The Role of Perceived Voice and Speech Characteristics in Vocal Emotion Communication

Aiming at a more comprehensive assessment of nonverbal vocal emotion communication, this article presents the development and validation of a new rating instrument for the assessment of perceived voice and speech features. In two studies, using two different sets of emotion portrayals by German and French actors, ratings of perceived voice and speech characteristics (loudness, pitch, intonation, sharpness, articulation, roughness, instability, and speech rate) were obtained from non-expert (untrained) listeners. In addition, standard acoustic parameters were extracted from the voice samples. Overall, highly similar patterns of results were found in both studies. Rater agreement (reliability) reached highly satisfactory levels for most features. Multiple discriminant analysis results reveal that both perceived vocal features and acoustic parameters allow a high degree of differentiation of the actor-portrayed emotions. Positive emotions can be classified with a higher hit rate on the basis of perceived vocal features, confirming suggestions in the literature that it is difficult to find acoustic valence indicators. The results show that the suggested scales (Geneva Voice Perception Scales) can be reliably measured and make a substantial contribution to a more comprehensive assessment of the process of emotion inferences from vocal expression.     

Invited article: Face,voice, and body in detecting deceit

Studies based on mean accuracy of a group of subjects suggest that most observers do no better than chance in detecting the lies of others. We argue that a case-by-case methodology, like that used in polygraphy studies may be more useful. Three behavioral measures (two kinds of smiles and pitch) were used to make predictions about the lying or truthfulness of each of 31 subjects. A case-by-case analysis of the hits and misses achieved in this way yielded an over-all accuracy of 86%. The effect on lie detection accuracy of individual differences in the use and control of different behavioral channels is discussed.Paul Ekman's work is supported by a Research Scientist Award from the National Institute of Mental Health (MH 06092).     

Robust Bayesian methods in simple ANOVA models

A robust Bayesian analysis in a conjugate normal framework for the simple ANOVA model is suggested. By fixing the prior mean and varying the prior covariance matrix over a restricted class, we obtain the so-called HiFi and core region, a union and intersection of HPD regions. Based on these robust HPD regions we develop the concept of a ‘robust Bayesian judgement’ procedure. We apply this approach to the simple analysis of variance model with orthogonal designs. The example analyses the costs of an asthma medication obtained by a two-way cross-over study.     

Suitability of physical activity questionnaires for older adults in fall-prevention trials: a systematic review

The purpose of the study was to identify physical activity questionnaires for older adults that might be suitable outcome measures in clinical trials of fall-injury-prevention intervention and to undertake a systematic quality assessment of their measurement properties. PubMed, CINAHL, and PsycINFO were systematically searched to identify measurements and articles reporting the methodological quality of relevant measures. Quality extraction relating to content, population, reliability, validity, responsiveness, acceptability, practicality, and feasibility was undertaken. Twelve outcome measures met the inclusion criteria. There is limited evidence about the measures' properties. None of the measures is entirely satisfactory for use in a large-scale trial at present. There is a need to develop suitable measures. The Stanford 7-day Physical Activity Recall Questionnaire and the Community Health Activities Model Program for Seniors questionnaire might be appropriate for further development. The results have implications for the designs of large-scale trials investigating many different geriatric syndromes.     

Facial reactions in preschoolers: A descriptive study

The facial behavior during a marble rolling game was analyzed for two samples of children between the ages of 2 and 5 years using the Facial Action Coding System (FACS). In addition, for a subsample of children temperament ratings were available. Analysis of coding reliability showed that frequency as well as temporal location coding can be reliably performed for preschoolers. The facial movements show a frequency distribution which is highly similar in both samples. Movements of the mouth, especially the components of smiling, and some movements of the eye region, were observed frequently. Most other facial movements were infrequent events. The more often shown facial movements were stable over a period up to 18 months. In addition, sum-scores of emotion-relevant Action Units were meaningfully related to infant temperament characteristics.     

Effectiveness and feasibility of a 10-minute employee stress intervention: Outdoor Booster Break

There is a growing recognition that workplace environments affect employee health. Nature contact exposures in the workplace have been shown to be healthful for employees. This pilot study was designed to test the feasibility and efficacy of a daily outdoor work break (Outdoor Booster Break) compared to a daily indoor break. A census of university office staff was invited to participate (N?=?244). Phase 1 focused on feasibility—participants (n?=?119) reported that the Outdoor Booster Break was feasible (74%), practical (80%), and worthwhile (83%). During Phase II we used a single-site randomized controlled trial (RCT) to examine the effects of an Outdoor Booster Break—compared with a control indoor work break group—for 4 weeks on employee stress. Perceived stress was measured at pretest and posttest for both conditions. Mean posttest stress scores were lower for both the control group (n?=?19) and the treatment group (n?=?18). A main effects ANCOVA model controlling for baseline stress revealed posttest stress was lower for the treatment group compared to controls (p?=?.041). Taking a work break appears to have stress-reducing benefits, but the Outdoor Booster Break reduced stress significantly more than an indoor break. Implications for employers, worksite health promoters, and future research are discussed.     

Smith and Rawls share a room: stability and medians

We consider one-to-one, one-sided matching (roommate) problems in which agents can either be matched as pairs or remain single. We introduce a so-called bi-choice graph for each pair of stable matchings and characterize its structure. Exploiting this structure we obtain as a corollary the “lone wolf” theorem and a decomposability result. The latter result together with transitivity of blocking leads to an elementary proof of the so-called stable median matching theorem, showing how the often incompatible concepts of stability (represented by the political economist Adam Smith) and fairness (represented by the political philosopher John Rawls) can be reconciled for roommate problems. Finally, we extend our results to two-sided matching problems.     

Der einäugige Riese: „Lösungsorientiertes Coaching“ Vom Unsinn einer problematischen Fokussierung

Solution-orientated coaching. The nonsense of an one-sides focus The Author discusses the disadvantages of the solution-orientation approach in coaching. With respect to some prejudices in theories of psychology, the dangers of an one-sided solutionorientation are analyzed. Without an understanding of intrapsychic conflicts, solution-orientated interventions may reinfore dysfunctional coping mechanisms in the client. The unconscious attractiveness of these intervention techniques for people with bonding disorders is shown. In a case example, the difference between needs and avoidance as an alternative approach is discussed.     

Determinants of voluntary CSR disclosure: empirical evidence from Germany

Currently, companies spend a great deal of effort on Corporate Social Responsibility (CSR) disclosures. CSR disclosure relates to the provision of information on companies’ environmental and social performance. From an economic perspective, companies might disclose this information to avoid or decrease potential political costs. We construct a CSR disclosure index based on the Global Reporting Initiative (GRI) guidelines. Using content analysis, we analyze 130 listed German companies’ CSR disclosures (470 firm-year observations) to investigate the determinants of these voluntary disclosure activities. Our results show that, consistent with the political cost theory, German companies’ disclosures of all CSR issues are affected by their visibility, shareholder structure, and relationship with their US stakeholders. In addition, higher profitability is associated with more environmental disclosures. Finally, size and industry membership affect the amount of CSR disclosure.