Auditory event perception: the source-perception loop for posture in human gait

There is a small but growing literature on the perception of natural acoustic events, but few attempts have been made to investigate complex sounds not systematically controlled within a laboratory setting. The present study investigates listeners' ability to make judgments about the posture (upright-stooped) of the walker who generated acoustic stimuli contrasted on each trial. We use a comprehensive three-stage approach to event perception, in which we develop a solid understanding of the source event and its sound properties, as well as the relationships between these two event stages. Developing this understanding helps both to identify the limitations of common statistical procedures and to develop effective new procedures for investigating not only the two information stages above, but also the decision strategies employed by listeners in making source judgments from sound. The result is a comprehensive, ultimately logical, but not necessarily expected picture of both the source-sound-perception loop and the utility of alternative research tools.     

Asking questions changes behavior: mere measurement effects on frequency of blood donation.

OBJECTIVE: This research examined the impact of completing a questionnaire about blood donation on subsequent donation behavior among a large sample of experienced blood donors. DESIGN: Participants (N=4672) were randomly assigned to an experimental condition that received a postal questionnaire measuring cognitions about donation or a control condition that did not receive a questionnaire. MAIN OUTCOME MEASURES: Number of registrations at blood drives and number of successful blood donations were assessed using objective records both 6 months and 12 months later. RESULTS: Findings indicated that, compared to control participants, the mean frequency of number of registrations at blood drives among participants in the experimental group was 8.6% greater at 6 months (p<.0.007), and was 6.4% greater at 12 months (p<.035). Significant effects were also observed for successful blood donations at 6 months (p<.001) and 12 months (p<.004). CONCLUSION: These findings provide the first evidence that the mere measurement is relevant to promoting consequential health behaviors. Implications of the research for intervention evaluation are discussed.     

Cross-Cultural Testing of Three Social Cognitive Theories: An Application to Condom Use1

The aim of this study was to test the cross-cultural validity of Fishbein and Ajzen's theory of reasoned action, Ajzen's theory of planned behavior, and Triandis' theory of interpersonal behavior and to apply them to understanding the intention to use a condom with a new partner in three ethnocultural communities: Latin American, English-speaking Caribbean, and South Asian. All respondents were recruited from multiple ethnocultural-venues using predetermined sampling frames and quotas for each community. The results indicated that the three theories have cross-cultural validity, but the theories of Ajzen and Triandis performed better than the theory of Fishbein and Ajzen. It is recommended that role beliefs and moral norm (personal normative belief) be added to Ajzen's model to maximize its predictive and explanatory ability.     

Propositions pour un positivisme

Summary The author tries to specify a philosophical attitude which could be considered a form of Positivism, but this does not necessarily mean that it coincides with the doctrine of Auguste Comte or with that of the Vienna Circle.In order to facilitate the exposition the author formulates eight theses whose abrupt character is merely a consequence of the manner of presentation and by no means a manifestation of dogmatism.Eachdatum presents itself as finite experience (1) which is organized with the help ofsymbols, either on the level of perception or on the level of language (2). Inside the perception itself a reduction of experience which is essentially pragmatic first constitutes thephenomena (3). Theobject which is constituted by science on the basis of the phenomena is merely structural and always delimited (4). Its constitution is unceasingly revisable and it never corresponds to an alleged essence of reality.What is here called dialectic never consists in a set of rules governing a movement of phenomena, objects, or ideas; it is a general, historical movement of experience itself, taken as a whole, and the specific movement of the symbolic statements which inform it. One should not confuse it with a kind of general logic, nor with a so-called science of totalities (5). Logic explains the rules of the symbolic systems (6), andscience is the mediate determination of objects by means of the symbolism, and is not an immediate determination of reality (7). It constructs coherent and effective models of phenomena.As far asphilosophy is concerned, it wishes to interpret experience as a totality, not-withstanding experience's finitude as datum (8). Thus it is radically distinguished from science in that philosophy does not intend to construct models, but to explain the meanings of the phenomena and, in general, of experience. That is why the category of truth taken in a rigorous sense does not apply to philosophy's statements.     

Breast cancer: The intention to have a mammography and a clinical breast examination - application of the theory of planned behavior

Abstract

The purpose of these cross sectional studies was to identify the psychosocial factors explaining women's intention to have a mammography within the next two years and their intention to have a clinical breast examination (CBE) by a professional within the next year. Two random samples of women aged 40–69 years (n_a = 354, n_b = 344) completed a self-administered questionnaire that investigated theoretical constructs of the theory of planned behavior. The results of structural equation modeling showed that subjective norms and perceived behavioral control explained 81 % of the variance in intention of having a mammography. Sixty-five percent (65%) of the variance in intention of having a CBE was explained by attitude and perceived behavioral control. In conclusion, women need to be better informed, have better skills to overcome psychological and physical barriers in performing preventive breast behaviors, and promotion of preventive breast cancer methods should consider people significant for women.     

Symptoms of Posttraumatic Stress Disorder and Social Support Among Children and Adolescents After the 2010 Haitian Earthquake

This study explored the prevalence of posttraumatic stress disorder (PTSD) symptoms related to social support received by the children and adolescents who survived the earthquake on January 12, 2010, in Haiti. A strategy of stratified sampling was used, and 540 children and teenagers were questioned. Questionnaires based on the PTSD Checklist, the Impact of Event Scale-Revised, and the Peritraumatic Distress Inventory, among others, were used and bivariate statistical analyses were carried out. The results showed high rates of complete and partial PTSD symptoms, with higher rates among females, and indicated the need for reinforcing social support as a resilience factor for youth.