Development and validation of the self-harm reasons questionnaire

Understanding the reasons for self-harm (SH) may be paramount for the identification and treatment of SH behavior. Presently, the psychometric properties for SH reason questionnaires are generally unknown or tested only in non-inpatient samples. Existing inpatient measures may have limited generalizability and do not examine SH apart from an explicit intent to die. The present study examined a newly developed, self-report measure of reason for self-harm. The Self-Harm Reasons Questionnaire (SHRQ) was administered to 143 undergraduate students. Results indicated that SH reasons covaried in meaningful and internally consistent ways, with subgroups of SH reasons correlating with hypothesized concomitants of SH, such as depressive symptoms. Findings have implications for prevention and intervention and the SHRQ offers a new, albeit preliminary, means by which to examine SH reasons in a non-inpatient sample.     

A meta-analytic study of self-help interventions for anxiety problems

The present study examined the effectiveness of self-help (SH) interventions for individuals with anxiety problems. Thirty-three studies, targeting a variety of anxiety disorders and problems, met criteria for inclusion with 1,582 clinical and subclinical participants. Self-help formats included books, audio/videotapes, and computer/Internet-based programs. The average effect sizes (Cohen's ds) comparing SH interventions to control groups for target symptoms were .62 at posttreatment and .51 at follow-up. When compared to therapist-directed interventions (TDIs), the average effect sizes (Cohen's ds) for target problems were -.42 at posttreatment and -.36 at follow-up. Format of SH materials, type of target disorder, presence of minimal therapist contact, and other study parameters were examined for their effect on treatment outcome. The results were discussed from the perspective of a stepped-care approach for anxiety problems.     

An Empirical Examination of Same- and Other-Gender Sexual Harassment in the Workplace

This study examines sexual harassment (SH) whichinvolves members of the same gender, either male orfemale. Data are taken from the 1988 Department ofDefense Survey of Sex Roles in the Active Duty Military. Separate comparisons for male (38% White, 31%Black, and 31% ‘other’) and female (48%White, 27% Black, and 25% ‘other’) targetsare made between sameand other-gender SH related to fourmajor components of a conceptual model proposed by Fitzgerald,Drasgow, Hulin, Gelfand, & Magley (1997). Thesecomponents include sexual harassment behaviors, personalvulnerability, target response styles, and consequences of the SH for the target. The sexualorientation of targets and perpetrators is notconsidered because data were unavailable. Results reveala number of meaningful differences between sameandother-gender SH. The most striking result is that maletargets of same-gender SH experience consequences thatare significantly more pervasive and severe than thoseexperienced by male targets of other-gender SH.Organizational implications are discussed.     

Interfacial waves between two magneto-electro-elastic half-spaces with magneto-electro-mechanical imperfect interface

The propagation of shear horizontal waves between the interface of two magneto-electro-elastic materials with an magneto-electro-mechanical imperfect contact has been studied. Mechanical, electrical and magnetical imperfections are modelled by means of a spring, a capacitor and an inductor, respectively. A general expression for the dispersion relation is given in an explicit form. Some limit cases are analysed in detail. The influence of imperfect contacts is shown in some numerical results.     

Interfacial waves between piezoelectric and piezomagnetic half-spaces with magneto-electro-mechanical imperfect interface

Abstract

We study the propagation of shear horizontal waves between the interface of piezoelectric and piezomagnetic half-spaces with a magneto-electro-mechanical imperfect contact. Mechanical, electrical and magnetical imperfections are modelled by means of a spring, a capacitor and a inductor, respectively. A general expression for the dispersion relation not reported previously in literature is given in an explicit form, with the diverse limit cases analysed in detail. In some of these limit cases, new expressions are also obtained which predict the existence of interfacial waves. In the other cases, when already reported results exist, a comparison with them is done. Some physical interpretations are derived from the limit cases. The influence of mechanical, electrical and magnetical imperfect contacts are shown in some numerical examples.     

