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51.
A scalar product model for the multidimensional scaling of choice   总被引:1,自引:0,他引:1  
A multidimensional scaling analysis is presented for replicated layouts of pairwise choice responses. In most applications the replicates will represent individuals who respond to all pairs in some set of objects. The replicates and the objects are scaled in a joint space by means of an inner product model which assigns weights to each of the dimensions of the space. Least squares estimates of the replicates' and objects' coordinates, and of unscalability parameters, are obtained through a manipulation of the error sum of squares for fitting the model. The solution involves the reduction of a three-way least squares problem to two subproblems, one trivial and the other solvable by classical least squares matrix factorization. The analytic technique is illustrated with political preference data and is contrasted with multidimensional unfolding in the domain of preferential choice.The present work was initiated at Oregon Research Institute under National Institute of Mental Health Grant MH 12972. It was reformulated and completed while the first author was a Visiting Research Fellow at Educational Testing Service.Presently at the Department of Mathematics, University of Toronto.  相似文献   
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The fundamental factor theorem is developed in matrix form for the case of correlated factors. The properties of the correlated factor system are discussed, and some effects of sampling error considered. The psychological meaning of correlated factors is discussed, and several mechanisms by which general factors may operate in the factorial system are indicated.  相似文献   
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The sequential lineup is multifaceted, including serial presentation of faces, multiple decisions, and often backloading (indicating to an eyewitness that a lineup contains more photos than there actually are). We evaluated the effect of backloading instructions on response bias and sensitivity with an eyewitness identification paradigm. Importantly, we included an ‘undisclosed’ condition that provided no information to participants about the number of lineup members to expect. Experiment 1 (N = 780) tested sequential lineups; Experiment 2 (N = 532) tested simultaneous lineups. As predicted, signal detection analysis showed that backloading induced participants to be more conservative in choosing from both lineup types, but did not affect d′. We conclude that the criminal justice system should be mindful of this shift in response bias, as it has implications for both guilty and innocent suspect identifications. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
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The ability of parties to not only reflect, but actually shape, citizens' preferences on policy issues has been long debated, as it corresponds to a fundamental prediction of classic party identification theory. While most research draws on data from the United States or studies of low-salience issues, we exploit the unique opportunity presented by the 2013 Italian election, with the four major parties of a clear multiparty setting holding distinct positions on crucial issues of the campaign. Based on an experimental design, we test the impact of party cues on citizens' preferences on high-salience issues. The results are surprising: Despite a party system in flux (with relevant new parties) and a weakening of traditional party identities, we find large, significant partisan-cueing effects in all the three experimental issues, and for voters of all the major Italian parties—both old and new, governmental and opposition, ideologically clear or ambiguous.  相似文献   
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Abstract

Unlike previous scholarship that asserted that in places where Jewish and gentile identities conflicted, Jewish traditions and practices had to give way to gentile ones, Campbell’s work sets forth the proposition that Paul envisioned side-by-side, diverse identities expressing themselves in unity. Thus, in Campbell’s reading Paul made room for missional activity to both Jews and gentiles, affirming Peter’s work as well as his own. Furthermore, Campbell shifted the conversation from an opposition between Jews and gentiles in the early church to the challenges of forming early Christ-followers’ identity in the face of the pervasive influence of the Roman empire. Although Campbell’s emphasis on Paul’s Jewish identity seems to place him among the New Perspective on Paul scholars, he recognises that Paul’s own identity was not his primary focus in his letters – the in-Christ gentile identities of the new communities was. This emphasis of Campbell’s work moves him beyond the less nuanced approaches of scholars such as Sanders and Dunn. A significant part of Campbell’s work has been to discuss the relationship between Israel and the emerging Christ movement. He concludes that neither Jewish nor gentile identities are obliterated, nor is gentile Christianity absorbed into or a replacement for Israel. Instead, gentile Christ followers are accepted into God’s people as gentiles, alongside Jews and Jewish Christ followers. William Campbell has been instrumental both within the Paul within Judaism movement, but also in pushing for nuanced and innovative developments stemming from that body of work. His past work commands respect and his future work is highly anticipated.  相似文献   
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One of the major obstacles to seeking psychological help is the stigma associated with counseling and therapy. Self-stigma, the fear of losing self-respect or self-esteem as a result of seeking help, is an important factor in the help-seeking process. In the present study, college students meeting a clinical cutoff for psychological symptoms participated in 1 session of group counseling that either contained therapist self-disclosure or did not. In general, participants reported significantly less self-stigma following the session. Working alliance-bond and session depth significantly predicted the change in self-stigma. Furthermore, self-stigma (as well as bond, depth, psychological symptoms, and being female) predicted the intention to seek help following the session. Self-stigma and session depth also predicted interest in continuing with counseling. The therapist self-disclosure condition, however, had no effect on the change in self-stigma, intentions to seek help, or interest in continuing with group counseling.  相似文献   
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The elderly are known to exhibit declines in postural control during standing and walking, however little is known about how the elderly react under time-critical and challenging postural situations. The purpose of this study was to examine age-related differences in reaction time (RT) and the pattern of temporal coordination between center of pressure (COP), trunk and head motion during voluntary postural sway movements. Healthy young (n=10; mean=24 years; SD=5 years) and elderly men (n=8; mean=75 years; SD=2 years) stood on a force plate with tri-axial accelerometers attached to the head and lower trunk. Participants were required to generate sway in the anterior-posterior (AP) or medial-lateral (ML) direction in response to an auditory cue during two different testing conditions called Static reaction and Dynamic reaction. Static reactions involved the initiation of voluntary sway in either the AP or ML direction from quiet stance. Dynamic reactions involved an orthogonal switch of voluntary sway between the AP and ML directions. Compared to the young, elderly individuals exhibited slower RT during both Static and Dynamic reaction, and smaller differences in RT and phasing between COP, trunk, and head motion. The results of this study suggest that the elderly adopted more rigid coordination strategies compared to the young when executing a rapid change in direction of whole body motion. The rigid movement strategy of the elderly was presumably generated in an effort to compensate for increased challenge to the maintenance of stability.  相似文献   
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