Is the warm glow actually warm? An experimental investigation into the nature and determinants of warm glow feelings

  Giving money to others feels good. In the past years, this claim has received strong empirical support from psychology and neuroscience. It is now standard to use the label ‘warm glow feelings’ to refer to the pleasure people take from giving, and many explanations of apparently altruistic behavior appeal to these internal rewards. But what exactly are warm glow feelings? Why do people experience them? In order to further our understanding of the phenomenon, we ran two studies: a recall task in which participants were asked to remember a donation they made, and a donation task in which participants were given the opportunity to make a donation before reporting their affective states. In both studies, correlational and experimental evidence converge towards the conclusion that, if the nature of the warm glow is straightforward, its source is multifaceted. Regarding the nature of ‘warm glow’, the pleasure people took in giving was mainly predicted by one particular positive emotion (‘joyful feelings’) and was indeed described by participants as a ‘warm’ sensation. Regarding the underlying psychological mechanisms, ‘warm glow’ feelings were elicited both by positive appraisals regarding the donor’s moral character and positive appraisals regarding the actual impact of the donor’s donation on the welfare of others. We discuss the implications of these findings for the role of positive emotions in explaining why people give. Keywords : Warm glow; Charity; Donation; Giving; Prosocial spending; Emotion

Is the warm glow actually warm?: an experimental investigation into the nature and determinants of warm glow feelings

Giving money to others feels good. In the past years, this claim has received strong empirical support from psychology and neuroscience. It is now standard to use the label ‘warm glow feelings’ to refer to the pleasure people take from giving, and many explanations of apparently altruistic behavior appeal to these internal rewards. But what exactly are warm glow feelings? Why do people experience them? In order to further our understanding of the phenomenon, we ran two studies: a recall task in which participants were asked to remember a donation they made, and a donation task in which participants were given the opportunity to make a donation before reporting their affective states. In both studies, correlational and experimental evidence converge towards the conclusion that, if the nature of the warm glow is straightforward, its source is multifaceted. Regarding the nature of ‘warm glow’, the pleasure people took in giving was mainly predicted by one particular positive emotion (‘joyful feelings’) and was indeed described by participants as a ‘warm’ sensation. Regarding the underlying psychological mechanisms, ‘warm glow’ feelings were elicited both by positive appraisals regarding the donor’s moral character and positive appraisals regarding the actual impact of the donor’s donation on the welfare of others. We discuss the implications of these findings for the role of positive emotions in explaining why people give

Causalité agentive (A)

Considérez les énoncés suivants : « La bombe a causé la destruction du pont » ; « L’explosion de la bombe a causé la destruction du pont » ; « Booth a causé la mort de Lincoln » ; et « Le tir de Booth a causé la mort de Lincoln ». Ces énoncés suggèrent que les objets, tels que les bombes ou les personnes, font partie de la catégorie ontologique des causes, au même titre que les évènements, comme le tir de Booth et l’explosion de la bombe. À première vue, le fait que les objets et les personnes puissent être des causes n’a rien de particulièrement surprenant. Cependant, les philosophes du XXe siècle ont fait preuve d’une extrême méfiance à l’égard de cette idée. Une majorité de philosophes ont trouvé l’idée même de causalité par des objets ou des agents inintelligible, à tel point que les théories standards de la causalité présupposent que les entités reliées comme causes à effets sont des évènements, ou encore des faits, des propriétés ou des états. Pourtant, cette hostilité à l’égard de la causalité des objets est relativement récente ; la causalité agentive semble, au moins jusqu’à Thomas Reid (1710-1796), avoir été la norme, et non le mystère. La mise à l’écart des objets et des agents de la catégorie de cause est-elle justifiée ? Un nombre grandissant de philosophes, les agentialistes (agent-causalists), soutiennent que non et cherchent à réhabiliter l’idée de causalité agentive (par des agents) et/ou substantielle (par des substances), tandis que d’autres, les évènementialistes (event-causalists), défendent que celle-ci est au mieux réductible à la causalité entre évènements, ou au pire que l’idée est incohérente. L’importance de cette question n’est pas négligeable, car elle revient à demander quels sont les moteurs du changement. En effet, nous voulons savoir si certains objets tels que les couteaux, les bombes, les animaux et les personnes sont parfois à l’origine du changement, ou si tout effet procède uniquement de changements antérieurs, d’évènements. Existe-t-il une relation causale, la causalité agentive ou substantielle, reliant objets et changements, différente des relations causales habituellement traitées par les philosophes de la causalité ? Quelle est sa relation avec la causalité évènementielle ? Et comment fonctionne-t-elle 

