<p>Cybercrime and online scams are rampant in today’s tech-savvy world. In the past, scammers relied heavily on emails to contact potential victims but today, the presence and widespread usage of social networking platforms and e-commerce businesses has increased the availability of potential victims and made them easily accessible. It could be assumed that since unsuspecting users seek various products or services online - rentals, booking trips, seeking jobs, dating, it makes them easy targets for scammers yet, it is not just individual users who suffer from fraud, but organizations and institutions as well. A study at the Bank of America Merrill Lynch Global Research found that cybercrime costs the global economy up to approximately 540 billion euros annually. There is plenty of research on the technical measures that individuals and organizations may take to prevent themselves from falling prey to fraudsters, however, research trends in the recent past have shifted towards analyzing the human element present in the scenarios. Researchers have argued that identifying the underlying psychological and sociological factors used by fraudsters could help tackle the very root cause of such fraudulent attacks. While there exists some research focusing on the experiences and psychology of victims of these attacks as well as the countermeasures that can be taken to protect them from such attacks, there is little research on the psychology and motivation of those who commit online fraud. This study aims to identify the psychological factors that affect the predilection of scammers to commit online fraud.</p>

The thesis focuses on Kuhlthau's Information Search Process Model. Firstly, the author explains Kuhlthau's model of information retrieval and seeking meaning of information from user's perspective. Results of the model are the uncertainty principle and mediation - findings which change our view of library services. In the second part of the thesis, the author introduces other research texts and manuals about writing a scientific text. She pays special attention to Jadwiga Šanderová's comprehensive manual which is called How to read and write a scientific text in social sciences, and to stylistics research text by Světla Čmejrková et al. called How to write down a scientific text. Thirdly, the author evaluates the survey which verifies Kuhlthau's model in the environment of the Czech Republic. The survey has taken place among postgraduate students, teachers and scientists from chosen universities in the Czech Republic

This dissertation provides a context-specific theory to understand how city cultural organizations can best use digital stories and impression management to create a desired image or enhance public perceptions. The generated model describes how a digital storytelling information system can affect user impressions of a city and the outcomes of using such a system. The study responds to a growing interest among cultural organizations regarding how to use emerging information technologies in the communication of cultural content. An interpretive case study was conducted on the “Love Your City, Share Your Stories” digital storytelling initiative in Hamilton, Canada. Data collection included 95 one-on-one interviews with the general public, the gathering of documents, and the researcher’s personal observations of participants during the data collection process. A systematic approach of data analysis was utilized to capture participant opinions and visualize this information in a data structure. Theories from the literature on information systems, organizational impression management, and narrative transportation ground the study. Findings suggest that a digital storytelling information system can be a viable tool to share city cultural heritage information and positively affect people’s perceptions of a city. The overall outcome of creating/maintaining a positive favorable impression is shaped through a layered experience of benefits by the users. Users are first personally engaged and informed about a city’s cultural heritage (primary benefits), and then they are influenced and inspired positively towards the city (secondary benefits). Findings show that technology characteristics (i.e., media quality and story quality) are critical factors affecting outcomes of use, and that user characteristics and context of use both moderate this relationship. This research provides theoretical insights and practical recommendations for researchers and city cultural organizations wishing to explore the utilization of newer information technologies, such as digital storytelling, for impression management. / Thesis / Doctor of Philosophy (PhD) / This dissertation aims to understand how city cultural organizations can best use digital stories and impression management to enhance public perceptions. The generated model describes how a digital storytelling information system can affect user impressions of a city. The study responds to a growing interest among cultural organizations regarding how to use emerging information technologies in the communication of cultural content. Findings suggest that a digital storytelling information system can be a viable tool to share city cultural heritage information and positively affect people’s perceptions of a city. Findings show that technology characteristics (i.e., media quality and story quality) are critical factors affecting outcomes of use and that user characteristics and context of use both moderate this relationship. Theoretical insights and practical recommendations are provided for researchers and city cultural organizations wishing to explore the utilization of newer information technologies, such as digital storytelling, for impression management.

