Karlijn Massar
Dados Biográficos
| ID | 73500 |
|---|---|
| NOME | Karlijn Massar |
| PRENOMES | Karlijn |
| SOBRENOME | Massar |
| ASSINATURA | MASSAR K |
| AFILIAÇÕES | Maastricht University |
| ORCID | 0000-0003-4388-3846 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 32 |
| TOTAL DE CITAÇÕES | 6 |
| TOTAL COMO AUTOR | 32 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2008 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 1 |
Educational Differences in Sexual Health among Adolescents in Europe
In European countries with stratified educational trajectories, in which adolescents are separated into vocational and academic tracks, studies have shown that there are educational differences in adolescent sexual health. However, due to heterogeneity of the existing literature in terms of national educational systems and dimensions of sexual health being studied, uncertainty remains about the strength of the association between educational trac…
Parental mediation strategies for social media use
As social media provides opportunities but also involves risks for adolescents, some parents apply strategies to help their children adaptively use social media. Taxonomies of these strategies were primarily based on research conducted in the Global North. However, while social media use is also highly prevalent in the Global South, research on parental mediation strategies in the Global South is relatively scarce. The aim of this study is to inc…
Exploring Attitudes Toward “Sugar Relationships” Across 87 Countries
The current study investigates attitudes toward one form of sex for resources: the so-called sugar relationships, which often involve exchanges of resources for sex and/or companionship. The present study examined associations among attitudes toward sugar relationships and relevant variables (e.g., sex, sociosexuality, gender inequality, parasitic exposure) in 69,924 participants across 87 countries. Two self-report measures of Acceptance of Suga…
Effect evaluation of a comprehensive sexuality education intervention based on socio-emotional learning among adolescents in Jakarta, Indonesia
Introduction The field of comprehensive sexuality education (CSE) has switched from a focus on adolescents’ health to a more holistic approach, embracing the concept of sexual development with the aim of improving adolescents’ sexual well-being. The growing interest in the link between CSE and socio-emotional learning (SEL) competencies led to the development of the Journey4Life (J4L), a comprehensive sexuality education curriculum based on socio…
Social Media as Input for Recruiment
We examine whether information about a female candidate's relationship history, obtained from social media profiles, affects evaluations of her suitability for a student union board position. Moreover, we investigate whether it is possible to mitigate any bias against women with multiple partners by providing information about the origins of prejudice. We utilized a 2 (relationship history: multiple vs. one partner(s)) X 2 (mitigating information…
Individual Differences in How Desirable People Think They Are as a Mate
Mate value is an important concept in mate choice research although its operationalization and understanding are limited. Here, we reviewed and evaluated previously established conceptual and methodological approaches measuring mate value and presented original research using individual differences in how people view themselves as a face-valid proxy for mate value in long- and short-term contexts. In data from 41 nations ( N = 3895, M age = 24.71…
The Future Positive micro-intervention protocol
This paper describes the development of a Dutch micro-intervention, Future Positive , that aims to increase health behaviors among employees with a low socio-economic position (SEP), with the ultimate aim to decrease socio-economic health inequalities. Intervention Mapping (IM) was used to adapt previously developed psychological capital interventions into a micro-intervention suitable to be delivered in the work context for employees with a low …
Predictors of enhancing human physical attractiveness
People across the world and throughout history have gone to great lengths to enhance their physical appearance. Evolutionary psychologists and ethologists have largely attempted to explain this phenomenon via mating preferences and strategies. Here, we test one of the most popular evolutionary hypotheses for beauty-enhancing behaviors, drawn from mating market and parasite stress perspectives, in a large cross-cultural sample. We also test hypoth…
It’s the thought that counts
In the present study, we reason that the ability to keep unwanted thoughts and intrusions at bay – thought control ability – might explain part of the relationship between trait self-control and positive psychological outcomes. We predict that the ability to keep unwanted thoughts at bay causes people high in trait self-control to report higher subjective well-being (Study 1), and makes them to be more likely to cope with stressful life events in…
Implementation of a school-based Social Emotional Learning Program in Panama
This study aims to explore the factors influencing the implementation of the social-emotional learning pilot program Me and My new World, which emphasizes enhancing personal capacities toward equal personal relationships and behaviors of adolescents in Panama. Since the effect assessment of the program showed improved personal capacities of adolescents that might positively influence their personal relationships and well-being, a deeper understan…
The Relationship between Compulsive Exercise, Self-Esteem, Body Image and Body Satisfaction in Women
