Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Terms of use: Documents in EconStor may OF DEMOGRAPHY / 2007 Belinda Aparicio Diaz, Thomas Fent, Alexia Prskawetz, and Laura Bernardi Transition to parenthood: The role of social interaction and endogenous networks AbstractEmpirical studies indicate that the transition to parenthood is influenced by an individual's peer group. To study the mechanisms that create interdependencies across individuals' transition to parenthood and its timing we apply an agent-based simulation model. We build a one-sex model and provide agents with four different characteristics. Based on these characteristics, agents endogenously form their network. Network members then may influence the agents' transition to higher parity levels. Our numerical simulations indicate that accounting for social interactions can explain the shift of first-birth probabilities in Austria over the period 1984 to . Moreover, we apply our model to forecast agespecific fertility rates up to . 2021 KeywordsTransition to parenthood, changes in age specific fertility rates, agent-based model, social interaction, endogenous network

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The persona method is a powerful approach to focus on needs and characteristics of target users, keeping complex user data, numbers and diagrams alive during the whole design cycle. However, the development of prosperous personas requires a considerable amount of time, effort and specific skills. This paper introduces the development of a set of 30 basic senior personas, covering a broad range of characteristics of European older adults, following a quantitative development approach. The aim of this tool is to support researchers and developers in extending empathy for their target users when developing ICT solutions for the benefit of older adults. The main innovation lies in the representativeness of the basic senior personas. The personas build on multifaceted quantitative data from a single source including micro-level information from roughly 12,500 older individuals living in different European countries. The resulting personas may be applied in their basic form but are extendable to specific contexts. Also, the suggested tool addresses the drawbacks of current existing personas describing older adults: being representative and cost-efficient. The basic senior personas, a filter tool, a manual and templates for "persona marketing" articles are available for free online under http://elderlypersonas.cure.at.