<p dir="ltr">Asian international students face various challenges and emotional issues during the process of acculturation, often finding it difficult to truly connect with the domestic culture. Current research often focuses on interactions and adaptation within the international student community, with little mention of how international students communicate with domestic students. Especially in the digital age, the ways people acquire information and communicate have evolved significantly from the past. This research takes into account the current era's context, seeks to understand the current status and needs of new Asian international students and propose further assistance guidelines. It employed interviews and co-design activities to delve into the issues from the perspective of Asian international students, encouraging them to integrate into the domestic culture. The findings suggest that new Asian students encounter similar challenges and utilize various strategies, with a view to fostering social connections with domestic students in future platforms.</p>

This study involved a qualitative investigation of consulting engineers' information needs and information-seeking behaviour within the context of their project-related work roles and tasks. The research design includes a study of various information behaviour models, a systematic review of the subject literature and the exploration of relevant qualitative research methods. Data was collected through time-line interviews. The findings show how consulting engineers' work roles and tasks determine their information needs during various engineering project stages. These factors also determine the use of various sources during information seeking. Consulting engineers use a variety of information sources but rely mainly on interpersonal communication to gather information. Digital cameras are used by consulting engineers to record progress in a project. They also use Internet technologies such as email and FTP sites to communicate project related information. Recommendations were put forward for the development of an Internet-based information service for consulting engineers. / Information science / M.Inf.

Un atout majeur des organisations consiste en leur capacité à créer et exploiter l’information et les connaissances, capacité déterminée entre autres par les comportements informationnels. Chargés de décisions stratégiques, tactiques et opérationnelles, les cadres intermédiaires sont au cœur du processus de création des connaissances, et leurs comportements informationnels doivent être soutenus par des systèmes d’information. Toutefois, leurs comportements informationnels sont peu documentés. La présente recherche porte sur la modélisation des comportements informationnels de cadres intermédiaires d’une organisation municipale. Plus spécifiquement, elle examine comment ces cadres répondent à leurs besoins d’information courante dans le contexte de leurs activités de gestion, c’est-à-dire dans leur environnement d’utilisation d’information. L’étude répond aux questions de recherche suivantes : (1) Quelles sont les situations problématiques auxquelles font face les cadres intermédiaires municipaux ? (2) Quels sont les besoins informationnels exprimés par les cadres intermédiaires municipaux lors de situations problématiques ? (3) Quelles sont les sources d’information qui soutiennent les comportements informationnels des cadres intermédiaires municipaux ? Cette recherche descriptive s’inscrit dans une approche qualitative. Les 21 cadres intermédiaires ayant participé à l’étude proviennent de deux arrondissements d’une municipalité québécoise fusionnée en 2002. Les modes de collecte de données sont l’entrevue en profondeur en personne et l’observation directe auprès de ces cadres, et la collecte de documentation pertinente. L’incident critique est utilisé comme technique de collecte de données et comme unité d’analyse. Les données recueillies font l’objet d’une analyse de contenu qualitative basée sur la théorisation ancrée. Les résultats indiquent que les rôles de gestion proposés dans les écrits pour les cadres supérieurs s’appliquent aussi aux cadres intermédiaires, bien que le rôle conseil ressorte comme étant particulier à ces derniers. Ceux-ci ont des responsabilités de gestion aux trois niveaux d’intervention opérationnel, tactique et stratégique, bien qu’ils œuvrent davantage au plan tactique. Les situations problématiques dont ils sont chargés s’inscrivent dans l’environnement d’utilisation d’information constitué des composantes suivantes : leurs rôles et responsabilités de gestion et le contexte organisationnel propre à une municipalité en transformation. Les cadres intermédiaires ont eu à traiter davantage de situations nouvelles que récurrentes, caractérisées par des sujets portant principalement sur les ressources matérielles et immobilières ou sur des aspects d’intérêt juridique, réglementaire et normatif. Ils ont surtout manifesté des besoins pour de l’information de nature processuelle et contextuelle. Pour y répondre, ils