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61.
Johannes Hewig Ralf H. Trippe Holger Hecht Thomas Straube Wolfgang H. R. Miltner 《Journal of Nonverbal Behavior》2008,32(2):67-78
The goal of the present study was to provide first evidence for gender differences in gaze patterns while looking at the body
of men and women. For this purpose participants were exposed to 30 pictures of 15 male and 15 female models in casual clothing.
The individual scan paths were recorded using an eye-tracker. The results show that both male and female observers primarily
gaze at people’s face. Only after this initial face-scan, men look significantly earlier and longer at women’s breasts, while
women look earlier at men’s legs. These observations uncover important aspects of the pattern of the human gaze at others
and particularly reveal important gender differences. 相似文献
62.
Johannes H. Hattingh Osama A. Saleh Lucas C. van?der Merwe Terry J. Walters 《Journal of Combinatorial Optimization》2012,24(3):329-338
The induced path number ??(G) of a graph G is defined as the minimum number of subsets into which the vertex set of G can be partitioned so that each subset induces a graph. A Nordhaus-Gaddum-type result is a (tight) lower or upper bound on the sum (or product) of a parameter of a graph and its complement. If G is a subgraph of H, then the graph H?E(G) is the complement of G relative to H. In this paper, we consider Nordhaus-Gaddum-type results for the parameter ?? when the relative complement is taken with respect to the complete bipartite graph K n,n . 相似文献
63.
Johannes Abeler Steffen Altmann Sebastian Kube Matthias Wibral 《Journal of the European Economic Association》2010,8(6):1299-1324
We study how different payment modes influence the effectiveness of gift exchange as a contract enforcement device. In particular, we analyze how horizontal fairness concerns affect performance and efficiency in an environment characterized by contractual incompleteness. In our experiment, one principal is matched with two agents. The principal pays equal wages in one treatment and can set individual wages in the other. We find that the use of equal wages elicits substantially lower efforts. This is not caused by monetary incentives per se because under both wage schemes it is profit‐maximizing for agents to exert high efforts. The treatment difference instead seems to be driven by the fact that the norm of equity is violated far more frequently in the equal wage treatment. After having suffered from violations of the equity principle, agents withdraw effort. These findings hold even after controlling for the role of intentions, as we show in a third treatment. Our results suggest that adherence to the norm of equity is a necessary prerequisite for successful establishment of gift‐exchange relations. (JEL: J33, D63, M52, C92, J41) 相似文献
64.
We argue that an important determinant of voters' support for economic reform is the strength of family ties. While the “crisis hypothesis” predicts that crises facilitate reform, we show in a political economy model that this relation can break down, and even reverse, when agents take into account the effect of reform on their family members. Applied to southern European countries with strong family ties, the model rationalizes why the extremely high (youth) unemployment following the Great Recession has not led to more substantial labor market reforms. In such countries austerity might block rather than foster additional structural reforms. (JEL D64, D72, J48) 相似文献
65.
Prof. Dr. Johannes Weiß 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2001,53(3):616-617
Ohne Zusammenfassung 相似文献
66.
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68.
Carlos Alós-Ferrer Ðura-Georg Granić Johannes Kern Alexander K. Wagner 《Journal of Risk and Uncertainty》2016,52(1):65-97
This paper sheds new light on the preference reversal phenomenon by analyzing decision times in the choice task. In a first experiment, we replicated the standard reversal pattern and found that choices associated with reversals take significantly longer than non-reversals, and non-reversal choices take longer whenever long-shot lotteries are selected. These results can be explained by a combination of noisy lottery evaluations (imprecise preferences) and an overpricing phenomenon associated with the compatibility hypothesis. The first cause explains the existence of reversals, while the second explains the predominance of a particular type thereof. A second experiment showed that the overpricing phenomenon can be shut down, greatly reducing reversals, by using ranking-based, ordinally-framed evaluation tasks. This experiment also disentangled the two determinants of reversals, because imprecise evaluations still deliver testable predictions on decision times even in the absence of the overpricing phenomenon. Strikingly, when unframed ranking tasks were used, decision times in the choice phase were greatly reduced, even though this phase was identical across treatments. This observation is consistent with psychological insights on conflicting decision processes. 相似文献
69.
Prof. Dr. Johannes Bastian 《Gruppendynamik und Organisationsberatung》2010,41(1):21-37
Working with feedback in schools is often based on the (mis-)understanding that it is a form of teacher assessment carried out by the students. Therefore, this paper starts with demarcating feedback from patterns of expectation and of actions that equate feedback with assessment. It unfolds a concept of feedback which is based on methodically structured discussions, shared responsibility, a dialogue practice and designed working alliances. It reconstructs a practice that avoids assessment and seeks possibilities to support learning processes and lesson development. This concept of working with feedback as a motor for a systematic and collaborative lesson development hasn't been a result of an armchair decision. It is grounded on experiences of teachers in four schools who, for one year, continuously worked with feedback methods in their lessons—not by themselves but collaboratively in a network with other schools and in the context of a scientifically accompanied project. 相似文献
70.
Jan Eckhard Johannes Stauder Daniel Wiese 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2015,67(1):81-109
For the first time, this study provides longitudinal research on regional partner market conditions and trends in Germany. It works with indicators of the partner market that are appropriate to theoretical concepts. Using ministerial regional population data, the study examines several assumptions about how the partner market alternates over the life course and differs between birth cohorts. It describes differences between partner market conditions of the sexes and shows effects on the partner market that derive from changes of the birth rate, from shifts in the prevalence and forms of couple relationships, from the expansion of higher education, and from migration. 相似文献