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Incentivized experiments in which individuals receive monetary rewards according to the outcomes of their decisions are regarded as the gold standard for preference elicitation in experimental economics. These task-related real payments are considered necessary to reveal subjects' "true preferences". Using a systematic, large-sample approach with three subject pools of private investors, professional investors, and students, we test the effect of task-related monetary incentives on risk preferences elicited in four standard experimental tasks. We find no systematic differences in behavior between subjects in the incentivized and non-incentivized regimes. We discuss implications for academic research and for applications in the field.
Dieser Entwurf eines Verhaltenskodex richtet sich an Hochschulen, die mittels Learning Analytics die Qualität des Lernens und Lehrens verbessern wollen. Der Kodex kann als Vorlage zur Erstellung von organisationsspezifischen Verhaltenskodizes dienen. Er sollte an Hochschulen, die Learning Analytics einführen wollen, durch Konsultationen mit allen Interessengruppen überprüft und an die Ziele sowie die bestehende Praxis innerhalb der jeweiligen Hochschulen angepasst werden. Der Kodex wurde auf Grundlage einer Analyse bestehender europäischer Kodizes (Engelfriet, Manderveld & Jeunink, 2017; Westerlaken, Manderveld & Jorna, 2019; Sclater & Bailey, 2015; Open University UK, 2014; University of Edinburgh, 2018) und der in Deutschland geltenden Rechtsgrundlage vom Innovationsforum Trusted Learning Analytics des hessenweiten Projektes „Digital gestütztes Lehren und Lernen in Hessen“ entwickelt.
Animal tracking and biologging devices record large amounts of data on individual movement behaviors in natural environments. In these data, movement ecologists often view unexplained variation around the mean as “noise” when studying patterns at the population level. In the field of behavioral ecology, however, focus has shifted from population means to the biological underpinnings of variation around means. Specifically, behavioral ecologists use repeated measures of individual behavior to partition behavioral variability into intrinsic among-individual variation and reversible behavioral plasticity and to quantify: a) individual variation in behavioral types (i.e. different average behavioral expression), b) individual variation in behavioral plasticity (i.e. different responsiveness of individuals to environmental gradients), c) individual variation in behavioral predictability (i.e. different residual within-individual variability of behavior around the mean), and d) correlations among these components and correlations in suites of behaviors, called ‘behavioral syndromes’. We here suggest that partitioning behavioral variability in animal movements will further the integration of movement ecology with other fields of behavioral ecology. We provide a literature review illustrating that individual differences in movement behaviors are insightful for wildlife and conservation studies and give recommendations regarding the data required for addressing such questions. In the accompanying R tutorial we provide a guide to the statistical approaches quantifying the different aspects of among-individual variation. We use movement data from 35 African elephants and show that elephants differ in a) their average behavior for three common movement behaviors, b) the rate at which they adjusted movement over a temporal gradient, and c) their behavioral predictability (ranging from more to less predictable individuals). Finally, two of the three movement behaviors were correlated into a behavioral syndrome (d), with farther moving individuals having shorter mean residence times. Though not explicitly tested here, individual differences in movement and predictability can affect an individual’s risk to be hunted or poached and could therefore open new avenues for conservation biologists to assess population viability. We hope that this review, tutorial, and worked example will encourage movement ecologists to examine the biology of individual variation in animal movements hidden behind the population mean.
From 1945 to the early 1960s, the US government undertook numerous atomic and hydrogen bomb tests. These full-scale explosions were recorded on film from various angles, and at different speeds. Indeed, it soon became required to obtain images of the very first milli-seconds of the expanding phase of the atomic fireball. Ultrahigh-speed cameras able to produce such images were specifically developed for that purpose. This article explores the different “media-temporalities” that intersect in those images. I focus on the “micro-processes happening on a technical level that are very fast,” and more specifically the ones that go into the “Rapatronic camera” designed by Harold Edgerton (head of the US national defense contractor company EG&G) to record the atomic fireball early formation. The scientific slow-motion films and high-speed photographic images operate at the junction of the micro-scale temporality of the atomic explosions’ early phases, and the macro-scale temporality of the political and ecological implications of these explosions. I argue that these films are the objects and inscriptions of micro-temporalities, macro-history and geological times.
To understand the development of public health in Croatia, there are newer insights into the life and work of John the Baptist Lalangue. John the Baptist Lalangue is most valued for implementation of the imperial law on public health and promotion of midwifery in Croatia during the second half of the 18th century. Lalangue is the author of the first printed medical textbook in Croatian, published in 1776, entitled Medicina ruralis iliti Vrachtva ladanyszka, za potrebochu musev, y sziromakov Horvatczkoga orszaga y okolu nyega, blisnesseh mest, Trattnern, Varaždin. In the same period, Lalangue published the first Croatian midwifery textbook entitled Brevis institute de reobstetritia iliti kratek navuk od mestrie pupkorezne za potrebochu muskeh y sziromaskeh ladanovskaya horvatskoga orszaga y okolo nyega blisnesseh sztrankih, Trattnern, Zagreb. In 1779, Lalangue published his balneological debut in Croatian, the book Tractatus de aquis medicati Regnorum Croatiae et Slavoniae Iliti Izpiszavanye vrachtvenih vod Horvatzkoga y Slavonskoga orszaga y od nachina nye vsivati za potrebochu lyudih, Trattnern, Zagreb. Lalangue’s works were used in systematic training and education of midwives and they, as well as Lalangue, have an inevitable place in the history of Croatian midwifery. During his life and work, John the Baptist Lalangue made immeasurable contribution to the development of Croatian public health.