The perceived urgency of speech warnings: semantics versus acoustics

The relationship between the semantics of words and the acoustics of the way they are spoken is explored. Actors spoke warning signal words in an urgent, nonurgent and monotone style, and participants rated the urgency of the words. Results showed effects for signal word and style of presentation. Acoustic analysis showed that the urgent words were spoken at higher frequency with a broader pitch range and were louder than the nonurgent or monotone words. These acoustic differences were used to synthesize artificial versions of signal words in urgent and nonurgent formats. The urgent words were rated as more urgent than the nonurgent words, a finding attributable to their differing acoustics. Within each speaking style the words were acoustically the same, yet effects for signal word were found, suggesting that semantics is also important in urgency perception. This research has implications for the design and implementation of speech warning systems, particularly those in which urgency mapping is required.     

Personality traits, perceived risk, and risk-reduction behaviors: A further study of smoking and radon.

Personality traits and risk perceptions were examined as predictors of changes in smoking behavior. Participants (N = 697) were part of a randomized controlled trial of interventions to reduce exposure to the combined hazard of radon and cigarette smoke. Participants with higher perceived risk at baseline for the combination of smoking and radon were more likely to have a more restrictive household smoking ban in place at 12-month follow-up (p p p     

Modeling relations between hassles and internalizing and externalizing symptoms in adolescents: A four-year prospective study.

This study examined the relations between hassles and internalizing and externalizing symptoms across 4 years in adolescents who varied with regard to their risk for psychopathology. The sample comprised 240 adolescents assessed in 6th, 7th, 8th, and 9th grades regarding their level of peer and academic hassles and internalizing and externalizing symptoms. Structural equation modeling was used to construct latent variables of hassles and internalizing and externalizing syndromes. Results varied by informant about the teens' symptoms. For adolescent report, the stress exposure model fit the data best for internalizing syndromes; that is, higher levels of stressors predicted significantly higher levels of self-reported symptoms 1 year later. For mother report of adolescents' symptoms, the stress generation model fit the data best for both internalizing and externalizing syndromes; that is, higher levels of adolescents' internalizing and externalizing symptoms, as reported by their mothers, significantly predicted higher levels of hassles 1 year later. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relations between neonatal behaviors and those at eight months.

To determine whether newborn behavioral assessments are related to those at 8 mo, a replication sample design was used with 4 samples (n = 400 each for Samples 1, 2, and 3 and n = 350 for Sample 4) of a nearly randomly chosen clinic population of newborns. Neonatal behavior was assessed by the Graham-Rosenblith Scales and 8-mo behavior by the Collaborative Project (Bayley) Examination. 8-mo data are available for 1,215 of 1,550 cases. In addition to analyses within replication samples, relations were examined separately for males and females, blacks and whites, and within each of 4 gestational age categories. Many relations between scores on the Neonatal Examination and performance at 8 mo were significant. Most of those found for the total were found in Sample 1 (at the .20 level or better). Fewer relations between ratings and 8-mo performance were significant. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Linguistic and location effects in compliance with pesticide warning labels for amateur and professional users

Three studies explored amateur and professional users' compliance with pesticide warning labels. Professionals were classified as people working in a profession in which the use of pesticides is a necessary part of their job. Amateurs used pesticides only in their leisure time. The first study showed that the wording used affected perception of the appropriateness of hazard statements, one of the most effective variations being the use of the personal pronoun (statements beginning "You should..."). The location of warning information was also found to affect actual compliance: Compliance increased when warning information was presented in the directions for use section. A supplemental directive increased compliance only for professional users. In a final study, "best-case" and "worst-case" linguistic variations were combined with best-case and worst-case locations for safety information. Instruction statements using the personal pronoun and presented in the directions for use section resulted in the highest levels of compliance. The differences in compliance between amateur and professional users are interpreted within the framework of Rasmussen's (1986) distinction among skill-, rule-, and knowledge-based behavior. Actual or potential applications of this research include the design of warning labels and safety information.     

Measuring dimensions of perceived e-business risks

The risks to e-business from breaches of security and privacy are well known. However, research has given very little attention to other important e-business risks. Using a socio-technical approach, in this study we survey a diverse sample of almost 200 participants to rate their perception of 16 e-business risks, compiled from the research and practitioner literature. Strategic risks, organizational risks and e-business policy risks emerged as the three underlying dimensions of e-business risk. In terms of the socio-technical model, strategic risks focus on the actor-structure component, and policy risks focus on the task-structure component. Organizational risks cover a wide spectrum of socio-technical components such as technology, actor-technology, technology structure and task-actor. The main contribution of this study is a multi dimensional scale of e-business risk perception. Practitioners can benefit by focusing their risk management efforts on the three dimensions of e-business risk, which are easier to manage than a long checklist of unrelated risks. Researchers benefit from a raised awareness on the importance of strategic and organizational risk factors in addition to policy risk factors for e-business risk management. A model that incorporates the three dimensions of e-business risks and shows theoretically based relationships with control mechanisms, trust, perceived uncertainty and profitability is proposed for testing in future research.     

Universal versus personal helplessness in depression: Belief in uncontrollability or incompetence?

The learned helplessness model of depression predicts that depressed individuals believe outcomes are more response independent than do nondepressed individuals in a skill situation. The present study assessed whether depressives' cognitive distortions are specific to their belief about their own skilled action or are a result of a general belief in uncontrollability in the world. Changes in expectancies following success and failure in skill and chance tasks were examined in 32 depressed and 32 nondepressed college students who either performed themselves or observed a confederate perform a pair of tasks. In the skill task, depressed Ss showed significantly smaller changes in expectancy than nondepressed Ss when estimating the probability of their own success. In contrast, depressed and nondepressed Ss did not differ when estimating the probability of another person's success on the identical skill task. It is inferred that depressed individuals view themselves as helpless in a skilled situation but do not view the situation itself as uncontrollable. Results are discussed in terms of the reformulated learned helplessness model. (52 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

State-of-the-art nanoplatform-integrated MALDI-MS impacting resolutions in urinary proteomics

Urine proteomics has become a subject of interest, since it has led to a number of breakthroughs in disease diagnostics. Urine contains information not only from the kidney and the urinary tract but also from other organs, thus urinary proteome analysis allows for identification of biomarkers for both urogenital and systemic diseases. The following review gives a brief overview of the analytical techniques that have been in practice for urinary proteomics. MALDI-MS technique and its current application status in this area of clinical research have been discussed. The review comments on the challenges facing the conventional MALDI-MS technique and the upgradation of this technique with the introduction of nanotechnology. This review projects nano-based techniques such as nano-MALDI-MS, surface-assisted laser desorption/ionization, and nanostructure-initiator MS as the platforms that have the potential in trafficking MALDI-MS from the lab to the bedside.