Kai J Jonas
Biographic Data
| ID | 167288 |
|---|---|
| NAME | Kai J Jonas |
| GIVEN NAMES | Kai J |
| FAMILY NAME | Jonas |
| SIGNATURE | JONAS K J |
| AFFILIATIONS | Maastricht University |
| VERIFIED | No |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 68 |
| AUTHOR COUNT | 25 |
| EDITOR COUNT | 2 |
| FIRST PUBLICATION YEAR | 2001 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 5 |
European Men-Who-Have-Sex-With-Men and Trans People Internet Survey (Emis-2024)
Men-who-have-sex-with-men (MSM), as well as transgender and non-binary individuals, continue to face a disproportionate burden of stigma, mental health challenges, HIV, and other sexually transmitted infections. To address their needs, public health planners require reliable and comparable data. Monitoring behaviours in these populations also supports the evaluation of health policies. The European-MSM-Internet-Survey (EMIS-2024) builds on our in…
The role of fear as a barrier and facilitator to antiretroviral therapy initiation in Indonesia
Initiating antiretroviral therapy (ART) in Indonesia poses major challenges, with limited studies on specific ART initiation barriers and facilitators. Using a socioecological approach, we explored, through semi-structured interviews, the perspectives of 67 participants: 17 people with HIV not (yet) on ART, 30 people with HIV on treatment, and 20 HIV service providers (HSPs). Fears emerged as pervasive barriers to initiation encompassing, at the …
A Syndemic Clustering of Adversities on Suicide Risk among YMSM Living with HIV in Bangkok
This study investigated the clustering of psychosocial adversities and their synergistic effect with depression on suicidality in a 12-month prospective cohort (N = 214) of YMSM living with HIV in Bangkok, Thailand. Latent class analysis identified subgroups with distinct combinations of adversities, including bullying, intimate partner violence, substance use, HIV stigma, low social support, histories of sex work, and below-income status. Signif…
Determinants of Return to Active Use Amongst Previously Rehabilitated Users of Nyaope With a History of Multiple Rehabilitations
Returning to active use of nyaope is one of the most problematic issues amongst previously rehabilitated persons who use this substance in South Africa. To understand this aspect in-depth, the study sought to explore the determinants of return to active use from those who have been rehabilitated multiple times. An exploratory qualitative design was utilised for this study. A semi-structured interview guide was developed, and face-to-face intervie…
Patterns of Chemsex Substance Use and Its Association with HIV Transmission Risk Among Men Who Have Sex with Men in Thailand
Sexualized substance use or “chemsex” may contribute to the HIV epidemic among men who have sex with men (MSM) in Thailand. Specific patterns of chemsex use may be associated with different HIV/STI transmission risks. We examined typologies and correlates of sexualized substance use among a sample of high-risk MSM ( n = 532) who had attended a private sex party or circuit party in the past three years using latent class analysis. Multinomial regr…
Agency and Upgrading in Ethiopia's Global Production Networks
Ethiopia's quest for export-led industrialization through manufacturing is seen by many development economists as a test case for the larger potential of developmental states in Africa to benefit from global value chains. In recent years this quest has run into difficulties, prompting other scholars to question the social and economic advantages of this strategy. This article takes a novel approach to this question by examining the rise and fall …
Does Investor Origin Matter? The Multidimensional Well-Being and Mental Health of Female Workers in Foreign-Owned Flower Farms and Apparel Factories in Ethiopia
Investors from various origins in FDI employ a large number of female workers in Ethiopia, but one of the areas where there is lack of research is the well-being consequences of such jobs and whether these are uniform across investors from various origins. To address this gap, this study examined how investor origin is associated with the multidimensional well-being and mental health of female workers using survey data on 2,515 workers employed i…
PrEP in the Context of Other HIV Risk Reduction Strategies Among Men Who Have Sex with Men
The worldwide burden of HIV in transgender individuals
Introduction Transgender individuals are at risk for HIV. HIV risks are dynamic and there have been substantial changes in HIV prevention (e.g., pre-exposure prophylaxis [PrEP]). It is thus time to revisit HIV prevalence and burden among transgender individuals. The objective of this systematic review and meta-analysis was thus to examine worldwide prevalence and burden of HIV over the course of the epidemic among trans feminine and trans masculi…
Slow Uptake of PrEP