ont consulté davantage de sources verbales que documentaires, même si le nombre de ces dernières reste élevé, et ont préféré utiliser des sources d’information internes. Au plan théorique, le modèle de comportement informationnel proposé pour les cadres intermédiaires municipaux enrichit les principales composantes du modèle général d’utilisation de l’information (Choo, 1998) et du modèle d’environnement d’utilisation d’information (Taylor, 1986, 1991). L’étude permet aussi de préciser les concepts d’« utilisateur » et d’« utilisation de l’information ». Au plan pratique, la recherche permet d’aider à la conception de systèmes de repérage d’information adaptés aux besoins des cadres intermédiaires municipaux, et aide à évaluer l’apport des systèmes d’information archivistiques à la gestion de la mémoire organisationnelle. / The success of organizations lies most often in their capacity to create and use information and knowledge, this capacity being determined among other things by information behaviours. In charge of strategic, tactical and operational decisions, middle managers stand at a crossroad in the knowledge creation process within organizations. Their information behaviours must be supported by information systems. However few studies explore these information behaviours. This research project aims at understanding how municipal middle managers meet their information needs according to their specific information use environment. It describes and models their information needs and uses in management situations and examines how they are supported by information sources. More specifically, the study examines three research questions : (1) What problem situations do municipal middle managers encounter in their management tasks ? (2) What information needs do they express in the context of their problem situations ? (3) What information sources support their information behaviours ? This descriptive study is based on a qualitative approach. The respondents are twenty-one middle managers, all reporting to two boroughs in a Quebec municipality that was merged in 2002. Data collection techniques used are in-depth face-to-face interviews with and direct observations of middle managers, and relevant documentation related to problem situations. Critical incident was used both as a technique interview and as a unit of analysis. Data were subjected to content analysis based on grounded theory. Results show that middle managers’ roles are as diversified as those of top managers. However middle managers have a large “counseling” role. Their managerial responsibilities are mainly at a tactical level, but do not exclude operational and strategic level tasks. The problem situations of middle managers are closely linked to information use environment components such as : their managerial roles and responsibilities, and the organizational context characterizing a municipality undergoing major reorganization. Most problem situations encountered by middle managers in this context were new patterns, and related mainly to legal and prescriptive matters or physical resources. Middle managers’ information needs show the importance of organizational processes and context in the resolution of problem situations. To answer those needs, they used mainly internal information sources. Verbal information sources were more used than printed ones (documentation). At a theoretical level, we found that our middle managers’ information behaviour model supports and complements the two models our study relies on : the general model of information use (Choo, 1998) and the information use environment model (Taylor, 1986, 1991). Concepts such as “user” and “information use” are also refined from the users perspective. At a practical level, this study contributes to the design of information retrieval systems best suited to satisfy the information needs of municipal middle managers. It also assesses the contribution of records information systems to the management of organizational memory. / Conseil de recherches en sciences humaines du Canada (CRSH), Fonds québécois de recherche sur la société et la culture (FQRSC), Manulife Financial Corporation, Fondation J.A. DeSève, Faculté des études supérieures de l’Université de Montréal (bourse de fin d’études), EBSI/Faculté des études supérieures de l’Université de Montréal (bourses conjointes)

