The Causal Structure of Evolutionary Theory

One contentious debate in the philosophy of biology is that between the statisticalists and causalists. The former understand core evolutionary concepts like fitness and selection to be mere statistical summaries of underlying causal processes. In this view, evolutionary changes cannot be causally explained by selection or fitness. The causalist side, on the other hand, holds that populations can change in response to selection—one can cite fitness differences or driftability in causal explanations of evolutionary change. But, on the causalist side, it is often not clear how, precisely, one should understand these causes. Thus, much more could be said about what sort of causes fitness and driftability are. In this paper, I borrow Dretske's distinction between structuring and triggering causes and I suggest that fitness and driftability are structuring causes of evolution.     

The effect of true and false feedback on blushing in women

The effect of true and false feedback of facial blood flow on blushing and embarrassment was investigated in high (n=24) and low (n=24) scorers on the Blushing Propensity Scale. Feedback was given while the participants sang and read aloud. Blushing while singing habituated rapidly in both groups and was not affected by true feedback. Blushing still developed in high scorers when given false-negative feedback of blushing when they first sang, whereas low scorers did not blush. False-positive feedback of blushing while reading aloud increased embarrassment, but facial blood flow decreased. High scorers gave higher ratings for embarrassment and blushing than low scorers during most of the tasks. The findings suggest that people who think that they are prone to blushing feel more self-conscious but generally do not blush more intensely or frequently than people with low blushing propensity scores during clearly embarrassing or innocuous social encounters. However, expecting to blush might actually increase the likelihood of embarrassment and blushing in potentially embarrassing situations.     

大学生信任倾向对社会适应的影响

本研究通过对129名大学生的信任倾向和社会适应的研究,考察了大学生的信任倾向对社会适应的影响。研究结果显示,信任倾向与社会适应的各个指标之间显著相关,即信任倾向越高,个体的人际适应、自我适应与情绪适应就越好。而且信任倾向能够直接预测自我适应,并通过自我适应的中介间接影响人际适应和情绪适应。     

信任倾向和面孔可信度对小学儿童信任判断的影响

该研究考察了7、9、11岁小学儿童对陌生人信任判断的发展特点,以及信任方的信任倾向和被信任方的面孔可信度在儿童信任判断中的作用特点及其发展特征。结果发现：（1）7、9、11岁小学儿童基于面孔对陌生他人进行的信任判断中,9、11岁儿童的信任水平要高于7岁儿童;（2）在信任判断中,陌生交往者的面孔可信度对7、9和11岁儿童的信任判断都具有显著的影响作用,即相对于具有不可信面孔的陌生人,儿童更愿意相信具有可信面孔的陌生人;此外,信任倾向对于信任判断的影响作用则存在一定的年龄间差异,7岁儿童的信任倾向对信任判断无影响,9和11岁儿童的信任倾向正向预测儿童对陌生人的信任水平,即相对于信任倾向低的儿童,信任倾向高的儿童对陌生人的信任水平也越高;（3）被信任方的面孔可信度在小学儿童信任判断中的影响作用要大于儿童自身的信任倾向的影响作用。这些结果表明儿童对他人的信任水平随着年龄的增长而提高;对于陌生人,小学儿童主要依据被信任方相关的可信特征线索做出相应的信任判断。     

Revisiting the factor structure of the 12-item Disgust Propensity and Sensitivity Scale – Revised: Evidence for a third component

The 12-item Disgust Propensity and Sensitivity Scale – Revised (DPSS-12) is widely used to assess the tendency for an individual to respond with disgust (i.e., disgust propensity) and how bothered an individual is by the experience of disgust (i.e., disgust sensitivity). However, heterogeneous items included in the DPSS-12 call into question the adequacy of its two-factor structure. The current study examined the factor structure of the DPSS-12 using two large, nonclinical student samples. Exploratory factor analyses revealed three lower order factors: (1) disgust propensity, (2) disgust sensitivity, and (3) self-focused/ruminative disgust. Confirmatory factor analyses supported the three-factor solution and demonstrated that the model fit better than a unidimensional or two-factor model. Further, a modified two-factor model that excluded the third factor provided a better fit than the original two-factor model. Additionally, the third domain explained a significant portion of the total variance, and evidenced a distinctive pattern of association with relevant constructs including obsessional symptoms. These data suggest the need to refine our knowledge about the latent structure of disgust reflected by this measure.     