Despite the improved availability and affordability of PrEP in the Netherlands, PrEP uptake is low among men who have sex with men (MSM). To optimize uptake, it is important to identify facilitators and barriers of PrEP use. During our study period, the price of PrEP dropped significantly after generic PrEP was introduced. We investigated whether the price drop predicts PrEP uptake, alongside behavioral and demographic characteristics. Participan…
Socio-Sexual Experiences and Access to Healthcare Among Informal PrEP Users in the Netherlands
The aim of this qualitative study was to explore the experiences of informal PrEP users regarding access to PrEP and PrEP-related healthcare, community responses, sexual behavior and well-being. We interviewed 30 men who have sex with men (MSM) in semi-structured online interviews between March and August 2018. Interviews were analyzed using interpretive description. Informal PrEP users were well informed about the use of PrEP, but sometimes did …
Associations Between Dutch LGBT Hate Crime Experience, Well-Being, Trust in the Police and Future Hate Crime Reporting
LGBT-related hate crime is a conscious act of aggression against an LGBT citizen. The present research investigates associations between hate crime, psychological well-being, trust in the police and intentions to report future experiences of hate crime. A survey study was conducted among 391 LGBT respondents in the Netherlands. Sixteen percent experienced hate crime in the 12 months prior. Compared to non-victims, victims had significant lower ps…
Perceived to feel less
It's an ordinary matter’
This qualitative study focuses on youth perceptions of cyberbullying (definition, causes, consequences, and management). We also articulate how perceptions of cyberbullying among Thai youth are influenced by Thai culture, including Thai youth culture. Data were collected from 15 to 24 year-olds in Central Thailand through 22 focus group discussions (FGDs) with 4–6 participants each, as well as 26 in-depth interviews (IDIs), totaling 136 participa…
Self-Regulatory Processes in the Appraisal of Moral Courage Situations
The present research conceives of morally courageous behavior as goal-directed behavior and extends its investigation from a mere situational approach to a more comprehensive understanding including dispositional determinants related to self-regulatory processes. We tested the assumption that individual difference variables differentially affect the appraisal of the two core constituents of moral courage, namely, norm violation and risk of interv…
Regret and Counterfactual Thinking in the Face of Inevitability
Regret and counterfactual thoughts have been extensively studied in laboratory settings characterized by unlimited future options. Yet, evidence of counterfactual thought and its effects in real-life situations is scarce. The present study demonstrates the influence of regret and counterfactuals on HIV-seropositive individuals ( N = 182). Results show that HIV-specific regrets as well as counterfactuals exert negative influence on well-being. How…
Male Role Endorsement Explains Negative Attitudes Toward Lesbians and Gay Men Among Students in Mexico More Than in Germany
Anti-gay attitudes vary across cultures because the larger social context plays a role in attitude formation. Psychological correlates of these attitudes have been investigated in the United States and Europe. Endorsement of traditional gender roles has emerged from that research as a central correlate, next to religiosity and personal contact with lesbians/gay men. In a cross-sectional study, we tested whether these correlates are relevant in Me…
Religious Affiliation and Attitudes Towards Gay Men
Previous research suggests that people from some religious backgrounds hold more negative attitudes towards gay men than others do. The current research focuses on psychological variables as an alternative explanation to religious affiliation, testing whether masculinity beliefs regarding gay men and their perceived threat to one's masculinity can explain such between‐group differences in negative attitudes. With a sample of 155 male heterosexual…
When Gender Fits Self-Regulatory Preferences
Females are perceived to have less power than males. These differences in perceived power might render different self-regulatory strategies appropriate: Women should (as members of other low-power groups) care about security, whereas men should (as members of other high-power groups) strive for accomplishment. These regulatory implications of gender provide the basis for regulatory fit between individuals' gender and their regulatory focus. Highe…
Restoring Civil Societies
Thinking deadline