Perceptions and attitudes to sexual harassment: an examination of sex differences and the sex composition of the harasser–target dyad

This study examines the role of sex in determining attitudes toward sexual harassment (SH) and perceptions of SH, and studies the extent to which attitudes toward SH predict perceptions of SH by sex. All informants (146 men and 160 women) completed three questionnaires: personal information; perceptions of SH, including cases with variations on the perpetrators and victims' sex; and attitudes toward SH, with a male, female, or unspecified victim. The findings point to significant sex differences in the perception of behaviors as SH. Women were less tolerant of SH regardless of the victim's sex. In all cases, less tolerant attitudes toward SH predicted a stronger perception of behaviors as manifesting SH. In addition, women tended to perceive male harasser/male target behaviors as SH more than men.     

Is Workplace Harassment Hazardous to Your Health?

We examined cross-sectional and lagged effects of sexual harassment (SH) and generalized workplace harassment (GWH) on incidence of self-reported illness, injury, or assault in a sample of over 1,500 university employees. SH and GWH, but not other job stressors, were related to increased odds of illness, injury, or assault. This was true when SH, GWH, and illness, injury, or assault were measured at the same time point, as well as when SH and GWH were measured in year prior to illness, injury, or assault.The data presented here are part of an ongoing longitudinal study of workplace harassment conducted at the Department of Psychiatry of the University of Illinois at Chicago. This research was supported by the National Institute on Alcohol Abuse and Alcoholism (grants AA09989 and AA13332). Portions of this paper were presented at the annual meeting of the Society for Industrial and Organizational Psychology, April 2004, Chicago, Illinois. The data were collected by the Survey Research Laboratory at the University of Illinois at Chicago.     

Kinetics of formation of interfaces between immiscible polymers

The kinetics of the formation of the interfacial width between immiscible polymer pairs are studied using neutron reflectivity. Bilayers of deuterated polystyrene (d-PS) and poly(methyl methacrylate) of high molecular weight are used. The time dependence of the formation of the interface in both cases where the thickness of the top d-PS layer is thin (less than 200 Å) and thick (greater than 1000 Å) is investigated. Following an initial rapid increase, a logarithmic dependence of the interfacial width on time is observed. We interpret this result as arising from the slow equilibration of long-wavelength capillary-wave fluctuations; comparison of our results with theory yields a value of the interfacial tension in good agreement with the self-consistent field theory prediction.     

规则多边图形的离散度与图形信号认知绩效的关系

用实验方法研究规则多边图形的离散度与图形信号认知绩效的关系。实验的自变量是图形的离散度参数,因变量是单位时间图形信号的视觉通道信息传递量。实验的刺激材料是２５个离散度为０．３～０．７的规则多边图形。刺激材料的呈现与被试的反应记录都由计算机控制。结果表明：离散度适中（０．５左右）及偏小的图形信号认知绩效较高,离散度从０．５增大到０．６,认知绩效迅速下降,离散度继续增大,认知绩效仍有下降,但趋势平缓。     

Complexity in object manipulation by Japanese macaques (Macaca fuscata): a cross-sectional analysis of manual coordination in stone handling patterns

Defined as a spontaneous stone-directed noninstrumental manipulative behavior, and comprised of multiple one-handed and (a)symmetrical/(un)coordinated two-handed patterns, stone handling (SH) is a good candidate for the study of complexity in object manipulation. We present a cross-sectional developmental analysis of SH complexity in Japanese macaques (Macaca fuscata), through the combined investigation of bimanuality, coordination, and symmetry in hand use. Bimanual SH patterns were more frequent than unimanual patterns. Among bimanual patterns, coordinated actions were more frequent than uncoordinated ones. We recorded five asymmetrical coordinated SH patterns with manual role differentiation, a form of hand use reminiscent of complex actions involving the use of tools in monkeys and apes. Bimanuality in SH was affected by body posture. Aging individuals performed less bimanual and less coordinated SH patterns than younger individuals. Our result on senescent males performing less bimanual patterns than senescent females was consistent with sex differences found in the late deterioration of complex manual movements in other species. Although some SH patterns represent a high degree of behavioral complexity, our results suggest that SH behavior is not as complex as tool-use or tool-manufacture in other nonhuman primates and hominids.     

