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on Information and Communication Technologies |
| By: | Müller, Karsten (National University of Singapore, Department of Finance); Pan, Yuanyuan (National University of Singapore, Department of Finance); Schwarz, Carlo (Bocconi University, Department of Economics) |
| Abstract: | We investigate the effect of social media adoption on stock market participation in the United States. Using plausibly exogenous variation in the early adoption of Twitter across counties, we show that a 10% increase in social media usage is associated with a 2.5% higher rate of stock ownership and an overall increase in stock market wealth. Consistent with the idea that social media can lower the cost of accessing information, we find that Twitter adoption is associated with a decline in the number of financial advisors and has larger effects on stock ownership in counties with lower levels of pre-existing stock market knowledge. Twitter adoption also fuels interest in “meme stocks, †which tend to be more volatile and owned by retail investors. Overall, our results suggest a distinct impact of social media platforms on household portfolio choices that differs from that of other modern information technologies. |
| Keywords: | Social Media, Stock Market Participation, Household Finance, Participation Puzzle JEL Classification: |
| Date: | 2024 |
| URL: | http://d.repec.org/n?u=RePEc:cge:wacage:699&r=ict |
| By: | Mohamed Ali Ben Halima (CEET - Centre d'études de l'emploi et du travail - CNAM - Conservatoire National des Arts et Métiers [CNAM] - HESAM - HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université - M.E.N.E.S.R. - Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche - Ministère du Travail, de l'Emploi et de la Santé, LIRSA - Laboratoire interdisciplinaire de recherche en sciences de l'action - CNAM - Conservatoire National des Arts et Métiers [CNAM] - HESAM - HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université, MESuRS - Laboratoire Modélisation, épidémiologie et surveillance des risques sanitaires - CNAM - Conservatoire National des Arts et Métiers [CNAM] - HESAM - HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université, TEPP - Théorie et évaluation des politiques publiques - CNRS - Centre National de la Recherche Scientifique); Nathalie Greenan (CEET - Centre d'études de l'emploi et du travail - CNAM - Conservatoire National des Arts et Métiers [CNAM] - HESAM - HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université - M.E.N.E.S.R. - Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche - Ministère du Travail, de l'Emploi et de la Santé, LIRSA - Laboratoire interdisciplinaire de recherche en sciences de l'action - CNAM - Conservatoire National des Arts et Métiers [CNAM] - HESAM - HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université, TEPP - Théorie et évaluation des politiques publiques - CNRS - Centre National de la Recherche Scientifique); Joseph Lanfranchi (LEMMA - Laboratoire d'économie mathématique et de microéconomie appliquée - Université Paris-Panthéon-Assas, CEET - Centre d'études de l'emploi et du travail - CNAM - Conservatoire National des Arts et Métiers [CNAM] - HESAM - HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université - M.E.N.E.S.R. - Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche - Ministère du Travail, de l'Emploi et de la Santé) |
| Abstract: | This article evaluates the impact of cumulative ICT and management changes on long-term sickness absences. We use a unique dataset matching a company-level survey on computerisation and organisational change with an administrative file allowing us to track health issues amongst the working population. We implement a difference-in-difference approach using two time windows: a three-year period after changes have occurred and another period corresponding to the period of implementation of changes. We identify three treatments according to the sets of tools implemented by firms and reflecting different types and degrees of organisational changes: Information and Communication technology (ICT) changes only, management changes only, and cumulative ICT and management changes. We find the following core result: cumulative changes in ICT and management tools increase occupational risks and detrimentally affect employees' health, while management changes only reduce long-term sickness absences. However, there are gendered and occupational differences in the timing and strength of these impacts. First, when firms implement cumulative ICT and management changes, health impairments start for women during the change phase, whereas for men, they appear only afterwards. Second, while we observe the protective effects of managerial changes on their own for both genders during the change phase, these effects do not persist afterwards for women. Third, managers and professionals are protected in the change phase against the serious health consequences of cumulative ICT and management changes, and they benefit from the reduction in risks associated with management changes alone. Hence, cumulative ICT and management changes, which are likely to yield the highest returns for firms in the presence of productive complementarities, are also associated with greater health damage. Furthermore, this social cost of organisational change is only partially borne by the firms responsible for it. We show that the most vulnerable employees are more likely to be mobile (voluntarily or involuntarily) after the implementation of changes. These results point to the need for public authorities assessing occupational safety and health policies to better understand the process of organisational change (its complexity, intensity, dynamics) and the social construction of health behaviours and of the uses of technology and management tools. |
| Keywords: | Organizational changes, Information and Communication technology (ICT), Management changes, Long-term sickness absences, Gender and age behaviour |
| Date: | 2023 |
| URL: | http://d.repec.org/n?u=RePEc:hal:journl:hal-04404126&r=ict |
| By: | Zhiguo He; Sheila Jiang; Douglas Xu |
| Abstract: | This paper develops a general equilibrium model to examine the role of information technology when intermediaries facilitate the origination and distribution of assets given information asymmetry. Information technology measures the informativeness of asset-quality signals received by intermediaries, who purchase assets produced by originators and then resell them to uninformed investors. Allowing intermediaries to operate has a mixed social welfare effect: Uninformed intermediation can be welfare reducing when adverse selection is severe in the economy, while informed intermediation always improves social welfare. |