In everyday life, people are constantly faced with deadlines. The current research investigated whether a self‐regulatory orientation in terms of promotion and prevention focus impacts on what individuals center on when considering deadlines. Specifically, we assumed promotion focus to enhance thinking about deadline descriptions and prevention focus to enhance thinking about deadline‐related behavior, both in terms of their self‐regulatory conce…
Attitude change and social influence on the net
This article summarizes how social influence can be exerted in computer-mediated communication (CMC). It outlines research on short-term effects of CMC on attitudes and behaviour, rather than on long-term effects of social influence. The article first presents a model of three types of social influence that can be discerned in groups, representing the current state of research on social influence. Subsequently, the characteristics of CMC relevant…
Self-regulation within and between groups
Over recent years, the study of self-regulation within and between groups has burgeoned into a vibrant field of research. Classic research findings, now substantiated with process analyses, feed back into and inform self-regulation theorizing. This Special Issue presents ten empirical articles that cover a broad range of current research on self-regulation processes and phenomena within and between groups
Diskriminierung und Toleranz
Das vorliegende Buch möchte die akademische und interessierte à ffentlichkeit zu psychologischen Grundlagen und Anwendungsperspektiven von Diskriminierung und Toleranz informieren. Ausgewiesene Expertinnen und Experten berichten Ã1⁄4ber den aktuellen psychologischen Forschungsstand und beleuchten neben den Grundlagen die Ursachen und Folgen von Diskriminierungsphänomen in einer Vielfalt von sozialen Kontexten. Zudem werden Möglichkeiten der Präve…
Why some groups just feel better
The current research applied the regulatory fit hypothesis (E. T. Higgins, 2000) to the evaluation of groups, suggesting that individuals' group appraisal depends on how well the groups fit their regulatory needs. Specifically, it was predicted that higher power groups would fit and be more valued by those individuals with a promotion focus because these groups provide a better opportunity to sustain nurturance and achievement needs. Alternativel…
Why some groups just feel better
The current research applied the regulatory fit hypothesis (E. T. Higgins, 2000) to the evaluation of groups, suggesting that individuals' group appraisal depends on how well the groups fit their regulatory needs. Specifically, it was predicted that higher power groups would fit and be more valued by those individuals with a promotion focus because these groups provide a better opportunity to sustain nurturance and achievement needs. Alternativel…
Male Role Endorsement Explains Negative Attitudes Toward Lesbians and Gay Men Among Students in Mexico More Than in Germany
Anti-gay attitudes vary across cultures because the larger social context plays a role in attitude formation. Psychological correlates of these attitudes have been investigated in the United States and Europe. Endorsement of traditional gender roles has emerged from that research as a central correlate, next to religiosity and personal contact with lesbians/gay men. In a cross-sectional study, we tested whether these correlates are relevant in Me…
Religious Affiliation and Attitudes Towards Gay Men
Previous research suggests that people from some religious backgrounds hold more negative attitudes towards gay men than others do. The current research focuses on psychological variables as an alternative explanation to religious affiliation, testing whether masculinity beliefs regarding gay men and their perceived threat to one's masculinity can explain such between‐group differences in negative attitudes. With a sample of 155 male heterosexual…
Knowing how to react
Four studies tested whether social category primes did not only prime descriptions, behaviors of this respective group, and general behavioral tendencies but also specific behavioral responses toward this group. The activation (Studies 1-3) and the accomplishment of such response behavior (Study 4) were found. Study 2 showed that the activation of response behavior was based on dynamic and, thus, directional representations: Social category prime…
When Gender Fits Self-Regulatory Preferences
Females are perceived to have less power than males. These differences in perceived power might render different self-regulatory strategies appropriate: Women should (as members of other low-power groups) care about security, whereas men should (as members of other high-power groups) strive for accomplishment. These regulatory implications of gender provide the basis for regulatory fit between individuals' gender and their regulatory focus. Highe…
It's an ordinary matter’