Depuis quelques années, les statistiques indiquent une croissance exponentielle de l’incidence de certaines infections transmissibles sexuellement chez les jeunes adultes. Certaines enquêtes témoignent en outre des comportements peu responsables en matière de santé sexuelle chez cette population, bien que l’offre d’information sur les conséquences de tels comportements soit importante et diversifiée. Par ailleurs, le comportement informationnel de cette population en matière de santé sexuelle demeure peu documenté. La présente étude porte sur le comportement informationnel de jeunes adultes québécois en matière de santé sexuelle. Plus spécifiquement, elle répond aux quatre questions de recherche suivantes : (1) Quelles sont les situations problématiques auxquelles les jeunes adultes sont confrontés en santé sexuelle?, (2) Quels sont les besoins informationnels exprimés par les jeunes adultes lors de ces situations problématiques?, (3) Quels sont les processus et les sources d’information qui soutiennent la résolution de ces besoins informationnels? et (4) Quelle est l’utilisation de l’information trouvée? Cette recherche descriptive a utilisé une approche qualitative. Le milieu retenu est l’Université de Montréal pour deux raisons : il s’agit d’un milieu cognitivement riche qui fournit un accès sur place à des ressources en santé sexuelle. Les huit jeunes adultes âgés de 18 à 25 ans qui ont pris part à cette étude ont participé à une entrevue en profondeur utilisant la technique de l’incident critique. Chacun d’entre eux a décrit une situation problématique par rapport à sa santé sexuelle et les données recueillies ont été l’objet d’une analyse de contenu basée sur la théorisation ancrée. Les résultats indiquent que les jeunes adultes québécois vivent des situations problématiques relatives à l’aspect physique de leur santé sexuelle qui peuvent être déclenchées par trois types d’éléments : un événement à risques, un symptôme physique subjectif et de l’information acquise passivement. Ces situations problématiques génèrent trois catégories de besoins informationnels : l’état de santé actuel, les conséquences possibles et les remèdes. Pour répondre à ces besoins, les participants se sont tournés en majorité vers des sources professionnelles, personnelles et verbales. La présence de facteurs contextuels, cognitifs et affectifs a particularisé leur processus de recherche d’information en modifiant les combinaisons des quatre activités effectuées, soit débuter, enchaîner, butiner et différencier. L’automotivation et la compréhension du problème représentent les deux principales utilisations de l’information. D’un point de vue théorique, les résultats indiquent que le modèle général de comportement informationnel de Choo (2006), le modèle d’environnement d’utilisation de l’information de Taylor (1986, 1991) et le modèle d’activités de recherche d’information d’Ellis (1989a, 1989b, 2005) peuvent être utilisés dans le contexte personnel de la santé sexuelle. D’un point de vue pratique, cette étude ajoute aux connaissances sur les critères de sélection des sources d’information en matière de santé sexuelle. / Over the pasts few years, statistics have indicated an exponential growth in the incidence of some sexually transmitted diseases among young adults. Certain studies suggest less-than-responsible sexual health behaviours among this population, despite readily available information, from diverse sources, on the consequences of such behaviours. Furthermore, the sexual health information behaviour of this population has not yet been well documented. This study focuses on the sexual health information behaviour of a group of young Quebec adults. More specifically, it answers the following four research questions: (1) What are the problematic situations faced by young adults in matters of sexual health?; (2) What are the information needs arising from these problematic situations?; (3) What are the information search processes and sources used to answer these information needs? and (4) Once found, how was this information used? This descriptive research used a qualitative approach. The Université de Montréal was chosen as the research environment for two reasons: it is a cognitively rich milieu that offers on-site access to sexual health resources. Eight young adults aged from 18 to 25 participated in an in-depth interview using the critical incident technique. Each participant described a problematic situation with respect to their sexual health and the resulting data were analysed using a grounded theory based method. Results indicate that young Quebec adults are faced with problematic situations with respect to physical aspects of their sexual life that can be triggered by three types of elements: a risky event, a subjective physical symptom or passively acquired information. These problematic situations generate three categories of information needs: the actual health state, potential consequences and cures. To answer these needs, a majority of participants turned to professional, personal and verbal sources. Situational, cognitive, and affective factors differentiated their information search process with different combinations of four information search activities: starting, chaining, browsing, and differentiating. Self-motivation and understanding of the problem represent the two main information uses. At a theoretical level, results indicates that the general information model (Choo 2006), the information use environment model (Taylor 1986, 1991) and the information search activities (Ellis 1989a, 1989b, 2005) can be used in the personal context of sexual health. At a practical level, this study enriches the knowledge of the criteria for selecting information sources in the context of sexual health.

