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31.
A class of multidimensional scaling models are developed wherein certain parameters may be fixed as known constants, or proportional to one another. Traditional multidimensional scaling can be obtained as a special case by fixing only the orientation and origin of a configuration. Methods of obtaining least-square estimates of the parameters via nonlinear programming are discussed, and an effective computer program is developed to implement application of the models to data. Several well-known data sets are reanalyzed under various restricted models, and the results demonstrate the possibility of achieving insight not attainable under the traditional approach. The potential distortion arising from inadequate model specification is discussed, and the importance of substantive theory to multidimensional scaling research is emphasized. 相似文献
32.
W. Randolph Ford Alphonse Chapanis Gerald D. Weeks 《Journal of psycholinguistic research》1979,8(5):451-475
Subjects using oral modes of communication generate far more verbiage than do subjects using handwittenn or typewritten modes to solve the same problems. This study tested two alternative hypotheses to account for this disparity: (1) written modes produce a hard copy of interchanges, thereby compensating for the limitations of short-term memory and reducing the need to repeat information, and (2) talking is so easy that there is no incentive to be concise in oral modes. Two-person teams solved problems either by voice or by teletypewriter. Half the teams were given a monetary incentive to use as few words as possible. No such request was made of the control teams. Subjects in the brevity condition, regardless of the communication mode, greatly reduced verbiage with no increase in time or decrease in accuracy. Moreover, subjects in the brevity-voice condition used even fewer words than did subjects in the control-teletypewriter condition. These results, then, lend weight to the second hypothesis. 相似文献
33.
34.
Justin W. Weeks Akanksha Srivastav Ashley N. Howell Andrew R. Menatti 《Journal of psychopathology and behavioral assessment》2016,38(1):30-41
The relationship between vocal pitch and social anxiety has been examined with encouraging results across a growing number of studies, highlighting increased fundamental frequency (F0) as a potential disorder-specific physiological marker of social anxiety. The purpose of the present study was to examine the relationship between mean F0 emitted during diagnostic interviews and social anxiety disorder (SAD) symptoms. Patients who qualified for a diagnosis of SAD (n?=?26) and a subsample of demographically-matched healthy controls (HCs; n?=?12) were administered clinical diagnostic interviews. We examined mean F0 emitted during select segments of the diagnostic interviews utilizing specialized vocal analysis equipment. Men (but not women) who qualified for a diagnosis of SAD emitted greater overall mean F0 in comparison to HCs throughout the course of the diagnostic interviews, and mean F0 emitted during the introductory segment of the diagnostic interviews was positively related to SAD symptoms for men (but not women). Furthermore, a previously-established threshold of mean F0 which demonstrated excellent differentiation between men with SAD and controls was successfully replicated in the present design, with regard to F0 emitted during the introductory segment of the interviews. These results provide strong additional support for increased F0 as a physiological indicator and behavioral marker of SAD in samples of men. Implications for the assessment and treatment of SAD are discussed. 相似文献
35.
Ashley N. Howell Devin A. Zibulsky Akanksha Srivastav Justin W. Weeks 《Cognitive behaviour therapy》2016,45(2):111-122
There is building evidence that highly socially anxious (HSA) individuals frequently avoid making eye contact, which may contribute to less meaningful social interactions and maintenance of social anxiety symptoms. However, research to date is lacking in ecological validity due to the usage of either static or pre-recorded facial stimuli or subjective coding of eye contact. The current study examined the relationships among trait social anxiety, eye contact avoidance, state anxiety, and participants’ self-perceptions of interaction performance during a live, four-minute conversation with a confederate via webcam, and while being covertly eye-tracked. Participants included undergraduate women who conversed with same-sex confederates. Results indicated that trait social anxiety was inversely related to eye contact duration and frequency averaged across the four minutes, and positively related to state social anxiety and negative self-ratings. In addition, greater anticipatory state anxiety was associated with reduced eye contact throughout the first minute of the conversation. Eye contact was not related to post-task state anxiety or self-perception of poor performance; although, trends emerged in which these relations may be positive for HSA individuals. The current findings provide enhanced support for the notion that eye contact avoidance is an important feature of social anxiety. 相似文献
36.
Andrea L. Patalano Katherine Williams Gillian Weeks Kelsey Kayton Hilary Barth 《决策行为杂志》2022,35(1):e2247
A left digit effect has been broadly observed across judgment and decision-making contexts ranging from product evaluation to medical treatment decisions to number line estimation. For example, $3.00 is judged to be a much greater cost than $2.99, and “801” is estimated strikingly too far to the right of “798” on a number line. Although the consequences of the effects for judgment and decision behavior have been documented, the sources of the effects are not well established. The goal of the current work is to extend investigations of the left digit effect to a new complex judgment activity and to assess whether the magnitude of the effect at the individual level can be predicted from performance on a simpler number skills task on which the left digit effect has also recently been observed. In three experiments (N = 434), adults completed a judgment task in which they rated the strength of hypothetical applicants for college admission and a self-paced number line estimation task. In all experiments, a small or medium left digit effect was found in the college admissions task, and a large effect was found in number line estimation. Individual-level variation was observed, but there was no relationship between the magnitudes of the effects in the two tasks. These findings provide evidence of a left digit effect in a novel multiattribute judgment task but offer no evidence that such performance can be predicted from a simple number skills task such as number line estimation. 相似文献
37.