This qualitative study focuses on youth perceptions of cyberbullying (definition, causes, consequences, and management). We also articulate how perceptions of cyberbullying among Thai youth are influenced by Thai culture, including Thai youth culture. Data were collected from 15 to 24 year-olds in Central Thailand through 22 focus group discussions (FGDs) with 4–6 participants each, as well as 26 in-depth interviews (IDIs), totaling 136 participa…
Diskriminierung und Toleranz
Das vorliegende Buch möchte die akademische und interessierte à ffentlichkeit zu psychologischen Grundlagen und Anwendungsperspektiven von Diskriminierung und Toleranz informieren. Ausgewiesene Expertinnen und Experten berichten Ã1⁄4ber den aktuellen psychologischen Forschungsstand und beleuchten neben den Grundlagen die Ursachen und Folgen von Diskriminierungsphänomen in einer Vielfalt von sozialen Kontexten. Zudem werden Möglichkeiten der Präve…
Associations Between Dutch LGBT Hate Crime Experience, Well-Being, Trust in the Police and Future Hate Crime Reporting
LGBT-related hate crime is a conscious act of aggression against an LGBT citizen. The present research investigates associations between hate crime, psychological well-being, trust in the police and intentions to report future experiences of hate crime. A survey study was conducted among 391 LGBT respondents in the Netherlands. Sixteen percent experienced hate crime in the 12 months prior. Compared to non-victims, victims had significant lower ps…
Patterns of Chemsex Substance Use and Its Association with HIV Transmission Risk Among Men Who Have Sex with Men in Thailand
Sexualized substance use or “chemsex” may contribute to the HIV epidemic among men who have sex with men (MSM) in Thailand. Specific patterns of chemsex use may be associated with different HIV/STI transmission risks. We examined typologies and correlates of sexualized substance use among a sample of high-risk MSM ( n = 532) who had attended a private sex party or circuit party in the past three years using latent class analysis. Multinomial regr…
Self-Regulatory Processes in the Appraisal of Moral Courage Situations
The present research conceives of morally courageous behavior as goal-directed behavior and extends its investigation from a mere situational approach to a more comprehensive understanding including dispositional determinants related to self-regulatory processes. We tested the assumption that individual difference variables differentially affect the appraisal of the two core constituents of moral courage, namely, norm violation and risk of interv…
Thinking deadline
In everyday life, people are constantly faced with deadlines. The current research investigated whether a self‐regulatory orientation in terms of promotion and prevention focus impacts on what individuals center on when considering deadlines. Specifically, we assumed promotion focus to enhance thinking about deadline descriptions and prevention focus to enhance thinking about deadline‐related behavior, both in terms of their self‐regulatory conce…
Attitude change and social influence on the net
This article summarizes how social influence can be exerted in computer-mediated communication (CMC). It outlines research on short-term effects of CMC on attitudes and behaviour, rather than on long-term effects of social influence. The article first presents a model of three types of social influence that can be discerned in groups, representing the current state of research on social influence. Subsequently, the characteristics of CMC relevant…
Are social equivalences ever regular
Knowing how to react
Four studies tested whether social category primes did not only prime descriptions, behaviors of this respective group, and general behavioral tendencies but also specific behavioral responses toward this group. The activation (Studies 1-3) and the accomplishment of such response behavior (Study 4) were found. Study 2 showed that the activation of response behavior was based on dynamic and, thus, directional representations: Social category prime…
Why some groups just feel better
The current research applied the regulatory fit hypothesis (E. T. Higgins, 2000) to the evaluation of groups, suggesting that individuals' group appraisal depends on how well the groups fit their regulatory needs. Specifically, it was predicted that higher power groups would fit and be more valued by those individuals with a promotion focus because these groups provide a better opportunity to sustain nurturance and achievement needs. Alternativel…
Diskriminierung und Toleranz
Das vorliegende Buch möchte die akademische und interessierte à ffentlichkeit zu psychologischen Grundlagen und Anwendungsperspektiven von Diskriminierung und Toleranz informieren. Ausgewiesene Expertinnen und Experten berichten Ã1⁄4ber den aktuellen psychologischen Forschungsstand und beleuchten neben den Grundlagen die Ursachen und Folgen von Diskriminierungsphänomen in einer Vielfalt von sozialen Kontexten. Zudem werden Möglichkeiten der Präve…
Self-regulation within and between groups