<div>This thesis combines human and machine intelligence for consensus decision-making, and it contains four interrelated research areas. Before presenting the four research areas, this thesis presents a literature review on decision-making using two criteria: trust and risk. The analysis involves studying the individual and the multi-stakeholder decision-making. Also, it explores the relationship between trust and risk to provide insight on how to apply them when making any decision. This thesis presents a grouping procedure of the existing trust-based multi-stakeholder decision-making schemes by considering the group decision-making process and models. In the first research area, this thesis presents the foundation of building multi-stakeholder consensus decision-making (MSCDM). This thesis describes trust-based multi-stakeholder decision-making for water allocation to help the participants select a solution that comes from the best model. Several criteria are involved when deciding on a solution such as trust, damage, and benefit. This thesis considers Jain's fairness index as an indicator of reaching balance or equality for the stakeholder's needs. The preferred scenario is when having a high trust, low damages and high benefits. The worst scenario involves having low trust, high damage, and low benefit. The model is dynamic by adapting to the changes over time. The decision to select is the solution that is fair for almost everyone. In the second research area, this thesis presents a MSCDM, which is a generic framework that coordinates the decision-making rounds among stakeholders based on their influence toward each other, as represented by the trust relationship among them. This thesis describes the MSCDM framework that helps to find a decision the stakeholders can agree upon. Reaching a consensus decision might require several rounds where stakeholders negotiate by rating each other. This thesis presents the results of implementing MSCDM and evaluates the effect of trust on the consensus achievement and the reduction in the number of rounds needed to reach the final decision. This thesis presents Rating Convergence in the implemented MSCDM framework, and such convergence is a result of changes in the stakeholders' rating behavior in each round. This thesis evaluates the effect of trust on the rating changes by measuring the distance of the choices made by the stakeholders. Trust is useful in decreasing the distances. In the third research area, this thesis presents Rating Convergence in the implemented MSCDM framework, and such convergence is a result of changes in stakeholders' rating behavior in each round. This thesis evaluates the effect of trust on the rating changes by measuring the perturbation in the rating matrix. Trust is useful in increasing the rating matrix perturbation. Such perturbation helps to decrease the number of rounds. Therefore, trust helps to increase the speed of agreeing upon the same decision through the influence. In the fourth research area, this thesis presents Rating Aggregation operators in the implemented MSCDM framework. This thesis addresses the need for aggregating the stakeholders' ratings while they negotiate on the round of decisions to compute the consensus achievement. This thesis presents four aggregation operators: weighted sum (WS), weighted product (WP), weighted product similarity measure (WPSM), and weighted exponent similarity measure (WESM). This thesis studies the performance of those aggregation operators in terms of consensus achievement and the number of rounds needed. The consensus threshold controls the performance of these operators. The contribution of this thesis lays the foundation for developing a framework for MSCDM that facilitates reaching the consensus decision by accounting for the stakeholders' influences toward one another. Trust represents the influence.</div>

Un atout majeur des organisations consiste en leur capacité à créer et exploiter l’information et les connaissances, capacité déterminée entre autres par les comportements informationnels. Chargés de décisions stratégiques, tactiques et opérationnelles, les cadres intermédiaires sont au cœur du processus de création des connaissances, et leurs comportements informationnels doivent être soutenus par des systèmes d’information. Toutefois, leurs comportements informationnels sont peu documentés. La présente recherche porte sur la modélisation des comportements informationnels de cadres intermédiaires d’une organisation municipale. Plus spécifiquement, elle examine comment ces cadres répondent à leurs besoins d’information courante dans le contexte de leurs activités de gestion, c’est-à-dire dans leur environnement d’utilisation d’information. L’étude répond aux questions de recherche suivantes : (1) Quelles sont les situations problématiques auxquelles font face les cadres intermédiaires municipaux ? (2) Quels sont les besoins informationnels exprimés par les cadres intermédiaires municipaux lors de situations problématiques ? (3) Quelles sont les sources d’information qui soutiennent les comportements informationnels des cadres intermédiaires municipaux ? Cette recherche descriptive s’inscrit dans une approche qualitative. Les 21 cadres intermédiaires ayant participé à l’étude proviennent de deux arrondissements d’une municipalité québécoise fusionnée en 2002. Les modes de collecte de données sont l’entrevue en profondeur en personne et l’observation directe auprès de ces cadres, et la collecte de documentation pertinente. L’incident critique est utilisé comme technique de collecte de données et comme unité d’analyse. Les données