Leader evaluations after performance feedback: The role of follower mood

Team and organizational failures can negatively impact leadership perceptions, as followers tend to attribute performance outcomes to leadership. The current study explores how follower mood moderates this effect. In two experiments, the first with students (N = 132) and the second with a sample of the working population (N = 229), we show that performance information has a weaker effect on leadership evaluations when the follower is in a positive mood as compared with a negative mood. In addition, we show that this moderation effect holds for performance information about the team as well as the leader. We discuss how these findings extend the cognitive follower-centric perspective on leadership by acknowledging affective influences and explore several counter-intuitive implications of these findings.     

Grave fraudulence in medical device research: a narrative review of the PIN seeding study for the Pinnacle hip system

In 2001, DePuy, a wholly-owned subsidiary of Johnson & Johnson (J&J/DePuy), initiated a seeding study called the “Multi-center, Prospective, Clinical Evaluation of Pinnacle Acetabular Implants in Total Hip Arthroplasty” (PIN Study). J&J/DePuy designed this study to develop new business opportunities during the launch of their Pinnacle Hip System (PHS) and generate survivorship data for marketing. This article, the first review of a seeding trial for a medical device, examines internal company documents relating to the PIN Study; the analysis herein focuses on the integrity of J&J/DePuy’s research practices in conception, implementation, and analysis. J&J/DePuy violated the study protocol and manipulated data; consented participants in violation of standards protecting human subjects; and did not secure Institutional Review Board approval for all study sites. J&J/DePuy used PIN Study results as the “fundamental selling point” for the PHS. Medical device seeding trials are distinct from previously-documented pharmaceutical seeding trials because companies can profit directly from device sales and because these studies may be the first clinical evaluation of the device (as was the case for the PIN Study). Seeding trials are malleable marketing projects, not rigorous scientific studies. Regulatory bodies, physicians, and others should be vigilant for persuasive marketing accounts disguised as science.     

Do individual investors learn from their mistakes?

Based on recent empirical evidence which suggests that as investors gain experience, their investment performance improves, we hypothesize that the specific mechanism through which experience translates into better investment returns is closely related to learning from investment mistakes. To test our hypotheses, we use an administrative dataset which covers the trading history of 19,487 individual investors. Our results show that underdiversification and the disposition effect do not decline as investors gain experience. However, we find that experience correlates with less portfolio turnover. We conclude that compared to other investment mistakes, it is relatively easy for individuals to identify and avoid costs related to excessive trading activity. When correlating experience with portfolio returns, we find that as investors gain experience, their portfolio returns improve. A comparison of returns before and after accounting for transaction costs reveals that this effect is related to learning from overtrading.     

Reassessing the link between premarital cohabitation and marital instability

Premarital cohabitation has been found to be positively correlated with the likelihood of marital dissolution in the United States. To reassess this link, I estimate proportional hazard models of marital dissolution for first marriages by using pooled data from the 1988, 1995, and 2002 surveys of the National Survey of Family Growth (NSFG). These results suggest that the positive relationship between premarital cohabitation and marital instability has weakened for more recent birth and marriage cohorts. Using multiple marital outcomes for a person to account for one source of unobserved heterogeneity, panel models suggest that cohabitation is not selective of individuals with higher risk of marital dissolution and may be a stabilizing factor for higher-order marriages. Further research with more recent data is needed to assess whether these results are statistical artifacts caused by data weaknesses in the NSFG.     

Risk, complexity, and deviations from expected-value maximization: Results of a lottery choice experiment

Varying several parameters of single-stage lottery choice tasks we investigate the question which features of a decision task lead subjects to deviate from maximizing expected monetary value (EV). Despite small differences in EV between the two lotteries in the choice sets, the subjects on average chose the lottery with the higher EV in every task. Risk avoidance occurs, but not consistently over all tasks. Further results are that subjects prefer less complex lotteries over more complex ones, and that risk matters the more the less complex the decision task is.     

