TY - GEN A1 - de Haas, Samuel A1 - Paha, Johannes T1 - Non-controlling minority shareholdings and collusion T2 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe N2 - This article merges theoretical literature on non-controlling minority shareholdings (NCMS) in a coherent model to study the effects of NCMS on competition and collusion. The model encompasses both the case of a common owner holding shares of rival firms as well as the case of cross ownership among rivals. We find that by softening competition, NCMS weaken the sustainability of collusion under a greater variety of situations than was indicated by earlier literature. Such effects exist, in particular, in the presence of an effective competition authority. T3 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe - 166 KW - collusion KW - common ownership KW - cross ownership KW - minority shareholdings Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-595993 SN - 0889-938X SN - 1573-7160 SN - 1867-5808 IS - 3 ER - TY - GEN A1 - Bilgen, Isa ED - Ammann, Odile ED - Bottega, Fiona ED - Bukovac, Jasmina T1 - Verantwortungsvoller Parentalismus BT - Der Staat im Dienst der Selbstbestimmung T2 - Verantwortung und Recht N2 - Individuelle Selbstbestimmung ist Kernelement der Menschenwürde und damit ein Höchstwert der Verfassung. Dennoch scheint sich ihr Schutz auf die Abwesenheit des Staates zu beschränken. Tatsächlich ist sie zahlreichen Gefährdungen ausgesetzt. Der Beitrag will darum ihren Schutz auf das gebotene Niveau heben. Art. 1 Abs. 1 GG verpflichtet den Staat nicht nur zur Achtung, sondern auch zum Schutz der Menschenwürde. Will er diesen Auftrag ernstnehmen, muss er sich entsprechend in den Dienst der Selbstbestimmung seiner Bürger stellen. Dazu darf und muss er ihnen bisweilen Grenzen setzen, um ihre Verantwortungsfähigkeit zu fördern. T3 - Zweitveröffentlichungen der Universität Potsdam : Rechtswissenschaftliche Reihe - 10 Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-589300 SN - 978-3-8487-8497-4 SN - 978-3-7489-2876-8 ER - TY - GEN A1 - Abujarour, Safa’a A1 - Köster, Antonia A1 - Krasnova, Hanna A1 - Wiesche, Manuel T1 - Technology as a source of power BT - Exploring how ICT use contributes to the social inclusion of refugees in Germany T2 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe N2 - Since the beginning of the recent global refugee crisis, researchers have been tackling many of its associated aspects, investigating how we can help to alleviate this crisis, in particular, using ICTs capabilities. In our research, we investigated the use of ICT solutions by refugees to foster the social inclusion process in the host community. To tackle this topic, we conducted thirteen interviews with Syrian refugees in Germany. Our findings reveal different ICT usages by refugees and how these contribute to feeling empowered. Moreover, we show the sources of empowerment for refugees that are gained by ICT use. Finally, we identified the two types of social inclusion benefits that were derived from empowerment sources. Our results provide practical implications to different stakeholders and decision-makers on how ICT usage can empower refugees, which can foster the social inclusion of refugees, and what should be considered to support them in their integration effort. T3 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe - 190 KW - culture, identity, and inclusion KW - empowerment KW - ict KW - refugees KW - social inclusion KW - technology Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-607491 UR - https://hdl.handle.net/10125/70936 SN - 978-0-9981331-4-0 SN - 1867-5808 ER - TY - GEN A1 - Xie, Chao A1 - Jia, Tianye A1 - Rolls, Edmund T. A1 - Robbins, Trevor W. A1 - Sahakian, Barbara J. A1 - Zhang, Jie A1 - Liu, Zhaowen A1 - Cheng, Wei A1 - Luo, Qiang A1 - Zac Lo, Chun-Yi A1 - Schumann, Gunter A1 - Feng, Jianfeng A1 - Wang, He A1 - Banaschewski, Tobias A1 - Barker, Gareth J. A1 - Bokde, Arun L.W. A1 - Büchel, Christian A1 - Quinlan, Erin Burke A1 - Desrivières, Sylvane A1 - Flor, Herta A1 - Grigis, Antoine A1 - Garavan, Hugh A1 - Gowland, Penny A1 - Heinz, Andreas A1 - Hohmann, Sarah A1 - Ittermann, Bernd A1 - Martinot, Jean-Luc A1 - Paillère Martinot, Marie-Laure A1 - Nees, Frauke A1 - Papadopoulos Orfanos, Dimitri A1 - Paus, Tomáš A1 - Poustka, Luise A1 - Fröhner, Juliane H. A1 - Smolka, Michael N. A1 - Walter, Henrik A1 - Whelan, Robert T1 - Reward versus nonreward sensitivity of the medial versus lateral orbitofrontal cortex relates to the severity of depressive symptoms T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - BACKGROUND: The orbitofrontal cortex (OFC) is implicated in depression. The hypothesis investigated was whether the OFC sensitivity to reward and nonreward is related to the severity of depressive symptoms. METHODS: Activations in the monetary incentive delay task were measured in the IMAGEN cohort at ages 14 years (n = 1877) and 19 years (n = 1140) with a longitudinal design. Clinically relevant subgroups were compared at ages 19 (high-severity group: n = 116; low-severity group: n = 206) and 14. RESULTS: The medial OFC exhibited graded activation increases to reward, and the lateral OFC had graded activation increases to nonreward. In this general population, the medial and lateral OFC activations were associated with concurrent depressive symptoms at both ages 14 and 19 years. In a stratified high-severity depressive symptom group versus control group comparison, the lateral OFC showed greater sensitivity for the magnitudes of activations related to nonreward in the high-severity group at age 19 (p = .027), and the medial OFC showed decreased sensitivity to the reward magnitudes in the high-severity group at both ages 14 (p = .002) and 19 (p = .002). In a longitudinal design, there was greater sensitivity to nonreward of the lateral OFC at age 14 for those who exhibited high depressive symptom severity later at age 19 (p = .003). CONCLUSIONS: Activations in the lateral OFC relate to sensitivity to not winning, were associated with high depressive symptom scores, and at age 14 predicted the depressive symptoms at ages 16 and 19. Activations in the medial OFC were related to sensitivity to winning, and reduced reward sensitivity was associated with concurrent high depressive symptom scores. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 860 KW - adolescents KW - depression KW - monetary incentive delay task KW - nonreward sensitivity KW - orbitofrontal cortex KW - reward anticipation KW - reward sensitivity KW - ventral striatum Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-557882 SN - 1866-8364 IS - 3 ER - TY - GEN A1 - Pearce, Warren A1 - Özkula, Suay M. A1 - Greene, Amanda K. A1 - Teeling, Lauren A1 - Bansard, Jennifer S. A1 - Omena, Janna Joceli A1 - Rabello, Elaine Teixeira T1 - Visual cross-platform analysis BT - Digital methods to research social media images T2 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe N2 - Analysis of social media using digital methods is a flourishing approach. However, the relatively easy availability of data collected via platform application programming interfaces has arguably led to the predominance of single-platform research of social media. Such research has also privileged the role of text in social media analysis, as a form of data that is more readily gathered and searchable than images. In this paper, we challenge both of these prevailing forms of social media research by outlining a methodology for visual cross-platform analysis (VCPA), defined as the study of still and moving images across two or more social media platforms. Our argument contains three steps. First, we argue that cross-platform analysis addresses a gap in research methods in that it acknowledges the interplay between a social phenomenon under investigation and the medium within which it is being researched, thus illuminating the different affordances and cultures of web platforms. Second, we build on the literature on multimodal communication and platform vernacular to provide a rationale for incorporating the visual into cross-platform analysis. Third, we reflect on an experimental cross-platform analysis of images within social media posts (n = 471,033) used to communicate climate change to advance different modes of macro- and meso-levels of analysis that are natively visual: image-text networks, image plots and composite images. We conclude by assessing the research pathways opened up by VCPA, delineating potential contributions to empirical research and theory and the potential impact on practitioners of social media communication. T3 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe - 199 KW - research methodology KW - visual analysis KW - social media KW - climate change Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-515539 SN - 1867-5808 IS - 2 ER - TY - GEN A1 - Urbach, Tina A1 - Fay, Doris T1 - Leader member exchange in leaders' support for voice BT - good relationships matter in situations of power threat T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - While previous research underscores the role of leaders in stimulating employee voice behaviour, comparatively little is known about what affects leaders' support for such constructive but potentially threatening employee behaviours. We introduce leader member exchange quality (LMX) as a central predictor of leaders' support for employees' ideas for constructive change. Apart from a general benefit of high LMX for leaders' idea support, we propose that high LMX is particularly critical to leaders' idea support if the idea voiced by an employee constitutes a power threat to the leader. We investigate leaders' attribution of prosocial and egoistic employee intentions as mediators of these effects. Hypotheses were tested in a quasi-experimental vignette study (N = 160), in which leaders evaluated a simulated employee idea, and a field study (N = 133), in which leaders evaluated an idea that had been voiced to them at work. Results show an indirect effect of LMX on leaders' idea support via attributed prosocial intentions but not via attributed egoistic intentions, and a buffering effect of high LMX on the negative effect of power threat on leaders' idea support. Results differed across studies with regard to the main effect of LMX on idea support. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 842 KW - proactive personality KW - work KW - consequences KW - behavior KW - performance KW - model KW - trust KW - metaanalysis KW - antecedents KW - supervisors Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-510904 SN - 1866-8364 VL - 70 IS - 2 ER - TY - GEN A1 - Schuster, Isabell A1 - Tomaszewska, Paulina T1 - Pathways from child sexual and physical abuse to sexual and physical intimate partner violence victimization through attitudes toward intimate partner violence T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - Although many studies have shown that victims of child abuse have an increased vulnerability to revictimization in intimate relationships, the underlying mechanisms are not yet sufficiently well understood. Therefore, this study aimed at examining this relationship for both sexual and physical forms of violence as well as investigating the potential mediating role of attitudes toward sexual and physical intimate partner violence (IPV). Also, the potential moderating role of gender was explored. Sexual and physical child abuse and IPV victimization in adulthood as well as attitudes toward the respective form of IPV were assessed among 716 participants (448 female) in an online survey. The path analyses showed that child sexual abuse was positively linked to sexual IPV victimization among both women and men, whereas child physical abuse was positively associated with physical IPV victimization among women only. Furthermore, the relationship between both forms of child abuse and IPV victimization was mediated through more supportive attitudes toward the respective forms of IPV, but only among men. This study provides novel insights regarding the links between sexual and physical child abuse and revictimization in adulthood, suggesting that supporting attitudes toward IPV may be seen as vulnerability factor for revictimization. The moderating role of gender is especially discussed. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 843 KW - child abuse KW - intimate partner violence KW - attitudes toward intimate partner violence KW - gender Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-543396 SN - 1866-8364 IS - 4 ER - TY - GEN A1 - Schuster, Isabell A1 - Tomaszewska, Paulina A1 - Marchewka, Juliette A1 - Krahé, Barbara T1 - Does question format matter in assessing the prevalence of sexual aggression? BT - A methodological study T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - As research on sexual aggression has been growing, methodological issues in assessing prevalence rates have received increased attention. Building on work by Abbey and colleagues about effects of question format, participants in this study (1,253; 621 female; 632 male) were randomly assigned to one of two versions of the Sexual Aggression and Victimization Scale (SAV-S). In Version 1, the coercive tactic (use/threat of physical force, exploitation of the inability to resist, verbal pressure) was presented first, and sexual acts (sexual touch, attempted and completed sexual intercourse, other sexual acts) were presented as subsequent questions. In Version 2, sexual acts were presented first, and coercive tactics as subsequent questions. No version effects emerged for overall perpetration rates reported by men and women. The overall victimization rate across all items was significantly higher in the tactic-first than in the sexual-act-first conditions for women, but not for men. Classifying participants by their most severe experience of sexual victimization showed that fewer women were in the nonvictim category and more men were in the nonconsensual sexual contact category when the coercive tactic was presented first. Sexual experience background did not moderate the findings. The implications for the measurement of self-reported sexual aggression victimization and perpetration are discussed. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 844 KW - self-report measures KW - experiences survey KW - risk-factors KW - victimization KW - rape KW - assault KW - women KW - perpetration KW - reliability KW - responses Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-546632 SN - 1866-8364 IS - 4 ER - TY - GEN A1 - Skowronski, Marika A1 - Busching, Robert A1 - Krahé, Barbara T1 - Predicting adolescents’ self-objectification from sexualized video game and Instagram use BT - A longitudinal study T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - A growing body of research has demonstrated negative effects of sexualization in the media on adolescents' body image, but longitudinal studies and research including interactive and social media are scarce. The current study explored the longitudinal associations of adolescents' use of sexualized video games (SVG) and sexualized Instagram images (SII) with body image concerns. Specifically, our study examined relations between adolescents' SVG and SII use and appearance comparisons, thin- and muscular-ideal internalization, valuing appearance over competence, and body surveillance. A sample of 660 German adolescents (327 female, 333 male;M-age = 15.09 years) participated in two waves with an interval of 6 months. A structural equation model showed that SVG and SII use at Time 1 predicted body surveillance indirectly via valuing appearance over competence at Time 2. Furthermore, SVG and SII use indirectly predicted both thin- and muscular-ideal internalization through appearance comparisons at Time 1. In turn, thin-ideal internalization at Time 1 predicted body surveillance indirectly via valuing appearance over competence at Time 2. The results indicate that sexualization in video games and on Instagram can play an important role in increasing body image concerns among adolescents. We discuss the findings with respect to objectification theory and the predictive value of including appearance comparisons in models explaining the relation between sexualized media and self-objectification. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 845 KW - social media KW - computer games KW - Sexualization KW - body image KW - self-objectification Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-541992 SN - 1866-8364 IS - 9-10 ER - TY - GEN A1 - Shaki, Samuel A1 - Fischer, Martin H. T1 - Systematic spatial distortion of quantitative estimates T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - Magnitude estimation has been studied since the beginnings of scientific psychology and constitutes a fundamental aspect of human behavior. Yet, it has apparently never been noticed that estimates depend on the spatial arrangement used. We tested 167 adults in three experiments to show that the spatial layout of stimuli and responses systematically distorts number estimation, length production, and weight reproduction performance. The direction of distortion depends on the observer's counting habits, but does not seem to reflect the use of spatially associated number concepts. Our results imply that all quantitative estimates are contaminated by a "spell of space" whenever stimuli or responses are spatially distributed. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 846 KW - associations KW - numbers KW - habits KW - spaces Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-545457 SN - 1866-8364 IS - 6 ER -