| JEL: | D52 D82 G21 G23 O33 |
| Date: | 2024–01 |
| URL: | http://d.repec.org/n?u=RePEc:nbr:nberwo:32052&r=ict |
| By: | Grégory Jemine (HEC Liège); François-Régis Puyou (EM - emlyon business school); Florence Bouvet (HEC Liège) |
| Abstract: | "Purpose: Increasingly, emerging information technologies such as shared software and continuous accounting are offering alternative ways to perform accounting tasks in a supposedly more efficient fashion. Yet, few studies have investigated how they affect the provision of accounting services, especially in the context of small accounting firms, which provide legal and tax services to entrepreneurs and businesses. Drawing on the service perspective, the paper critically examines how technological innovation challenges and reconfigures the co-production of accounting services in these firms.Design/methodology/approach:The paper answers calls issued in prior studies to conduct empirical research on emerging information technologies for accountants. It focuses on the specific context of small accounting firms and draws on interviews with small accounting firms' managers (n = 20).Findings:The study emphasizes five significant challenges that accounting firm managers face when using information technologies to support the provision of their services (ensuring reliability, factoring in their heterogeneous client base, repricing, training clients to use new technologies and promoting advisory services). Information technologies are shown to have a structuring role in the co-production of accounting services, as they lead to reconfigurations of the relationships between accountants and their clients. A range of four configurations is developed to highlight accountants' strategies to maintain collaborative relationships with their clients while integrating new technologies into their work practices.Originality/value:By conceptualizing accounting services as a co-production process, the paper offers new insights into the implications of emerging information technologies for small accounting firms." |
| Keywords: | Technological innovation, Service perspective, Co-production, Small accounting firms, Emerging technologies, Continuous accounting |
| Date: | 2024–01–04 |
| URL: | http://d.repec.org/n?u=RePEc:hal:journl:hal-04325739&r=ict |
| By: | Joël Cariolle (FERDI - Fondation pour les Etudes et Recherches sur le Développement International, CERDI - Centre d'Études et de Recherches sur le Développement International - IRD - Institut de Recherche pour le Développement - CNRS - Centre National de la Recherche Scientifique - UCA - Université Clermont Auvergne); Yasmine Elkhateeb (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique, Department of Economics, Faculty of Economics and Political Science, Cairo University); Mathilde Maurel (FERDI - Fondation pour les Etudes et Recherches sur le Développement International, CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique) |
| Abstract: | The use of the Internet to access news has an impact on African citizens' perceptions of democracy. Using repeated cross-sectional data from the Afrobarometer survey across 35 African countries over the period 2011-2018, along with an instrumental variable approach, allows addressing potential endogeneity bias between Internet use and citizens' perceptions. The results indicate that using the Internet to obtain information has a significant negative effect on both the preference for and the perception of the extent of democracy. This negative effect is due to several factors. First, Internet use erodes trust in government institutions, mainly in the parliament and the ruling party. It increases the perception that parliament members are involved in corruption. In addition, the erosion of trust is correlated with more political mobilization, in the form of greater participation in demonstrations and voting. These results echo the existing literature and, in particular, hint at the risks of reversal of nascent democratization processes. Finally, the Internet seems to act as a misinformation channel. On the one hand, Internet users' perception of the extent of democracy and perception of the corruption of legislators diverge from experts' assessments. On the other hand, Internet use increases the likelihood of inconsistency in respondents' stances on their preference for democracy. The Internet is not a neutral information channel: it tends to undermine citizens' preference for democracy while also altering perceptions about political institutions. |
| Keywords: | Internet, Democracy, Misinformation, Africa, Media & democracy |
| Date: | 2024–01–29 |
| URL: | http://d.repec.org/n?u=RePEc:hal:cesptp:hal-04423752&r=ict |
| By: | Jiří Homan (Faculty of Economics, University of South Bohemia In České Budějovice) |
| Abstract: | This article aims to explain the features of the cloud computing platform and the possible deployment modes of these services. It further explains the concept of big data. Because these phenomena could have a positive benefit in the case of implementation for small and medium-sized Czech companies (SMEs), we devote ourselves to the description and use of existing methodologies that explain the penetration of new technologies towards their users. To form a broader view of the current situation, we, in this paper, provide an overview of the current use of individual services provided through the cloud computing platform by small and medium-sized enterprises. From this overview, it is evident that small and medium-sized enterprises use more and more applications based on cloud computing. Our overview also showed that the field of big data processing is not relevant for SMEs. They do not use cloud solutions aimed at processing big data. This area may be relevant in the future in the future by purchasing Internet of Things services. Among the implemented cloud computing services, services that implementation is not too demanding stand out. It is not yet clear what leads SEMs businesses to this behavior. In our research, we propose to find out, with the help of semi-structured interviews, how the decision-making process takes place in SMEs. We propose a series of questions for these interviews with individual investigated factors. When designing them, we are based on the preliminary research and existing research articles dealing with this topic. |
| Keywords: | Cloud computing, SME, cloud adoption, cloud application usage, IaaS, PaaS, SaaS |
| JEL: | A30 C40 O33 |
| Date: | 2023–05 |
| URL: | http://d.repec.org/n?u=RePEc:boh:wpaper:01_2023&r=ict |