recueillies font l’objet d’une analyse de contenu qualitative basée sur la théorisation ancrée. Les résultats indiquent que les rôles de gestion proposés dans les écrits pour les cadres supérieurs s’appliquent aussi aux cadres intermédiaires, bien que le rôle conseil ressorte comme étant particulier à ces derniers. Ceux-ci ont des responsabilités de gestion aux trois niveaux d’intervention opérationnel, tactique et stratégique, bien qu’ils œuvrent davantage au plan tactique. Les situations problématiques dont ils sont chargés s’inscrivent dans l’environnement d’utilisation d’information constitué des composantes suivantes : leurs rôles et responsabilités de gestion et le contexte organisationnel propre à une municipalité en transformation. Les cadres intermédiaires ont eu à traiter davantage de situations nouvelles que récurrentes, caractérisées par des sujets portant principalement sur les ressources matérielles et immobilières ou sur des aspects d’intérêt juridique, réglementaire et normatif. Ils ont surtout manifesté des besoins pour de l’information de nature processuelle et contextuelle. Pour y répondre, ils ont consulté davantage de sources verbales que documentaires, même si le nombre de ces dernières reste élevé, et ont préféré utiliser des sources d’information internes. Au plan théorique, le modèle de comportement informationnel proposé pour les cadres intermédiaires municipaux enrichit les principales composantes du modèle général d’utilisation de l’information (Choo, 1998) et du modèle d’environnement d’utilisation d’information (Taylor, 1986, 1991). L’étude permet aussi de préciser les concepts d’« utilisateur » et d’« utilisation de l’information ». Au plan pratique, la recherche permet d’aider à la conception de systèmes de repérage d’information adaptés aux besoins des cadres intermédiaires municipaux, et aide à évaluer l’apport des systèmes d’information archivistiques à la gestion de la mémoire organisationnelle. / The success of organizations lies most often in their capacity to create and use information and knowledge, this capacity being determined among other things by information behaviours. In charge of strategic, tactical and operational decisions, middle managers stand at a crossroad in the knowledge creation process within organizations. Their information behaviours must be supported by information systems. However few studies explore these information behaviours. This research project aims at understanding how municipal middle managers meet their information needs according to their specific information use environment. It describes and models their information needs and uses in management situations and examines how they are supported by information sources. More specifically, the study examines three research questions : (1) What problem situations do municipal middle managers encounter in their management tasks ? (2) What information needs do they express in the context of their problem situations ? (3) What information sources support their information behaviours ? This descriptive study is based on a qualitative approach. The respondents are twenty-one middle managers, all reporting to two boroughs in a Quebec municipality that was merged in 2002. Data collection techniques used are in-depth face-to-face interviews with and direct observations of middle managers, and relevant documentation related to problem situations. Critical incident was used both as a technique interview and as a unit of analysis. Data were subjected to content analysis based on grounded theory. Results show that middle managers’ roles are as diversified as those of top managers. However middle managers have a large “counseling” role. Their managerial responsibilities are mainly at a tactical level, but do not exclude operational and strategic level tasks. The problem situations of middle managers are closely linked to information use environment components such as : their managerial roles and responsibilities, and the organizational context characterizing a municipality undergoing major reorganization. Most problem situations encountered by middle managers in this context were new patterns, and related mainly to legal and prescriptive matters or physical resources. Middle managers’ information needs show the importance of organizational processes and context in the resolution of problem situations. To answer those needs, they used mainly internal information sources. Verbal information sources were more used than printed ones (documentation). At a theoretical level, we found that our middle managers’ information behaviour model supports and complements the two models our study relies on : the general model of information use (Choo, 1998) and the information use environment model (Taylor, 1986, 1991). Concepts such as “user” and “information use” are also refined from the users perspective. At a practical level, this study contributes to the design of information retrieval systems best suited to satisfy the information needs of municipal middle managers. It also assesses the contribution of records information systems to the management of organizational memory. / Conseil de recherches en sciences humaines du Canada (CRSH), Fonds québécois de recherche sur la société et la culture (FQRSC), Manulife Financial Corporation, Fondation J.A. DeSève, Faculté des études supérieures de l’Université de Montréal (bourse de fin d’études), EBSI/Faculté des études supérieures de l’Université de Montréal (bourses conjointes)