Rodebaugh TL Weeks JW Gordon EA Langer JK Heimberg RG 《Anxiety, stress, and coping》2012,25(2):167-182
Available research suggests that fear of negative evaluation and fear of positive evaluation are related but distinct constructs that each contribute to social anxiety, implying a need to focus on these fears in treatment. Yet, this research is almost entirely based on cross-sectional data. We examined the longitudinal relationship between fears of positive and negative evaluation over three time points in a sample of undergraduate students. We tested competing models consistent with two basic positions regarding these fears: (1) that fear of positive evaluation only appears to affect social anxiety because it arises from the same, single underlying trait as fear of negative evaluation, and (2) fears of positive and negative evaluation are correlated, but clearly distinct, constructs. The best-fitting model was an autoregressive latent-trajectory model in which each type of fear had a separate trait-like component. The correlation between these trait-like components appeared to fully account for the relationships between these constructs over time. This investigation adds to the evidence in support of the second position described above: fear of positive evaluation is best interpreted as a separate construct from fear of negative evaluation. 相似文献
38.
Criminologists have paid less attention to white‐collar than to street crime, to victims than to offenders, and to women than to men, either as victims or as offenders. In fact, we have been unable to locate even a single study that focuses specifically on women as victims of corporate crime. We present several case studies that indicate that women are indeed often victimized by corporate activities. We argue that research on this topic is both necessary and timely. Feminist analysis may explain why little attention has been paid to this issue so far and also provides a theoretical framework for future research. 相似文献
39.
Using Participatory System Dynamics Modeling to Examine the Local HIV Test and Treatment Care Continuum in Order to Reduce Community Viral Load
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Margaret R. Weeks Jianghong Li David Lounsbury Helena Danielle Green Maryann Abbott Marcie Berman Lucy Rohena Rosely Gonzalez Shawn Lang Heather Mosher 《American journal of community psychology》2017,60(3-4):584-598
Achieving community‐level goals to eliminate the HIV epidemic requires coordinated efforts through community consortia with a common purpose to examine and critique their own HIV testing and treatment (T&T) care system and build effective tools to guide their efforts to improve it. Participatory system dynamics (SD) modeling offers conceptual, methodological, and analytical tools to engage diverse stakeholders in systems conceptualization and visual mapping of dynamics that undermine community‐level health outcomes and identify those that can be leveraged for systems improvement. We recruited and engaged a 25‐member multi‐stakeholder Task Force, whose members provide or utilize HIV‐related services, to participate in SD modeling to examine and address problems of their local HIV T&T service system. Findings from the iterative model building sessions indicated Task Force members’ increasingly complex understanding of the local HIV care system and demonstrated their improved capacity to visualize and critique multiple models of the HIV T&T service system and identify areas of potential leverage. Findings also showed members’ enhanced communication and consensus in seeking deeper systems understanding and options for solutions. We discuss implications of using these visual SD models for subsequent simulation modeling of the T&T system and for other community applications to improve system effectiveness. 相似文献
40.
Andrew M. Busch Glenn M. Callaghan Jonathan W. Kanter David E. Baruch Cristal Weeks 《Journal of Contemporary Psychotherapy》2010,40(1):11-19
Few theories of psychotherapy give direction to the therapist on a moment-to-moment level or make predictions about how specific
therapist techniques change client behavior in session. Functional analytic psychotherapy (FAP, Kohlenberg and Tsai in Functional
analytic psychotherapy: a guide for creating intense and curative therapeutic relationships. Plenum, New York 1991) provides this direction and prediction. Specifically, FAP claims that client problem behaviors will be displayed in the
therapeutic relationship and that the therapist can improve client in-session behavior through differential, contingent responding.
Further, it is assumed that these improvements in session can be generalized to out of session relationships. The FAP rating
scale (FAPRS) was developed for the purpose of coding in-session client and therapist behaviors in an effort to test FAP’s
purported mechanism of change. The current study seeks to replicate and extend initial FAPRS findings (Callaghan et al. in
J Contemp Psychother 33:321–339, 2003) regarding mechanism of change and to address transportability. FAPRS coding data from a single successful case of an individual
diagnosed with Borderline Personality Disorder and treated with FAP is presented. Results indicate that the FAPRS system is
transportable and are generally supportive of the claim that therapist contingent responding leads to client improvement. 相似文献