@article{AndresBruttelFriedrichsen2022, author = {Andres, Maximilian and Bruttel, Lisa and Friedrichsen, Jana}, title = {How communication makes the difference between a cartel and tacit collusion}, series = {European economic review}, volume = {152}, journal = {European economic review}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0014-2921}, doi = {10.1016/j.euroecorev.2022.104331}, pages = {1 -- 18}, year = {2022}, abstract = {This paper sheds new light on the role of communication for cartel formation. Using machine learning to evaluate free-form chat communication among firms in a laboratory experiment, we identify typical communication patterns for both explicit cartel formation and indirect attempts to collude tacitly. We document that firms are less likely to communicate explicitly about price fixing and more likely to use indirect messages when sanctioning institutions are present. This effect of sanctions on communication reinforces the direct cartel-deterring effect of sanctions as collusion is more difficult to reach and sustain without an explicit agreement. Indirect messages have no, or even a negative, effect on prices.}, language = {en} } @article{AndresBruttelFriedrichsen2021, author = {Andres, Maximilian and Bruttel, Lisa and Friedrichsen, Jana}, title = {The leniency rule revisited}, series = {International journal of industrial organization}, volume = {76}, journal = {International journal of industrial organization}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0167-7187}, doi = {10.1016/j.ijindorg.2021.102728}, year = {2021}, abstract = {The experimental literature on antitrust enforcement provides robust evidence that communication plays an important role for the formation and stability of cartels. We extend these studies through a design that distinguishes between innocuous communication and communication about a cartel, sanctioning only the latter. To this aim, we introduce a participant in the role of the competition authority, who is properly incentivized to judge the communication content and price setting behavior of the firms. Using this novel design, we revisit the question whether a leniency rule successfully destabilizes cartels. In contrast to existing experimental studies, we find that a leniency rule does not affect cartelization. We discuss potential explanations for this contrasting result.}, language = {en} } @article{MeythalerKrauseBaumannetal.2023, author = {Meythaler, Antonia and Krause, Hannes-Vincent and Baumann, Annika and Krasnova, Hanna and Thatcher, Jason Bennett}, title = {The rise of metric-based digital status}, series = {European Journal of Information Systems}, journal = {European Journal of Information Systems}, publisher = {Taylor and Francis}, address = {London}, issn = {0960-085X}, doi = {10.1080/0960085X.2023.2290707}, pages = {1 -- 28}, year = {2023}, abstract = {Widespread on social networking sites (SNSs), envy has been linked to an array of detrimental outcomes for users' well-being. While envy has been considered a status-related emotion and is likely to be experienced in response to perceiving another's higher status, there is a lack of research exploring how status perceptions influence the emergence of envy on SNSs. This is important because SNSs typically quantify social interactions and reach with metrics that indicate users' relative rank and status in the network. To understand how status perceptions impact SNS users, we introduce a new form of metric-based digital status rooted in SNS metrics that are available and visible on a platform. Drawing on social comparison theory and status literature, we conducted an online experiment to investigate how different forms of status contribute to the proliferation of envy on SNSs. Our findings shed light on how metric-based digital status influences feelings of envy on SNSs. Specifically, we could show that metric-based digital status impacts envy through increasing perceptions of others' socioeconomic and sociometric statuses. Our study contributes to the growing discourse on the negative outcomes associated with SNS use and its consequences for users and society.}, language = {en} } @article{BruttelZiemann2022, author = {Bruttel, Lisa Verena and Ziemann, Niklas}, title = {How do people discount over spatial distance?}, series = {German economic review}, volume = {24}, journal = {German economic review}, number = {1}, publisher = {De Gruyter}, address = {Berlin}, issn = {1465-6485}, doi = {10.1515/ger-2021-0106}, pages = {33 -- 67}, year = {2022}, abstract = {This paper studies how individuals discount the utility they derive from their provision of goods over spatial distance. In a controlled laboratory experiment in Germany, we elicit preferences for the provision of the same good at different locations. To isolate spatial preferences from any other direct value of the goods being close to the individual, we focus on goods with "existence value." We find that individuals put special weight on the provision of these goods in their immediate vicinity. This "vicinity bias" represents a spatial analogy to the "present bias" in the time dimension.