Interpersonal Violence Victimization and Sexual Harassment: A Prospective Study of Revictimization

This study examined associations between past interpersonal victimization (including both child and adult victimization) and sexual harassment (SH); and it examined intervening and moderating variables of the association of past victimization with SH, including posttraumatic stress symptoms (PTSS) and job-gender context. In addition, we examined an alternative hypothesis for revictimization that abuse survivors are hyper-sensitive to perceptions of sexual harassment. Employed women residing in Kentucky (U.S.) who had received an order of protection from a male partner and who were followed-up 12 months later (n?=?445, 78 % White, mean age?=?31.98, SD?=?8.60) were selected for this analysis. SH experienced between baseline and follow-up interviews was associated with baseline assessments of child nonsexual assault experiences (r?=?0.24, p?<?0.001) and intimate partner violence victimization (r?=?0.20, p?<?0.000), demonstrating a revictimization effect. PTSS mediated the relationship between child sexual assault, child nonsexual assault and subsequent SH. Further, working in a job with a male supervisor or in a male-dominated workgroup increased associations between child nonsexual abuse and subsequent SH. No support was found for the hyper-sensitivity hypothesis. Findings are consistent with prior research that identifies sexual harassment as a form of interpersonal violence that mental health and victim service providers and researchers should include in their assessment and treatment strategies. Employers should also understand that working in male-dominated work environments compound the risk of sexual harassment for those with prior abuse histories and should be vigilant to reducing these risks.     

Public Perceptions of Sexual Harassment: An Empirical Analysis in Israel from Consensus and Feminist Theoretical Perspectives

Sexual harassment (SH) includes men as harassers and women as victims. It is defined in many Western countries as a criminal offense. However, the social response to SH may be characterized by clear leniency toward harassers. The present study investigated the roots of such response. Respondents from a large, representative, random, Israeli sample (630) were asked to evaluate hypothetical short crime scenarios, constructed by the factorial-survey approach, representing cases of sexual harassment and other offenses. The study hypothesized that respondents’ perceptions of SH scenarios will be affected significantly by their gender-role attitudes to women. The findings indicate that such criminal acts are perceived as serious by the whole public, challenging the consensual basis of the lenient approach to harassers.     

Violent self-harm in schizophrenia

Patients with schizophrenia have a substantial lifetime suicide risk, especially by violent means. Little published work exists on self-harm (SH) in this population. The goal of this study was to examine whether patients with schizophrenia were also more likely to self-harm in a violent manner. A retrospective analysis performed on method, motive, and suicidal intent in patients with schizophrenia (n = 50) and adjustment reaction (n = 138) who presented with SH over a 3-year period found that there was no significant difference between the two groups in terms of violence of method or suicidal intent. Presence of positive symptoms of schizophrenia was not significantly associated with use of a violent method. This study suggests that the expected pattern of violent SH in schizophrenia is inaccurate and for the majority the acts are of a similar nature to those seen in adjustment reactions.     

The memory-impairing effects of septal GABA receptor activation involve GABAergic septo-hippocampal projection neurons

Septal infusions of the gamma-aminobutyric acid (GABA)(A) agonist muscimol impair memory, and the effect likely involves the hippocampus. GABA(A) receptors are present on the perikarya of cholinergic and GABAergic septo-hippocampal (SH) projections. The current experiments determined whether GABAergic SH projections are involved in the memory-impairing effects of septal GABA(A) receptor activation. Experiment 1 tested whether combining septal co-infusions of subeffective doses of muscimol with scopolamine, a drug that selectively influences GABA SH projections, would produce memory deficits. Experiment 2 tested whether hippocampal infusions of a GABA(A) receptor antagonist would block the effects of septal muscimol infusions. Fifteen minutes prior to assessing spontaneous alternation (SA) or training in a multiple trial inhibitory avoidance (CMIA) task, male Sprague-Dawley rats were given septal infusions of vehicle, muscimol, scopolamine, or co-infusions of muscimol with scopolamine, or septal infusions of vehicle or muscimol combined with hippocampal infusions of vehicle or bicuculline. Septal co-infusions of muscimol with scopolamine significantly impaired SA and CMIA. Hippocampal bicuculline infusions blocked deficits produced by septal muscimol infusions in SA and attenuated deficits produced in CMIA. Combined, these findings suggest that GABAergic SH projections are involved in the memory-impairing effects of septal GABA receptor activation.     