The power of “mapping the territory”. Why economists should become more aware of the performativity of their models

Economics is not simply about representing reality; it is also about shaping it, an approach encapsulated in Donald MacKenzie’s aphorism that economics is best conceived as an “engine, not as a camera” (MacKenzie and Millo (Am J Sociol 109(1):107–145, 2003). The making and application of economic theories and models contribute actively and intentionally towards the making of our social world, by encouraging, guiding and legitimizing actions and decisions, or discouraging others, and by steering them in certain directions. It follows that economists do not simply draw maps of the economic territory within their compass: they are not straightforwardly the cartographers of the economy, and cannot be seen as the disinterested observers that they commonly represent themselves to be, and indeed are often thought of as. Their theoretical work has or aims at practical consequences for the economy, and indeed for society at large, and their interests and influence are thus by no means confined to academia alone. This article calls for a discussion of the ethical responsibilities of economists, and of economics, and challenges the discipline properly to assume those responsibilities; and it concludes by considering the key questions—what makes a ‘good’ economic model; and what criteria should be used to distinguish the good models, and the ‘good ways’ of handling models and their results, from the bad ones. As far as epistemology, the methodology of research programmes and the relation of theory and (social) practice are concerned, the insights of mainly von Hayek (Br J Philos Sci 6(23):209–225, 1955, The pretence of knowledge. Lecture to the memory of Alfred Nobel, 1974; Individualism and economic order, University of Chicago Press, Chicago, pp 33–56, 1980a; Individualism and economic order, University of Chicago Press, Chicago, pp 57–76, 1980b; The theory of complex phenomena. Readings in the philosophy of social science, MIT Press, Cambridge, 1994) and Popper (e.g. The myth of the framework: in defence of science and rationality, Routledge, New York 1994a; Models, instruments, and truth. The status of the rationality principle in the social sciences, pp 154–184, 1994b) provide the background of my discussion of the mentioned issues.     

Is the Relationship Between Pornography Consumption Frequency and Lower Sexual Satisfaction Curvilinear? Results From England and Germany

Several studies using different methods have found that pornography consumption is associated with lower sexual satisfaction. The language used by media-effects scholars in discussions of this association implies an expectation that lowered satisfaction is primarily due to frequent—but not infrequent—consumption. Actual analyses, however, have assumed linearity. Linear analyses presuppose that for each increase in the frequency of pornography consumption there is a correspondingly equivalent decrease in sexual satisfaction. The present brief report explored the possibility that the association is curvilinear. Survey data from two studies of heterosexual adults, one conducted in England and the other in Germany, were employed. Results were parallel in each country and were not moderated by gender. Quadratic analysis indicated a curvilinear relationship, in the form of a predominantly negative, concave downward curve. Simple slope analyses suggested that when the frequency of consumption reaches once a month, sexual satisfaction begins to decrease, and that the magnitude of the decrease becomes larger with each increase in the frequency of consumption. The observational nature of the data employed precludes any causal inferences. However, if an effects perspective was adopted, these results would suggest that low rates of pornography consumption have no impact on sexual satisfaction and that adverse effects initiate only after consumption reaches a certain frequency.     

ARE GOALS AND TOPICS INFLUENCED BY GENDER AND MODALITY IN THE INITIAL MARRIAGE AND FAMILY THERAPY SESSION?

Establishment of a goal is crucial to therapy, but identification of therapeutic goals may be difficult in conjoint therapy because each participant may identify a different problem. We examined the influence of gender on ability to successfully introduce therapeutic topics in marital and family therapy by conducting two studies. The first study evaluates the ability of therapists to identify therapeutic goals that matched goals prioritized by both women and men clients on pretherapy questionnaires. The second study examines the process of initial therapy sessions to see whether gender influences a client's ability to introduce a therapeutic topic. Results suggest that therapeutic topic is influenced by the interaction of gender and treatment modality. Specifically, therapists were better able to match women's pretherapy stated goals in marital therapy than family therapy, men were more successful at introducing topics in family therapy, and women were more successful at introducing topics in marital therapy.     

Regional Mobility Spaces? Visa Waiver Policies and Regional Integration

Visa policies today are a central instrument for filtering wanted and unwanted types of travellers, leading to a hierarchy of mobility rights. While there is evidence of a “global mobility divide”, we still know little about the role of regional integration when it comes to the distribution of mobility rights and the (re)structuring of mobility spaces. Against this background, the article examines the structure of visa relations in different bodies of regional integration (EU, MERCOSUR, ASEAN, ECOWAS, EAC, NAFTA, SADC and SICA). The article compares visa policies in the member states of these institutions in 1969 and 2010 from a social network perspective. While one would generally expect each institution's member states to become more similar with regard to both internal and external mobility regulations, we find that not all regional clusters align their visa policies. Potential explanations for this state of affairs are investigated.