}, language = {en} } @article{BruttelGuethNithammeretal.2022, author = {Bruttel, Lisa Verena and G{\"u}th, Werner and Nithammer, Juri and Orland, Andreas}, title = {Inefficient cooperation under stochastic and strategic uncertainty}, series = {Conflict resolution}, volume = {66}, journal = {Conflict resolution}, number = {4-5}, publisher = {Sage Publ.}, address = {Thousand Oaks}, issn = {0022-0027}, doi = {10.1177/00220027211066614}, pages = {755 -- 782}, year = {2022}, abstract = {Stochastic uncertainty can cause coordination problems that may hinder mutually beneficial cooperation. We propose a mechanism of ex-post voluntary transfers designed to circumvent these coordination problems and ask whether it can increase efficiency. To test this transfer mechanism, we implement a controlled laboratory experiment based on a repeated Ultimatum Game with a stochastic endowment. Contrary to our hypothesis, we find that allowing voluntary transfers does not lead to an efficiency increase. We suggest and analyze two major reasons for this failure: first, stochastic uncertainty forces proposers intending to cooperate to accept high strategic uncertainty, which many proposers avoid; second, many responders behave only incompletely conditionally cooperatively, which hinders cooperation in future periods.}, language = {en} } @article{HalbrueggeBanerjiMeerholz2022, author = {Halbr{\"u}gge, Lena and Banerji, Amitabh and Meerholz, Klaus}, title = {Hallo Zukunft!}, series = {Chemie konkret : CHEMKON ; Forum f{\"u}r Unterricht und Didaktik}, volume = {29}, journal = {Chemie konkret : CHEMKON ; Forum f{\"u}r Unterricht und Didaktik}, number = {51}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {0944-5846}, doi = {10.1002/ckon.202200030}, pages = {355 -- 361}, year = {2022}, abstract = {Gedruckte Elektronik ist nicht nur ein aufstrebendes Forschungsfeld, sie wird in naher Zukunft auch eine wesentliche Rolle in unserem Alltag spielen. Gedruckte, elektronische Bauteile k{\"o}nnen sehr d{\"u}nn und flexibel sein und somit vielf{\"a}ltig eingesetzt werden. F{\"u}r die Implementation in der (Hoch-)Schule haben die Autoren eine flexible, lichtemittierende Folie entwickelt, die mit einfachen Materialien und Methoden manuell gedruckt werden kann.}, language = {de} } @article{KrauseGrosseDetersBaumannetal.2022, author = {Krause, Hannes-Vincent and Große Deters, Fenne and Baumann, Annika and Krasnova, Hanna}, title = {Active social media use and its impact on well-being}, series = {Journal of computer-mediated communication : a journal of the International Communication Association}, volume = {28}, journal = {Journal of computer-mediated communication : a journal of the International Communication Association}, number = {1}, publisher = {Oxford Univ. Press}, address = {Oxford}, issn = {1083-6101}, doi = {10.1093/jcmc/zmac037}, pages = {12}, year = {2022}, abstract = {Active use of social networking sites (SNSs) has long been assumed to benefit users' well-being. However, this established hypothesis is increasingly being challenged, with scholars criticizing its lack of empirical support and the imprecise conceptualization of active use. Nevertheless, with considerable heterogeneity among existing studies on the hypothesis and causal evidence still limited, a final verdict on its robustness is still pending. To contribute to this ongoing debate, we conducted a week-long randomized control trial with N = 381 adult Instagram users recruited via Prolific. Specifically, we tested how active SNS use, operationalized as picture postings on Instagram, affects different dimensions of well-being. The results depicted a positive effect on users' positive affect but null findings for other well-being outcomes. The findings broadly align with the recent criticism against the active use hypothesis and support the call for a more nuanced view on the impact of SNSs.
Lay Summary Active use of social networking sites (SNSs) has long been assumed to benefit users' well-being. However, this established assumption is increasingly being challenged, with scholars criticizing its lack of empirical support and the imprecise conceptualization of active use. Nevertheless, with great diversity among conducted studies on the hypothesis and a lack of causal evidence, a final verdict on its viability is still pending. To contribute to this ongoing debate, we conducted a week-long experimental investigation with 381 adult Instagram users. Specifically, we tested how posting pictures on Instagram affects different aspects of well-being. The results of this study depicted a positive effect of posting Instagram pictures on users' experienced positive emotions but no effects on other aspects of well-being. The findings broadly align with the recent criticism against the active use hypothesis and support the call for a more nuanced view on the impact of SNSs on users.