Over recent years, the study of self-regulation within and between groups has burgeoned into a vibrant field of research. Classic research findings, now substantiated with process analyses, feed back into and inform self-regulation theorizing. This Special Issue presents ten empirical articles that cover a broad range of current research on self-regulation processes and phenomena within and between groups
Restoring Civil Societies
Thinking deadline
In everyday life, people are constantly faced with deadlines. The current research investigated whether a self‐regulatory orientation in terms of promotion and prevention focus impacts on what individuals center on when considering deadlines. Specifically, we assumed promotion focus to enhance thinking about deadline descriptions and prevention focus to enhance thinking about deadline‐related behavior, both in terms of their self‐regulatory conce…
Attitude change and social influence on the net
This article summarizes how social influence can be exerted in computer-mediated communication (CMC). It outlines research on short-term effects of CMC on attitudes and behaviour, rather than on long-term effects of social influence. The article first presents a model of three types of social influence that can be discerned in groups, representing the current state of research on social influence. Subsequently, the characteristics of CMC relevant…
Religious Affiliation and Attitudes Towards Gay Men
Previous research suggests that people from some religious backgrounds hold more negative attitudes towards gay men than others do. The current research focuses on psychological variables as an alternative explanation to religious affiliation, testing whether masculinity beliefs regarding gay men and their perceived threat to one's masculinity can explain such between‐group differences in negative attitudes. With a sample of 155 male heterosexual…
When Gender Fits Self-Regulatory Preferences
Females are perceived to have less power than males. These differences in perceived power might render different self-regulatory strategies appropriate: Women should (as members of other low-power groups) care about security, whereas men should (as members of other high-power groups) strive for accomplishment. These regulatory implications of gender provide the basis for regulatory fit between individuals' gender and their regulatory focus. Highe…
Male Role Endorsement Explains Negative Attitudes Toward Lesbians and Gay Men Among Students in Mexico More Than in Germany
Anti-gay attitudes vary across cultures because the larger social context plays a role in attitude formation. Psychological correlates of these attitudes have been investigated in the United States and Europe. Endorsement of traditional gender roles has emerged from that research as a central correlate, next to religiosity and personal contact with lesbians/gay men. In a cross-sectional study, we tested whether these correlates are relevant in Me…
Regret and Counterfactual Thinking in the Face of Inevitability
Regret and counterfactual thoughts have been extensively studied in laboratory settings characterized by unlimited future options. Yet, evidence of counterfactual thought and its effects in real-life situations is scarce. The present study demonstrates the influence of regret and counterfactuals on HIV-seropositive individuals ( N = 182). Results show that HIV-specific regrets as well as counterfactuals exert negative influence on well-being. How…
Self-Regulatory Processes in the Appraisal of Moral Courage Situations
The present research conceives of morally courageous behavior as goal-directed behavior and extends its investigation from a mere situational approach to a more comprehensive understanding including dispositional determinants related to self-regulatory processes. We tested the assumption that individual difference variables differentially affect the appraisal of the two core constituents of moral courage, namely, norm violation and risk of interv…
It's an ordinary matter’
This qualitative study focuses on youth perceptions of cyberbullying (definition, causes, consequences, and management). We also articulate how perceptions of cyberbullying among Thai youth are influenced by Thai culture, including Thai youth culture. Data were collected from 15 to 24 year-olds in Central Thailand through 22 focus group discussions (FGDs) with 4–6 participants each, as well as 26 in-depth interviews (IDIs), totaling 136 participa…
Perceived to feel less
Socio-Sexual Experiences and Access to Healthcare Among Informal PrEP Users in the Netherlands
The aim of this qualitative study was to explore the experiences of informal PrEP users regarding access to PrEP and PrEP-related healthcare, community responses, sexual behavior and well-being. We interviewed 30 men who have sex with men (MSM) in semi-structured online interviews between March and August 2018. Interviews were analyzed using interpretive description. Informal PrEP users were well informed about the use of PrEP, but sometimes did …
