The overall purpose of this thesis is to investigate the economic value and use of geological information. Earthobservations of a geological nature, may have profound impacts on peoples everyday lives. Geological informationplays a key role in addressing the challenges of sustainable development, and contributes to improved decisionmakingprocesses related to, for instance, land degradation and water protection. Still, few have researched theeconomic values attached to such information. This thesis contains an introduction and five self-contained papers.Paper (I) provides a review of previous research addressing the economic value of geological information andother earth observations, as well as, related products, services and infrastructure. The paper also identifiesimportant lessons and topics that require increased attention in future research. The review of prior research showsthat significant economic benefits can be attached to the use of geological information. Still, it is often difficult tocompare results across studies since they differ in scope and make alternative assumptions concerning whichsectors to cover. Furthermore, previous research is not uniform in its treatment of potential (rather than onlyexisting) users, and it employs varying conceptions of avoided costs. The paper concludes that future researchshould devote more attention to the public and experience good characteristics of geological information and othertypes of earth observations, thus highlighting the preconditions for information adoption as well as addressing therole of potential users.Papers (II) and (III) investigate the determinants of adopting geological information in the public sector, with anemphasis on Swedish municipalities. Paper (II) contributes to the literature by providing theoretical explanationsand empirical findings on various individual and organizational factors influencing the adoption of geologicalinformation. The paper employs an information adoption model based on literature on diffusion of innovation. Itis estimated using data collected from 677 officials in all Swedish municipalities. The results indicate thatperceived usefulness and educational efforts have the largest influence on the adoption decision followed by agender effect. Furthermore, the results also show that organizational effects exist at the working unit level, butthere appear to be no spatial interactions across municipal boundaries.Paper (III) further investigates the adoption of geological information in the public sector by considering whetheranalyses of user patterns can be improved by considering an interrelated model estimation involving two types ofgeoinformation. The empirical tests focus on whether there are gender differences in how peer advice affects theuse of geoinformation. The information adoption model is estimated using probit and bivariate probits. Overall theresults indicate a more accurate prediction pattern when a secondary geoinformation decision was included, thussuggesting that different types of geoinformation should be analyzed jointly. The officials at Swedishmunicipalities tend to use both types of geoinformation, thus alluding to a demand for combined geoinformationproducts among the target population. Finally, there is evidence of women’s decisions to use geoinformation beingaffected by peer advice.Paper (IV) focuses on the economic value of hydrogeological information, namely water quality. The willingnessto pay (WTP) for reduced health risks following the exposure to emerging contaminants and microbial outbreaksin drinking water is assessed. Emerging contaminants, such as highly fluorinated substances (e..g., PFOA andPFOS), have been found in drinking water post treatment on a global level. The drinking water is the main sourceof exposure for humans. The WTP is assessed through a choice experiment approach, which also accounts fordifferences in perceptions between PFASs and microbial outbreaks due to parasites or bacteria. Knowledge aboutpublic preferences across different health threats is key to assessing support for policies aimed at reducing suchhealth risks. A majority of the respondents were found to have a higher WTP for reducing the risk of chemicalexposure to PFASs than reducing the corresponding risk of microbial outbreaks.In Paper (IV) it is evident that risk adverse individuals have a higher WTP for reducing health risks of drinkingwater, compared with individuals with other risk preferences. However, there is no consensus in the literature onhow to accurately capture risk preferences beyond financial decisions. Paper (V) therefore discusses thetheoretical assumptions used when measuring risk preferences and whether it is necessary to address domain riskspecific preferences. In order to test if a general risk preference is enough we present a hypothetical experimenton risk preferences for the health and financial domains, respectively. We also consider the design of theexperiment and compare the format with a reduced form to control for potential framing effects. The riskpreferences were elicited using switch multiple price list lotteries with hypothetical payments, and the questionswere adapted to the health domain by framing the lotteries as improvements in current health status using a visualanalogue scale as the reference point. The results show that individual risk preferences tend to be relativelyinconsistent across the two studied domains, and that the respondents appear to be more risk averse in the healthdomain than in the financial. The majority of the respondents tend to give too much weight to low-probabilityevents, which is consistent with cumulative prospect theory.

