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1.
Gustavo A. Reyes del Paso 《Behavior research methods》1992,24(3):464-466
A variety of evidence shows that the amplitude of respiratory sinus arrhythmia (RSA)—the peak-to-peak variations in heart rate caused by respiration—is a valid and reliable index of para-sympathetic cardiac control. An on-line program to calculate RSA amplitude on a breath-by-breath basis is described. The validity of the RSA amplitude values obtained through the computer pro-gram were tested in two studies. From the first one, the correlations between RSA amplitude and a set of cardiorespiratory variables, under both rest and auditory stimulation conditions, are reported. In the second study, the effect of atropine administration on the RSA amplitude, under both rest and mental load conditions, was examined. The results of both studies are con-gruent with predictions and suggest the usefulness of the software. 相似文献
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9 obese and 9 normal subjects performed a psychophysical task in which food- or non-food-related stimuli were briefly flashed tachistoscopically at a speed and intensity near the visual threshold. A signal was presented on one-half the trials and noise only on the other one-half of the trials. Using signal detection theory methodology, separate measures of sensory sensitivity (d') and response bias (beta) were calculated. No differences were noted between obese and normal subjects on measures of sensory sensitivity but significant differences on response bias. Obese subjects had consistently lower response criteria than normal ones. Analysis for subjects categorized by whether they were restrained or unrestrained eaters gave findings identical to those for obese and normal. The importance of using a methodology that separates sensory and non-sensory factors in research on obesity is discussed. 相似文献
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Andrew R. Davidson James J. Jaccard Harry C. Triandis Maria Luisa Morales Rogelio Diaz-Guerrero 《International journal of psychology》1976,11(1):1-13
A model for the prediction of behavior from attitudinal components, developed by Triandis, was tested with samples of U.S. and Mexican women, and with fertility relevant behaviors. The elements of the model are etic, but the operationalizations of the various variables were done emically. Results support the model in both cultures. While the predictive utility of the model is equivalent in two cultures, there are social class differences on which component of the model is most emphasized. The U.S. upper-middle-class sample and the Mexican upper-middle-class sample emphasized the person's attitude toward the act, while the Mexican lower SES (socio-economic status) sample emphasized the person's normative beliefs (moral obligations). 相似文献
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This paper presents two experiments on nutrient-based flavor conditioning with rats as subjects and sucrose as the unconditioned stimulus (US). Experiment 1 was aimed at establishing an optimal control for conditioning, comparing simultaneous and serial presentations of a flavor and the US. The results showed that simultaneous, but not serial training, produced conditioning. Experiment 2 was designed to obtain evidence of summation as an index of both conditioned inhibition and predictive learning. Group Simultaneous received Pavlovian conditioned inhibition training during which flavor A was simultaneously paired with sucrose on excitatory trials (A+), and forming an unreinforced compound with flavor B on inhibitory trials (AB-). An independent excitor for the summation test was also trained by simultaneous pairings with sucrose (C+). In the control group (Blocked), the AB- trials were presented forming a block at the beginning of training to avoid a negative contingency-relationship with sucrose, and flavor A received serial rather than simultaneous pairing with sucrose (A --> +). On the summation test, only in group Simultaneous was consumption of the CB compound lower than that of flavor C alone, suggesting that, during training, flavor A activated an expectancy of the US occurrence. 相似文献
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Lauren M. Keeley Bridget A. Makol Noor Qasmieh Danielle E. Deros Jeremy N. Karp Melanie F. Lipton Tara M. Augenstein Michelle L. Truong Sarah J. Racz Andres De Los Reyes 《Journal of child and family studies》2018,27(4):1041-1053
Adolescents experiencing social anxiety often experience co-occurring attention-deficit/hyperactivity disorder (ADHD) symptoms. Yet, assessing for social anxiety poses challenges given the already time-consuming task of distinguishing social anxiety from other commonly co-occurring internalizing conditions (e.g., generalized anxiety, major depression). Assessors need short screening devices to identify socially anxious adolescents in need of intensive ADHD assessments. A six-item version of the ADHD Self-Report Scale (ASRS-6) was originally developed to identify adults who likely meet diagnostic criteria for ADHD, but its psychometric properties have yet to be examined among adolescents. We tested the psychometric properties of the ASRS-6 when administered in clinical assessments for adolescent social anxiety. Eighty-nine 14–15 year old adolescents and their parents (67.4% female; 62.1% African American; 30 Clinic-Referred; 59 Community Control) completed the ASRS-6, measures of adolescent social anxiety and depressive symptoms, and parent-adolescent conflict. Adolescent self-reported and parent-reported ASRS-6 positively related with scores from established measures of social anxiety, depressive symptoms, and parent-adolescent conflict. Further, adolescent self-reported (but not parent-reported) ASRS-6 scores significantly discriminated adolescents on referral status. Adolescent self-reported (but not parent-reported) ASRS-6 scores incrementally predicted social anxiety over-and-above depressive symptoms, which commonly co-occur with social anxiety. Conversely, parent-reported (but not adolescent self-reported) ASRS-6 scores incrementally predicted parent-adolescent conflict over-and-above depressive symptoms, which commonly co-occur with conflict. When assessing adolescent ADHD symptoms, adolescents’ and parents’ reports meaningfully vary in their links to validity indicators. As such, among adolescents assessed for social anxiety, clinical assessments of adolescent ADHD symptoms should include both parent reports and adolescent self-reports. 相似文献
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Leticia Bravo Reyes Cristina Núñez Madrazo E. Vargas-Madrazo 《World Futures: Journal of General Evolution》2018,74(4):212-223
The history of organizations and collectives is something alive. It is a network of memories, actions, collaborations, dreams, encounters, and disconnections that live within each of its members. The EcoDialogue Center is an academic space of the University of Veracruz for promoting dialogue between disciplines. In this article we are presenting the stories, both personal and collective, and the values and ideals that create our Center. We are using this opportunity to reflect on the cultural, geographical, emotional, intellectual, and societal conditions that have allowed this innovative process within the rules and customs of a university. 相似文献
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