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This study investigates which intervention strategies most effectively increase privacy protection behavior. Drawing upon Protection Motivation Theory, we examine the short- and long-term effects of (combinations) of three strategies: (1) increasing awareness of the threat to privacy, (2) training effective privacy protection behavior, and (3) addressing and combating privacy fatigue. We conducted a longitudinal experiment in the Netherlands with three waves ( Nwave1 = 1,000, 2 weeks later Nwave2 = 799, 2 months later Nwave3 = 465) and eight between subjects conditions (no strategy and all possible combinations of the strategies). Results show that the training strategy increased self-efficacy and response efficacy, immediately increased all privacy protection behaviors, and positively impacted tracking blocking behavior in the short- and long-term, actual cookie rejection in the short-term (2 weeks later), and deletion behavior in the long-term (2 months later). The threat and fatigue strategies did not have their anticipated effects, but the threat strategy did immediately increase tracking blocking intentions, and the fatigue strategy had a positive, short-term effect on cookie rejection behavior.

Through various online activities, individuals produce large amounts of data that are collected by companies for the purpose of providing users with personalized communication. In the light of this mass collection of personal data, the transparency and control paradigm for personalized communication has led to increased attention from legislators and academics. However, in the scientific literature no clear definition of personalization transparency and control exists, which could lead to reliability and validity issues, impeding knowledge accumulation in academic research. In a literature review, we analyzed 31 articles and observed that: 1) no clear definitions of personalization transparency or control exist; 2) they are used interchangeably in the literature; 3) collection, processing, and sharing of data are the three objects of transparency and control; and 4) increased transparency does not automatically increase control because first awareness needs to be raised in the individual. Also, the relationship between awareness and control depends on the ability and the desire to control. This study contributes to the field of algorithmic communication by creating a common understanding of the transparency and control paradigm and thus improves validity of the results. Further, it progresses research on the issue by synthesizing existing studies on the topic, presenting the transparency-awareness-control framework, and formulating propositions to guide future research.

While data-driven personalization strategies are permeating all areas of online communication, the impact for individuals and society as a whole is still not fully understood. Drawing on Facebook as a case study, we combine online tracking and self-reported survey data to assess who gets targeted with what content. We tested relationships between user characteristics (i.e. socio-demographic and individual perceptions) and exposure to branded content on Facebook. Findings suggest that social media use sophisticated algorithms to target specific groups of users, especially in the context of gender-stereotyping and health. Health-related content was predominantly targeted at older users, females, and at those with higher levels of trust in online companies, as well as those in poorer health conditions. This study provides a first indication of unfair targeting that reinforces stereotypes and creates inequalities, and suggests rethinking the impact of algorithmic targeting in creating new forms of individual and societal vulnerabilities.

Which legal, ethical and societal conditions need to be fulfilled for the use of digital solutions in managing the COVID-19 exit-strategy? This was the central question of this research. Digital technologies can be part of solutions to societal challenges, for example to manage the pandemic and lead the Netherlands out of the COVID-19 crisis. One set of technologies that figured particularly prominently in that debate was the use of contact tracing apps like the CoronaMelder, as well as digital vaccination passports (CoronaCheck app). In the Netherlands, Europe and worldwide, the introduction of apps such as the CoronaMelder or the CoronaCheck app was met by criticism from experts, politicians, civil society and academics. Concerns range from the lack of evidence for the effectiveness of such apps, uncertainty about the conditions that need to be fulfilled to reach their goal, our growing dependency on technology companies up to worries about the fundamental rights and adverse effects for vulnerable groups, such as elderly or users without a smart phone. The overall goal of the research was to monitor the societal, ethical and legal implications of implementing apps like the CoronaMelder, and from that draw lessons for the future use of 'technology-assisted governance solutions'. One important conclusion from the report is that 'there are no easy technological fixes, and in order for a technological solution to work, it needs to be part of a broader vision on what such a solution needs to function in society, achieve its intended goals and respect the fundamental rights of users as well as non-users.' The report also offers critical reflections on the need for democratic legitimisation and accountability, the role of big tech and insights on the societal impact of the CoronaMelder and other technological solutions.

Media and communication have become ubiquitous in today's societies and affect all aspects of life. On an individual level, they impact how we learn about the world, how we entertain ourselves, and how we interact with others. On an organisational level, the interactions between media and organisations, such as political parties, NGOs, businesses and brands, shape organisations' reputation, legitimacy, trust and (financial) performance, as well as individuals' consumer, political, social and health behaviours. At the societal level, media and communication are crucial for shaping public opinion on current issues such as climate change, sustainability, diversity, and well-being. Media challenges are widespread and include mis- and disinformation, the negative impact of algorithms on our information diets, challenges to our privacy, cyberbullying, media addiction, and unwanted persuasion, among many others. All this makes the study of media and communication crucial. This book provides a broad overview of the ways in which people create, use, and experience their media environment, and the role of media and communication for individuals, organisations, and society. The chapters in the book were written by researchers from the Amsterdam School of Communication Research (ASCoR) on the occasion of its 25th anniversary. ASCoR is today the largest research institute of its kind in Europe and has developed over the past 25 years into one of the best communications research institutes in the world