The dynamics of use and adoption of information on various online review platforms remain elusive and complex, indicating the importance of more research on electronic word of mouth (eWOM) and online consumer reviews (OCRs). Existing theoretical models do not fully explicate the role of the influential factors and their interrelations in information adoption. This research offers a more holistic model of information adoption. The Information Adoption Model (IAM) and the Elaboration Likelihood Model (ELM) are utilised as the theoretical foundations for the conceptual model while examining the factors that influence consumers' perceptions of and information adoption decisions from Independent and E-merchants' websites. Information usefulness is employed as a mediator. This research examines various COPs (consumer opinion platforms) by categorising consumers into four groups on the basis of their engagement behaviour and investigating their information adoption decisions. The research undertook quantitative methodology and conducted a survey on 635 respondents from Thailand. All hypotheses were developed and tested using data collected via an online questionnaire and were analysed with Structural Equation Modelling (SEM), with multigroup analysis techniques. Additionally, the research used two step cluster analysis and identified four groups of consumers on the basis of their engagement behaviour Quicker, Explorer, Confidant and Passionate. The findings are 1) A positively significant relationship between information usefulness and information adoption has been approved 2) Consumer adopt different information adoption criteria for different types of COPs 3) Consumers' assessment of different factors of OCRs varies due to the difference in the level of online engagement. The results offer useful implications for marketers by identifying and analysing the criteria that consumers adopt from specific platforms and underlining the effect of the level of consumer engagement on information adoption of OCRs.

Purpose: This thesis aims to research how homophily affects followers/consumers’ attitudes towards Instagram fashion influencers. In particular, the purpose is to investigate if the perceived level of identification (evaluated according the homophily variables and types of identification) between followers/consumers and fashion influencers is one of the drivers behind followers/consumers’ engagement on Instagram. Additionally, consumption patterns on Instagram will be further investigated, paying special attention in determining if followers/consumers’ identification with fashion influencers have an impact on their purchase intention towards the fashion products the influencer endorses. Methodology: This thesis uses an abductive research approach, together with qualitative methods to fulfill its aim and answer the research questions. The empirical data were gathered through an in-depth interview which eight participants, sampled by purposive sampling ,answered. Subsequently, the interviews were transcribed, coded, and analysed using thematic analysis. The main limitations of the research are the facts that the participants live in the same area and are approximately the same age. Thusly, the transferability of the results mightbe complicated. Findings: The findings of the analysis point out that followers/consumers’ engage with fashion influencers at an interpersonal level, through realization of sharing similar interests and values. Participants have also shown a desire of becoming even more similar to their favourite influencers by altering the beliefs they have in common with them. From the perspective of the theory of Homophily-Heterophily, the engagement between followers and influencers is affected by both, value and status homophily. On the other hand, it has also been demonstrated that identification influences followers/consumers’ purchase intention towards the fashion products influencers endorse on Instagram. Contributions: This paper contributes to the academia by investigating followers/consumers’ purchase intention through the theories of Identification and Homophily-Heterophily. Additionally, the context of Instagram, as well as, the qualitative nature of this investigation are novelties on this field of study. Fashion companies and influencers can also benefit from the results of this research, since they would be able of creating better collaborations.

