NSSI to regulate negative affect may be more likely to repeatedly engage in this behavior over time.     

Suicide Ideations,Suicide Attempts,and Completed Suicide in Persons with Pathological Gambling and Their First‐Degree Relatives

We examined the relationship between suicidal ideations and attempts in 95 probands with pathological gambling (PG), 91 controls, and 1075 first‐degree relatives. The results were analyzed using logistic regression with generalized estimating equations. Thirty‐four PG probands (35.8%) and 4 controls (4.4%) had attempted suicide (OR = 12.12, p < .001); in 13 probands, the attempt occurred before PG onset. Lifetime suicidal ideations occurred in 60 PG probands (63.2%) and 12 controls (13.2%) (OR = 11.29, p < .001). Suicidality in PG probands is a marker of PG severity and is associated with greater psychiatric comorbidity. Offspring of PG probands had significantly higher rates of suicide attempts than control offspring.     

粘连性小肠梗阻发病机制与预防进展

腹部手术后,机体在修复过程中会产生一系列生物化学与细胞学反应,导致腹腔粘连形成.尽管粘连形成具有一定保护性意义,但是粘连也是导致术后小肠梗阻的最主要病因.研究发现,纤维素沉积与降解之间的平衡关系,对于粘连性小肠梗阻的发病机制起着重要作用.     

Risk Factors,Warning Signs,and Drivers of Suicide: What Are They,How Do They Differ,and Why Does It Matter?

Research investigating suicide attempts and deaths by suicide has yielded many specific risk factors and warning signs for future suicidal behaviors. Yet, even though these variables are each valuable for suicide prevention efforts, they may be limited in their applicability to clinical practice. The differences among risk factors, warning signs, and “drivers,” which are person‐specific variables that lead individuals to desire death by suicide, are highlighted. The scarce evidence on drivers is described and specific recommendations for conducting future drivers‐focused research and targeting them in clinical practice are suggested.     

Identifying and Referring Youths at Risk for Suicide Following Participation in School‐Based Gatekeeper Training

Gatekeeper training is a core strategy of the Garrett Lee Smith Memorial Suicide Prevention Act of 2004. Using data gathered from school‐based gatekeeper trainings implemented by GLS grantees, this analysis examines training and gatekeeper factors associated with (1) identification and referral patterns and (2) services at‐risk youths receive. Time spent interacting with youths was positively correlated with the number of gatekeeper identifications and knowledge about service receipt. Gatekeepers who participated in longer trainings identified proportionately more at‐risk youths than participants in shorter trainings. Most gatekeeper trainees referred the identified youths to services regardless of training type.