The association between orbital frontal cortex (OFC) volume and aggression and impulsivity was investigated among a heterogeneous group of non-psychotic psychiatric clients. Fifteen non-psychotic subjects from two different psychiatric clinics (New England Medical Center and Lemuel Shattuck Hospital) with a variety of diagnoses were sequentially referred for magnetic resonance imaging (MRI) for...

Mosaic plots are state-of-the-art graphics for multivariate categor ical data in statistical visualization. Knowledge structures mathematical models that belong to the theory of knowledge spaces psychometrics. This paper presents an application mosaic psychometric arising from underlying structure models. In simulation trials and with empirical data, scope this graphing method space is investig...

Because of increased stress conditions in college students, updated psychometrics of the Perceived Stress Scale, 10-item version (PSS-10; S. Cohen & G. Williamson, 1988) are necessary. Participants were 281 undergraduates at 3 public universities. An exploratory factor analysis revealed a 2-factor structure measuring Perceived Helplessness and Perceived Self-Efficacy. Normative results, interna...

The alignment of sound intensity is of great importance particularly in the field of psychometrics. When sounds have different spectral content, loudness alignment becomes a more suitable tool. However, traditional models assume the source either to reside in a free field at 0° azimuth or in a diffuse field. To assess or align sound source loudness at different locations or with different radia...

Access OJJDP publications online at www.ojp.usdoj.gov/ojjdp with inadequate psychometrics, the failure to consider comorbidity (i.e., co-occurring conditions), problems with identifying sample characteristics, and a lack of information regarding when the assessments were conducted. They note that previous studies often did not define the timeframe for symptoms. However, distinguishing between l...

For decades now, it has been claimed that a way to improve software developers’ productivity is to focus on people. Indeed, while human factors have been recognized in Software Engineering research, few empirical investigations have attempted to verify the claim. Development tasks are undertaken through cognitive processing abilities. Affective states – emotions, moods, and feelings have an imp...

Numerous studies have suggested that shyness and sociability may be orthogonal personality traits, each of which are associated with distinct behavioural and psychophysiological correlates. Shyness has been linked to a variety of adverse mental health outcomes, and individuals who are high on both shyness and sociability (conflicted subtype) may be particularly at risk. The current study first ...

Throughout the history of games, representing the abilities of the various agents acting on behalf of the players has been a central concern. With increasingly sophisticated games emerging, these simulations have become more realistic, but the underlying mechanisms are still, to a large extent, of an ad hoc nature. This paper proposes using a logistic model from psychometrics as a unified mecha...

Although scientific inquiry using the Transtheoretical Model of Behavior (TTM) supports various behavior changes in multiple samples, no research was found that examined this model with women already infected with HIV. This article provides a brief overview of the related literature and describes a pilot study that evaluated TTM concepts in women at risk for, or infected with, HIV. The pilot st...