The purposes of this thesis are to: (a) provide a review of previous research on the economic value of geological information, including the identification of important lessons from such work: and (b) assess the current use and non-use of geological information in Swedish municipalities. The thesis consists of three papers all related to the assessment or adoption of geological information.Paper I provides a review of previous research on the economic value of geological information and other earth observations as well as related products, services and infrastructure. Furthermore, the paper identifies important lessons and issues that require increased attention in future research. The review of prior research shows that significant economic benefits are attached to the use of geological information. The value of geological information has typically been measured in terms of avoided costs. Still, it is difficult to compare results across studies since they differ in scope and make alternative assumptions concerning which sectors to cover. Furthermore, previous research is not uniform in its treatment of potential (rather than only existing) users, and it employs varying conceptions of avoided costs. The paper concludes that future research should devote more attention to the public and experience good characteristics of this type of information, thus highlighting the preconditions for information adoption as well as addressing the role of potential users. A number of specific methodological challenges also deserve further scrutiny in future research, such as the use of discount rates and benefit-transfer approaches in the empirical context of geological information.Based on the results of Paper I it is important to also analyze what, beyond technological advances, influences the adoption of geological information. Paper II and III investigate the determinants of adopting geological information in the public sector with an emphasis on Swedish municipalities. Paper II contributes to the literature by theoretical explanations and empirical findings on individual and organizational effects influencing the adoption of geological information. In this paper an information adoption model is proposed and tested against data collected from 677 officials in Swedish municipalities. The model is estimated using linear probability (LPM) and instrument variable generalized method of moment (IV-GMM) approaches. The results suggest that perceived advantages have the largest effect on the likelihood of adopting geological information, but also follow-up education (motivation) and gender are found to affect adoption behavior. In addition, the results also indicate a group effect within working units. Some implications of the findings and future research areas are discussed.Paper III further investigates the adoption of geological information in the public sector by considering social effects (collegial advice), and whether the information is jointly adopted with related information. The related information considered in this paper is other geoinformation such as map data, demographic information concerning population or building information. The empirical analysis builds on the survey sent out to officials at Swedish municipalities. The information adoption model is estimated using probit and bivariate probits. The results suggest that the adoption of geological and related information is a joint and complementary decision. It is also found that collegial advice, perceived skills from education, motivation to adopt, perceived advantage, gender and working unit affect the likelihood of adopting geological information.

The influence of electronic word of mouth (eWOM) on consumers’ purchase intentions has long been known. However, the emergence of social media has brought a new perspective to eWOM through enabling users to communicate with their existing networks on the Internet. On social media, conversely to the other online platforms, users are able to exchange their opinions and experiences about products or services with familiar people, which refers to people who they already know such as friends and acquaintances. This new way of eWOM has the potential for greater impact on consumers. Therefore, the aim of this research is to examine the influence of eWOM in social media on consumers’ purchase intentions. To do so, the research in this thesis involved two major phases. In the first phase, in order to explore the determinants of eWOM information on social media which influences consumers’ purchase intentions, a theoretical model was developed based on the integration of Information Adoption Model (IAM) and related components of Theory of Reasoned Action (TRA). The new model, which is named as Information Acceptance Model (IACM), was validated through structural equation modelling (SEM) based on surveys of 384 social media users in the UK. The results have highlighted that quality, credibility, usefulness and adoption of information, needs of information and attitude towards information are the key factors for eWOM in social media which influence consumers’ purchase intentions. Furthermore, to provide better understanding of the influence of eWOM on social media, the second phase of this research was designed as a comparative study. To explore whether the eWOM between familiar people on social media or the eWOM between anonymous people on other online platforms was more influential on consumers’ purchase intentions, the data collected through survey was reanalysed with a different perspective; and a comparison was conducted based on multiple regression analysis. The results have revealed significant differences and found anonymous reviews to be more influential on consumers’ purchase intentions than friends’ recommendations on social media. However, since these results were contrary to expectations, 10 in-depth interviews were also administered to enlighten the insightful results found through the survey. The interview findings uncovered the survey results. Information quantity, information readiness, detailed information, and dedicated information were discovered as the factors which make online reviews superior than friends’ recommendations in terms of the influence of eWOM. This research contributes to theoretical implications through its validated model and found key dimensions. The research model, IACM, brings a new approach to information adoption by extending IAM and provides new insights to researchers who study Information Systems (IS). In addition, the model highlights the information adoption process as an antecedent of behavioural intention, which is a very important finding for the related literature. Future studies can build new models through considering this relationship between information adoption process and behavioural intention. Moreover, the second phase of this research provides new constructs for future studies through its qualitative findings. The findings reached through in-depth interviews, which explain why consumers prefer anonymous online reviews, can either be tested as components of new theories and models or they can be tested as inclusion of existing theories and models. Both types have potential to provide valuable results for the literature. On the other hand, in terms of practicality, this research provides marketers with a frame of reference to understand the influence of eWOM in social media on consumers’ purchase intentions. Both the contextual and the comparative studies in this research offer valuable insights for marketers; marketers thus can develop better strategies for marketing on social media.

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