Interhemispheric interaction and egocentrism: the role of handedness in social comparative judgement

Previous research has shown that people are egocentrically biased when making judgements that require a self-to-peer comparison - leading to above-/below-average effects and comparative optimism/pessimism. Two experiments examined whether interhemispheric brain connectivity (assessed via strength of handedness) is associated with egocentrism in the comparative judgement process. In Experiment 1, strong handers (SH) and mixed handers (MH) made percentile rank judgements about their abilities in easy and hard domains. In Experiment 2, SH and MH judged their likelihoods of outperforming a co-participant in easy and hard tasks. Both experiments showed that SH were more egocentric than MH and thus showed (a) more above- and below-average effects when estimating their abilities (Experiment 1) and (b) generally larger optimism biases when predicting performances in a competition (Experiment 2). Taken together, these experiments provide evidence that underlying interhemispheric connectivity shapes egocentrism in comparative judgement.     

Shear horizontal surface waves in piezoelectric materials with surface stress

ABSTRACT

The propagation of shear horizontal (SH) surface waves in piezoelectric semi-infinite bodies is investigated theoretically. The surface stress exerting on the boundary is taken into account through surface piezoelectricity theory, and the velocity ranges and existence conditions of such surface waves for both electrically open and shorted cases are derived in detail. Analysis results show that the SH surface waves occurring with surface stress are dispersive in contrast to the classical situation, and the propagation characteristics strongly depend on the relative value of surface elasticity, surface piezoelectricity and surface density.     

The significance of unusual acts in sexual homicide

In addition to being an unusual form of crime, sexual homicide (SH) sometimes includes unusual crime scene behaviours, such as carving on the victim, evisceration (i.e., removal of internal organs), skinning the victim, cannibalism and vampirism. The current study investigates these unusual crime scene behaviours to better understand their meaning as well as to explore whether such behaviours are associated with a specific crime-commission process. Using a sample of 762 SH cases, the study uses a combination of chi-square and stepwise forward logistic regression analyses to identify the differences between cases with and without unusual acts. Findings reveal that SH cases with unusual acts present a specific crime-commission process. This crime-commission process is characterised by a greater level of sadism—as demonstrated by the presence of mutilation and foreign object insertion—as well as a greater level of organisation from the selection of a contact location where the risk of being seen or heard was low. These findings provide a better understanding of these behaviours and could help investigators facing such cases.     

A META-ANALYSIS OF THE ANTECEDENTS AND CONSEQUENCES OF WORKPLACE SEXUAL HARASSMENT

Sexual harassment (SH) has been identified as one of the most damaging and ubiquitous barriers to career success and satisfaction for women. This study meta-analyzed data from 41 studies, with a total sample size of nearly 70,000 respondents, to examine several negative consequences of workplace SH as well as how situational factors may play a role in facilitating these occurrences. SH experiences are associated with negative outcomes such as decreased job satisfaction, lower organizational commitment, withdrawing from work, ill physical and mental health, and even symptoms of post-traumatic stress disorder. In addition, organizational climate for SH figured prominently in facilitating these occurrences.     

Moderating Effects of Personal Cognitions on Experienced and Perceived Sexual Harassment of Women at the Workplace

This study investigated actual and perceived sexual harassment (SH), as well as the discrepancy between them of women in the workplace, as related to several factual and perceptual variables which were selected on the basis of theoretical considerations and previous findings (i.e., harasser status, workplace sex ratio, and perceptions of intensity of intergender interaction, normative beliefs about SH, and personal attractiveness). The sample included 138 women. employed in four organizations, who responded to anonymous questionnaires. Results showed that women reported engagement in diverse actual SH episodes, which varied in frequency (2% to 27%) along five levels of SH severity continuum. Only 10.1% of the women perceived these episodes as sexual harassing. It was found that the higher the severity of the SH episode, the stronger was the tendency to perceive it as sexual harassing. While actual SH was found to be significantly correlated with all research variables ( R = .49), perceived SH was only related to normative beliefs about SH ( r = .38), and the discrepancy mainly to personal attractiveness ( r = -.21). Various implications of the findings were discussed in light of social judgment perspective.