}, language = {en} } @article{BruttelStolley2020, author = {Bruttel, Lisa Verena and Stolley, Florian}, title = {Getting a yes}, series = {Journal of behavioral and experimental economics}, volume = {86}, journal = {Journal of behavioral and experimental economics}, publisher = {Elsevier}, address = {New York}, issn = {2214-8043}, doi = {10.1016/j.socec.2020.101550}, pages = {10}, year = {2020}, abstract = {This paper studies how the request for a favor has to be devised in order to maximize its chance of success. We present results from a mini-dictator game, in which the recipient can send a free-form text message to the dictator before the latter decides. We find that putting effort into the message, writing in a humorous way and mentioning reasons why the money is needed pays off. Additionally, we find differences in the behavior of male and female dictators. Only men react positively to efficiency arguments, while only women react to messages that emphasize the dictators power and responsibility.}, language = {en} } @article{Fischer2022, author = {Fischer, Caroline}, title = {Incentives can't buy me knowledge}, series = {Review of public personnel administration}, volume = {42}, journal = {Review of public personnel administration}, number = {2}, publisher = {Sage}, address = {London}, issn = {0734-371X}, doi = {10.1177/0734371X20986839}, pages = {368 -- 389}, year = {2022}, abstract = {This study examines whether incentives affect public employees' intention to share knowledge. Tested incentives satisfy needs for either achievement or appreciation. Both treatments were tested on implicit as well as explicit knowledge sharing. A 2 x 3 factorial survey experiment was designed to observe within-person and between-person effects. Data were collected from public employees in the core administration and healthcare sector (n = 623) in 2018. The analysis indicates that both treatments positively affect knowledge-sharing intention if it is explicit knowledge that ought to be shared. However, no effects of either treatment can be found in either type of knowledge sharing. No negative effect of the tested incentives on knowledge sharing was observed. Hence, incentives might not harm knowledge sharing but also do not pay off in organizational practice. In contrast to these motivation-enhancing human resource practices, ability and opportunity-enhancing practices should be tested to foster knowledge sharing.}, language = {en} } @article{HeuerOrland2019, author = {Heuer, Leonie and Orland, Andreas}, title = {Cooperation in the Prisoner's Dilemma}, series = {Royal Society Open Science}, volume = {6}, journal = {Royal Society Open Science}, publisher = {Royal Soc. Publ.}, address = {London}, issn = {2054-5703}, doi = {10.1098/rsos.182142}, pages = {9}, year = {2019}, abstract = {Cooperation is — despite not being predicted by game theory — a widely documented aspect of human behaviour in Prisoner's Dilemma (PD) situations. This article presents a comparison between subjects restricted to playing pure strategies and subjects allowed to play mixed strategies in a one-shot symmetric PD laboratory experiment. Subjects interact with 10 other subjects and take their decisions all at once. Because subjects in the mixed-strategy treatment group are allowed to condition their level of cooperation more precisely on their beliefs about their counterparts' level of cooperation, we predicted the cooperation rate in the mixed-strategy treatment group to be higher than in the pure-strategy control group. The results of our experiment reject our prediction: even after controlling for beliefs about the other subjects' level of cooperation, we find that cooperation in the mixed-strategy group is lower than in the pure-strategy group. We also find, however, that subjects in the mixedstrategy group condition their cooperative behaviour more closely on their beliefs than in the pure-strategy group. In the mixed-strategy group, most subjects choose intermediate levels of cooperation.}, language = {en} } @article{HuberGebhardtSchwab2015, author = {Huber, Christian and Gebhardt, Markus and Schwab, Susanne}, title = {Teacher feedback or fun playing games? An experimental study investigating the influence of teacher feedback on social acceptance in primary school}, series = {Psychologie in Erziehung und Unterricht : Zeitschrift f{\"u}r Forschung und Praxis}, volume = {62}, journal = {Psychologie in Erziehung und Unterricht : Zeitschrift f{\"u}r Forschung und Praxis}, number = {1}, publisher = {Reinhardt}, address = {M{\"u}nchen}, issn = {0342-183X}, doi = {10.2378/peu2015.art04d}, pages = {51 -- 64}, year = {2015}, language = {de} }