caa a22 4500 606228829 CHVBK 20210128101205.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10796-014-9502-9 doi (NATIONALLICENCE)springer-10.1007/s10796-014-9502-9 The effect of an individual's age on the perceived importance and usage intensity of communications services—A Bayesian Network analysis [Elektronische Daten] [Pekka Kekolahti, Juuso Karikoski, Antti Riikonen] Multiple novel interpersonal communications services have emerged recently, but how their usage and perceived importance are related to the personal characteristics of the users is still relatively unexplored. Therefore, the aim of this study is to explore the effect of an individual's age on the perceived importance and usage intensity of communications services based on Bayesian Networks using a survey of 3008 Finns during 2011. In the case of Short Message Service (SMS), Instant Messaging (IM), Internet forums and communities (e.g., Facebook & Twitter), and e-mail the results indicate that the perceived importance of the communications services decreases as the age increases. With phone calls and letters, however, no clear dependencies with age were identified. In the causal analysis the importance of Internet forums and communities was the only variable which can be stated to be directly caused by an individual's age. This variable also acts as a mediator in the path from age towards perceived importance of other communication services and also towards their usage intensity. These results about the central role of Internet forums and communities can be exploited, for example, by device manufacturers when designing their products, and by service providers when designing their consumer services. The study also provides new information for mobile operators about the dependencies between mobile communications services and a documented example workflow for research community to construct a causal Bayesian Network from a combination of observational data and domain expertise. Springer Science+Business Media New York, 2014 Communications services nationallicence Bayesian networks nationallicence Machine learning nationallicence Causality nationallicence Perceived importance nationallicence Usage intensity nationallicence Individual's age nationallicence Kekolahti Pekka Department of Communications and Networking, Aalto University, P.O. Box 13000, 00076, Aalto, Finland aut Karikoski Juuso Department of Communications and Networking, Aalto University, P.O. Box 13000, 00076, Aalto, Finland aut Riikonen Antti Department of Communications and Networking, Aalto University, P.O. Box 13000, 00076, Aalto, Finland aut Information Systems Frontiers Springer US; http://www.springer-ny.com 17/6(2015-12-01), 1313-1333 1387-3326 17:6<1313 2015 17 10796 https://doi.org/10.1007/s10796-014-9502-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10796-014-9502-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kekolahti Pekka Department of Communications and Networking, Aalto University, P.O. Box 13000, 00076, Aalto, Finland aut NATIONALLICENCE 700 1- Karikoski Juuso Department of Communications and Networking, Aalto University, P.O. Box 13000, 00076, Aalto, Finland aut NATIONALLICENCE 700 1- Riikonen Antti Department of Communications and Networking, Aalto University, P.O. Box 13000, 00076, Aalto, Finland aut NATIONALLICENCE 773 0- Information Systems Frontiers Springer US; http://www.springer-ny.com 17/6(2015-12-01), 1313-1333 1387-3326 17:6<1313 2015 17 10796