Depuis quelques années, les statistiques indiquent une croissance exponentielle de l’incidence de certaines infections transmissibles sexuellement chez les jeunes adultes. Certaines enquêtes témoignent en outre des comportements peu responsables en matière de santé sexuelle chez cette population, bien que l’offre d’information sur les conséquences de tels comportements soit importante et diversifiée. Par ailleurs, le comportement informationnel de cette population en matière de santé sexuelle demeure peu documenté. La présente étude porte sur le comportement informationnel de jeunes adultes québécois en matière de santé sexuelle. Plus spécifiquement, elle répond aux quatre questions de recherche suivantes : (1) Quelles sont les situations problématiques auxquelles les jeunes adultes sont confrontés en santé sexuelle?, (2) Quels sont les besoins informationnels exprimés par les jeunes adultes lors de ces situations problématiques?, (3) Quels sont les processus et les sources d’information qui soutiennent la résolution de ces besoins informationnels? et (4) Quelle est l’utilisation de l’information trouvée? Cette recherche descriptive a utilisé une approche qualitative. Le milieu retenu est l’Université de Montréal pour deux raisons : il s’agit d’un milieu cognitivement riche qui fournit un accès sur place à des ressources en santé sexuelle. Les huit jeunes adultes âgés de 18 à 25 ans qui ont pris part à cette étude ont participé à une entrevue en profondeur utilisant la technique de l’incident critique. Chacun d’entre eux a décrit une situation problématique par rapport à sa santé sexuelle et les données recueillies ont été l’objet d’une analyse de contenu basée sur la théorisation ancrée. Les résultats indiquent que les jeunes adultes québécois vivent des situations problématiques relatives à l’aspect physique de leur santé sexuelle qui peuvent être déclenchées par trois types d’éléments : un événement à risques, un symptôme physique subjectif et de l’information acquise passivement. Ces situations problématiques génèrent trois catégories de besoins informationnels : l’état de santé actuel, les conséquences possibles et les remèdes. Pour répondre à ces besoins, les participants se sont tournés en majorité vers des sources professionnelles, personnelles et verbales. La présence de facteurs contextuels, cognitifs et affectifs a particularisé leur processus de recherche d’information en modifiant les combinaisons des quatre activités effectuées, soit débuter, enchaîner, butiner et différencier. L’automotivation et la compréhension du problème représentent les deux principales utilisations de l’information. D’un point de vue théorique, les résultats indiquent que le modèle général de comportement informationnel de Choo (2006), le modèle d’environnement d’utilisation de l’information de Taylor (1986, 1991) et le modèle d’activités de recherche d’information d’Ellis (1989a, 1989b, 2005) peuvent être utilisés dans le contexte personnel de la santé sexuelle. D’un point de vue pratique, cette étude ajoute aux connaissances sur les critères de sélection des sources d’information en matière de santé sexuelle. / Over the pasts few years, statistics have indicated an exponential growth in the incidence of some sexually transmitted diseases among young adults. Certain studies suggest less-than-responsible sexual health behaviours among this population, despite readily available information, from diverse sources, on the consequences of such behaviours. Furthermore, the sexual health information behaviour of this population has not yet been well documented. This study focuses on the sexual health information behaviour of a group of young Quebec adults. More specifically, it answers the following four research questions: (1) What are the problematic situations faced by young adults in matters of sexual health?; (2) What are the information needs arising from these problematic situations?; (3) What are the information search processes and sources used to answer these information needs? and (4) Once found, how was this information used? This descriptive research used a qualitative approach. The Université de Montréal was chosen as the research environment for two reasons: it is a cognitively rich milieu that offers on-site access to sexual health resources. Eight young adults aged from 18 to 25 participated in an in-depth interview using the critical incident technique. Each participant described a problematic situation with respect to their sexual health and the resulting data were analysed using a grounded theory based method. Results indicate that young Quebec adults are faced with problematic situations with respect to physical aspects of their sexual life that can be triggered by three types of elements: a risky event, a subjective physical symptom or passively acquired information. These problematic situations generate three categories of information needs: the actual health state, potential consequences and cures. To answer these needs, a majority of participants turned to professional, personal and verbal sources. Situational, cognitive, and affective factors differentiated their information search process with different combinations of four information search activities: starting, chaining, browsing, and differentiating. Self-motivation and understanding of the problem represent the two main information uses. At a theoretical level, results indicates that the general information model (Choo 2006), the information use environment model (Taylor 1986, 1991) and the information search activities (Ellis 1989a, 1989b, 2005) can be used in the personal context of sexual health. At a practical level, this study enriches the knowledge of the criteria for selecting information sources in the context of sexual health.