Finding the Lost Sheep: A Panel Study of Business Students' Intrinsic Religiosity,Machiavellianism, and Unethical Behavior Intentions

This research investigates 266 business students' panel data across 4 time periods and tests a theoretical model involving intrinsic religiosity, the love of money (Time 1), Machiavellianism (Time 2), and propensity to engage in unethical behaviors (PUB; Times 3 and 4). There was a short ethics intervention between Times 3 and 4. We identified good apples and bad apples using the PUB measure collected at Time 4. From Time 3 to Time 4, good apples became more ethical, whereas bad apples became less ethical after the ethics intervention. Moreover, for the whole sample, intrinsic religiosity deterred unethical intentions not only directly but also indirectly through the absence of Machiavellianism. Before the ethics intervention, intrinsic religiosity curbed unethical intention directly for good apples but indirectly for bad apples. After the intervention, only the indirect effect was significant for bad apples. Intrinsic religiosity offers us hope to open the hearts of the lost sheep and bring them home. Research results were discussed in light of this study's theoretical, empirical, and practical contributions; Judeo-Christian ethics and values; challenging roles of educators and executives in educating Gen-Yers; creating a sea change of the ethical social norm in schools, organizations, and society, or ethical community building, and promoting ethical behavior; and future directions for research.     

Experiential Marketing and Marketing Experience: An Empirical Study of the Influence of Summer Boot Camp on Military Propensity

The purpose of this study was to examine how experiential marketing may influence military propensity via the Summer Boot Camp (SBC), a 5-day quasi–training camp for high school and college students run by the Taiwan military. A survey of 1,102 participants was conducted using questionnaires. The findings indicate that a satisfactory SBC experience leads to a higher degree of perceived experiential value, which in turn triggers favorable behavioral intentions regarding the military in terms of supporting national defense, recommending the SBC to relatives and friends, and visiting regional recruiting centers. Further, perceived experiential value plays an important mediator role for experiencing a military propensity by exerting a significant indirect influence. However, the influence resulting from a good experience and value is not sufficient to motivate participants to actually go to enlist. Implications for recruiting efforts are discussed in terms of designing effective experience marketing.     

The relationship between blushing propensity,social anxiety and facial blood flow during embarrassment

To investigate blushing in relation to blushing propensity scores and core elements of social anxiety, facial blood flow was monitored in 86 normal volunteers during an embarrassing task (singing a children's song). Increases in facial blood flow were greater in women than men, as were scores on the Blushing Propensity and Fear of Negative Evaluation scales. In addition, high scores on the Blushing Propensity and Social Interaction Anxiety scales were associated with large increases in facial blood flow during singing. However, this appeared to be due primarily to social anxiety because the association between blushing propensity scores and changes in facial blood flow disappeared when social interaction anxiety scores were taken into account. These findings suggest that people generally base their beliefs about blushing on cues other than changes in facial blood flow. Social anxiety may augment increases in facial blood flow during embarrassment, independently of expected or perceived blushing.     

Causal inferences with group based trajectory models

A central theme of research on human development and psychopathology is whether a therapeutic intervention or a turning-point event, such as a family break-up, alters the trajectory of the behavior under study. This paper lays out and applies a method for using observational longitudinal data to make more confident causal inferences about the impact of such events on developmental trajectories. The method draws upon two distinct lines of research: work on the use of finite mixture modeling to analyze developmental trajectories and work on propensity scores. The essence of the method is to use the posterior probabilities of trajectory group membership from a finite mixture modeling framework, to create balance on lagged outcomes and other covariates established prior to t for the purpose of inferring the impact of first-time treatment at t on the outcome of interest. The approach is demonstrated with an analysis of the impact of gang membership on violent delinquency based on data from a large longitudinal study conducted in Montreal. The research has been supported by the National Science Foundation (NSF) (SES-99113700) and the National Institute of Mental Health (RO1 MH65611-01A2). It also made heavy use of data collected with the support from Québec’s CQRS and FCAR funding agencies, Canada’s NHRDP and SSHRC funding agencies, and the Molson Foundation. We thank Stephen Fienberg, Susan Murphy, Paul Rosenbaum, the editor, Paul De Boeck, and two anonymous reviewers for their insightful suggestions.     

Do blushing phobics overestimate the undesirable communicative effects of their blushing?

Previous research indicated that blushing has socially threatening revealing effects in ambiguous situations. To explain blushing phobics' fearful preoccupation with blushing, we tested the hypothesis that blushing fearful individuals overestimate its revealing effects. High (n = 20) and low (n = 20) blushing fearful individuals read vignettes describing prototypical mishaps and ambiguous social events. Participants were prompted in the perspective of the actor, and were asked to indicate their expectations of the observers' judgments (meta-perceptions). Blushing fearful individuals overestimated the probability and the costs of undesirable outcomes. However, this judgmental bias was not inflated by displaying a blush. Thus, the results provide no evidence to support the idea that fear of blushing is fuelled by a biased conception of its communicative effects.