Associations Between Dutch LGBT Hate Crime Experience, Well-Being, Trust in the Police and Future Hate Crime Reporting
LGBT-related hate crime is a conscious act of aggression against an LGBT citizen. The present research investigates associations between hate crime, psychological well-being, trust in the police and intentions to report future experiences of hate crime. A survey study was conducted among 391 LGBT respondents in the Netherlands. Sixteen percent experienced hate crime in the 12 months prior. Compared to non-victims, victims had significant lower ps…
The worldwide burden of HIV in transgender individuals
Introduction Transgender individuals are at risk for HIV. HIV risks are dynamic and there have been substantial changes in HIV prevention (e.g., pre-exposure prophylaxis [PrEP]). It is thus time to revisit HIV prevalence and burden among transgender individuals. The objective of this systematic review and meta-analysis was thus to examine worldwide prevalence and burden of HIV over the course of the epidemic among trans feminine and trans masculi…
Slow Uptake of PrEP
Despite the improved availability and affordability of PrEP in the Netherlands, PrEP uptake is low among men who have sex with men (MSM). To optimize uptake, it is important to identify facilitators and barriers of PrEP use. During our study period, the price of PrEP dropped significantly after generic PrEP was introduced. We investigated whether the price drop predicts PrEP uptake, alongside behavioral and demographic characteristics. Participan…
PrEP in the Context of Other HIV Risk Reduction Strategies Among Men Who Have Sex with Men
Agency and Upgrading in Ethiopia's Global Production Networks
Ethiopia's quest for export-led industrialization through manufacturing is seen by many development economists as a test case for the larger potential of developmental states in Africa to benefit from global value chains. In recent years this quest has run into difficulties, prompting other scholars to question the social and economic advantages of this strategy. This article takes a novel approach to this question by examining the rise and fall …
Does Investor Origin Matter? The Multidimensional Well-Being and Mental Health of Female Workers in Foreign-Owned Flower Farms and Apparel Factories in Ethiopia
Investors from various origins in FDI employ a large number of female workers in Ethiopia, but one of the areas where there is lack of research is the well-being consequences of such jobs and whether these are uniform across investors from various origins. To address this gap, this study examined how investor origin is associated with the multidimensional well-being and mental health of female workers using survey data on 2,515 workers employed i…
Patterns of Chemsex Substance Use and Its Association with HIV Transmission Risk Among Men Who Have Sex with Men in Thailand
Sexualized substance use or “chemsex” may contribute to the HIV epidemic among men who have sex with men (MSM) in Thailand. Specific patterns of chemsex use may be associated with different HIV/STI transmission risks. We examined typologies and correlates of sexualized substance use among a sample of high-risk MSM ( n = 532) who had attended a private sex party or circuit party in the past three years using latent class analysis. Multinomial regr…
The role of fear as a barrier and facilitator to antiretroviral therapy initiation in Indonesia
Initiating antiretroviral therapy (ART) in Indonesia poses major challenges, with limited studies on specific ART initiation barriers and facilitators. Using a socioecological approach, we explored, through semi-structured interviews, the perspectives of 67 participants: 17 people with HIV not (yet) on ART, 30 people with HIV on treatment, and 20 HIV service providers (HSPs). Fears emerged as pervasive barriers to initiation encompassing, at the …
A Syndemic Clustering of Adversities on Suicide Risk among YMSM Living with HIV in Bangkok
This study investigated the clustering of psychosocial adversities and their synergistic effect with depression on suicidality in a 12-month prospective cohort (N = 214) of YMSM living with HIV in Bangkok, Thailand. Latent class analysis identified subgroups with distinct combinations of adversities, including bullying, intimate partner violence, substance use, HIV stigma, low social support, histories of sex work, and below-income status. Signif…
Psychology (20 works) · Social Psychology (14 works) · Political science (8 works) · Social and Intergroup Psychology (8 works) · HIV/AIDS Research and Interventions (7 works) · Social Psychology (7 works) · Behavioral Health and Interventions (6 works) · HIV, Drug Use, Sexual Risk (6 works) · Medicine (6 works) · Public health (6 works)