Is the warm glow actually warm? An experimental investigation into the nature and determinants of warm glow feelings

Giving money to others feels good. It is now standard to use the label ‘warm glow feelings’ to refer to the pleasure people take from giving. But what exactly are warm glow feelings? And why do people experience them? To answer these questions, we ran two studies: a recall task in which participants were asked to remember a donation they made, and a donation task in which participants were given the opportunity to make a donation before reporting their affective states. Correlational and experimental results converge towards the conclusion that, if the nature of the warm glow is straightforward, its source is multifaceted. Regarding the nature of the ‘warm glow’, the pleasure people took in giving was mainly predicted by one particular type of positive emotion and was indeed described by participants as ‘warm’. Regarding the underlying psychological mechanisms, warm glow feelings were elicited by positive appraisals regarding the donor’s moral character, positive appraisals regarding the actual impact of the donor’s donation on the welfare of others and a feeling of communion with others. We discuss the theoretical implications of our findings

Measurement of the cross-section and charge asymmetry of WW bosons produced in proton-proton collisions at s=8\sqrt{s}=8 TeV with the ATLAS detector

This paper presents measurements of the $W^+ \rightarrow \mu^+\nu$ and $W^- \rightarrow \mu^-\nu$ cross-sections and the associated charge asymmetry as a function of the absolute pseudorapidity of the decay muon. The data were collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS experiment at the LHC and correspond to a total integrated luminosity of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the 1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured with an uncertainty between 0.002 and 0.003. The results are compared with predictions based on next-to-next-to-leading-order calculations with various parton distribution functions and have the sensitivity to discriminate between them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13

Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector

A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

<i>Gaia</i> Data Release 1. Summary of the astrometric, photometric, and survey properties

Context. At about 1000 days after the launch of Gaia we present the first Gaia data release, Gaia DR1, consisting of astrometry and photometry for over 1 billion sources brighter than magnitude 20.7. Aims. A summary of Gaia DR1 is presented along with illustrations of the scientific quality of the data, followed by a discussion of the limitations due to the preliminary nature of this release. Methods. The raw data collected by Gaia during the first 14 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium (DPAC) and turned into an astrometric and photometric catalogue. Results. Gaia DR1 consists of three components: a primary astrometric data set which contains the positions, parallaxes, and mean proper motions for about 2 million of the brightest stars in common with the HIPPARCOS and Tycho-2 catalogues – a realisation of the Tycho-Gaia Astrometric Solution (TGAS) – and a secondary astrometric data set containing the positions for an additional 1.1 billion sources. The second component is the photometric data set, consisting of mean G-band magnitudes for all sources. The G-band light curves and the characteristics of ∼3000 Cepheid and RR-Lyrae stars, observed at high cadence around the south ecliptic pole, form the third component. For the primary astrometric data set the typical uncertainty is about 0.3 mas for the positions and parallaxes, and about 1 mas yr−1 for the proper motions. A systematic component of ∼0.3 mas should be added to the parallax uncertainties. For the subset of ∼94 000 HIPPARCOS stars in the primary data set, the proper motions are much more precise at about 0.06 mas yr−1. For the secondary astrometric data set, the typical uncertainty of the positions is ∼10 mas. The median uncertainties on the mean G-band magnitudes range from the mmag level to ∼0.03 mag over the magnitude range 5 to 20.7. Conclusions. Gaia DR1 is an important milestone ahead of the next Gaia data release, which will feature five-parameter astrometry for all sources. Extensive validation shows that Gaia DR1 represents a major advance in the mapping of the heavens and the availability of basic stellar data that underpin observational astrophysics. Nevertheless, the very preliminary nature of this first Gaia data release does lead to a number of important limitations to the data quality which should be carefully considered before drawing conclusions from the data

Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente

Crystal Structure and Size-Dependent Neutralization Properties of HK20, a Human Monoclonal Antibody Binding to the Highly Conserved Heptad Repeat 1 of gp41

The human monoclonal antibody (mAb) HK20 neutralizes a broad spectrum of primary HIV-1 isolates by targeting the highly conserved heptad repeat 1 (HR1) of gp41, which is transiently exposed during HIV-1 entry. Here we present the crystal structure of the HK20 Fab in complex with a gp41 mimetic 5-Helix at 2.3 Å resolution. HK20 employs its heavy chain CDR H2 and H3 loops to bind into a conserved hydrophobic HR1 pocket that is occupied by HR2 residues in the gp41 post fusion conformation. Compared to the previously described HR1-specific mAb D5, HK20 approaches its epitope with a different angle which might favor epitope access and thus contribute to its higher neutralization breadth and potency. Comparison of the neutralization activities of HK20 IgG, Fab and scFv employing both single cycle and multiple cycle neutralization assays revealed much higher potencies for the smaller Fab and scFv over IgG, implying that the target site is difficult to access for complete antibodies. Nevertheless, two thirds of sera from HIV-1 infected individuals contain significant titers of HK20-inhibiting antibodies. The breadth of neutralization of primary isolates across all clades, the higher potencies for C-clade viruses and the targeting of a distinct site as compared to the fusion inhibitor T-20 demonstrate the potential of HK20 scFv as a therapeutic tool

Why Are Outcomes Different for Registry Patients Enrolled Prospectively and Retrospectively? Insights from the Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF).

Background: Retrospective and prospective observational studies are designed to reflect real-world evidence on clinical practice, but can yield conflicting results. The GARFIELD-AF Registry includes both methods of enrolment and allows analysis of differences in patient characteristics and outcomes that may result. Methods and Results: Patients with atrial fibrillation (AF) and ≥1 risk factor for stroke at diagnosis of AF were recruited either retrospectively (n = 5069) or prospectively (n = 5501) from 19 countries and then followed prospectively. The retrospectively enrolled cohort comprised patients with established AF (for a least 6, and up to 24 months before enrolment), who were identified retrospectively (and baseline and partial follow-up data were collected from the emedical records) and then followed prospectively between 0-18 months (such that the total time of follow-up was 24 months; data collection Dec-2009 and Oct-2010). In the prospectively enrolled cohort, patients with newly diagnosed AF (≤6 weeks after diagnosis) were recruited between Mar-2010 and Oct-2011 and were followed for 24 months after enrolment. Differences between the cohorts were observed in clinical characteristics, including type of AF, stroke prevention strategies, and event rates. More patients in the retrospectively identified cohort received vitamin K antagonists (62.1% vs. 53.2%) and fewer received non-vitamin K oral anticoagulants (1.8% vs . 4.2%). All-cause mortality rates per 100 person-years during the prospective follow-up (starting the first study visit up to 1 year) were significantly lower in the retrospective than prospectively identified cohort (3.04 [95% CI 2.51 to 3.67] vs . 4.05 [95% CI 3.53 to 4.63]; p = 0.016). Conclusions: Interpretations of data from registries that aim to evaluate the characteristics and outcomes of patients with AF must take account of differences in registry design and the impact of recall bias and survivorship bias that is incurred with retrospective enrolment. Clinical Trial Registration: - URL: http://www.clinicaltrials.gov . Unique identifier for GARFIELD-AF (NCT01090362)