Compulsive exercise has both an exercise volume and an emotional component. The level of compulsive exercise is linked to one's self-esteem, body image, and body satisfaction and those factors could be a target for future interventions
The Development of an Electronic Clinical Decision and Support System to Improve the Quality of Antenatal Care in Rural Tanzania
It is widely recognised that high quality antenatal care is a key element in maternal healthcare. Tanzania has a very high maternal mortality ratio of 524 maternal deaths per 100,000 live births. Most maternal deaths are due to preventable causes that can be detected during pregnancy, and antenatal care therefore plays an important role in reducing maternal morbidity and mortality. Unfortunately, quality of antenatal care in Tanzania is low: Rese…
Determinants of early breast cancer presentation
OBJECTIVE: Early presentation with breast cancer symptoms is crucial to the effectiveness of treatment and the affected women's long-term survival. However, in Indonesia, 60-70% of breast cancer patients first present themselves to the hospital in an advanced stage. Knowledge about the determinants of breast cancer early presentation could inform efforts to promote healthcare seeking at earlier symptomatic stages. In the current study, we explore…
Developmental Assets in South African Adolescents Exposed to Violence
Violence exposure is associated with psychological and behavioural maladjustment in adolescents. Yet, not all adolescents exposed to violence experience negative symptoms. Resilience is an outcome that is in part determined by multiple protective factors, or developmental assets, that protect adolescents from the negative influence of encountered stressors and allow them to attain positive developmental outcomes. A qualitative study was conducted…
Adolescent Sexual and Reproductive Health Care Service Availability and Delivery in Public Health Facilities of Plateau State Nigeria
To assess the availability, accessibility, appropriateness and quality of adolescent sexual and reproductive health (ASRH) services in primary health care (PHC) facilities in Plateau State, Nigeria, a cross-sectional study was conducted in 230 PHC facilities across the three senatorial zones of Plateau state. Primary data were obtained through face-to-face interviews with heads of facilities from December 2018 to May 2019. An adapted questionnair…
Childhood Socioeconomic Position, Adult Educational Attainment and Health Behaviors
These results suggest that larger studies are warranted that confirm the potential of PsyCap and health literacy in mitigating the negative effects of lower SEP on health behaviors and health outcomes
Social comparison on social networking sites
Because of the rise of social networking sites (SNSs), social comparisons take place at an unprecedented rate and scale. There is a growing concern that these online social comparisons negatively impact people's subjective well-being (SWB). In this paper, we review research on (a) the antecedents of social comparisons on SNSs, (b) the consequences of social comparisons on SNSs for SWB and, (c) social comparison as a mechanism explaining (mediator…
Me and My New World
Gender inequalities still affect the health and well-being of young people worldwide. Given the apprehensions among government and educators in a conservative context like Panama to implement comprehensive sexual education, there is a need for other educational efforts to stimulate healthy and respectful intimate relationships between adolescents. This article examines to what extent a newly developed Social-Emotional Learning (SEL) program, Me a…
Perceptions of Alcohol and Alcohol Use among Community Members and Young Adults in Ukraine
Background: Unhealthy alcohol use is a public health issue, prioritized by the World Health Organization (WHO) for prevention and reduction. Ukraine falls in the highest WHO category of “years of life lost” due to alcohol use. Objective: To investigate perceptions of alcohol consumption in a sample of youth and adults in western Ukraine. Methods: In-depth semi-structured interviews were conducted with 38 adult stakeholders (aged 21–63 years), and…
Violence typologies and sociodemographic correlates in South African adolescents
Sociodemographic factors are uniquely associated with different violence typologies suggesting the need for tailored interventions to target adolescents with differed risks to violence victimisation and perpetration. Strengthening family relations, particularly between mother and child, may protect adolescents from the experiences of victimisation and perpetration
Who pushes you to be bigger?”
Western studies suggest that perceived pressure from family members, peers, and the media to achieve muscularity ideals are associated with higher muscle dissatisfaction and that such associations are mediated through different psychological processes. However, how such findings apply to young Chinese men has not been explored. Using an online survey, this study examined if perceived pressure from family, peers, and the media to achieve musculari…
Determinants of breast self-examination practice among women in Surabaya, Indonesia
This study indicated that several HBM constructs significantly associated with BSE practice among Indonesian women, suggesting that BSE health education programs should emphasize the perceived benefits of BSE, focus on increasing women's self-efficacy to address and overcome perceived barriers in performing BSE, and help them in identifying personally relevant cues to action
Contexts for Women’s Aggression Against Women
Exploring the Perceived Effectiveness of Applied Theater as a Maternal Health Promotion Tool in Rural Zambia
In the current study, we aimed (a) to extend the previous research conducted in Kalomo District on the psychosocial factors that influence women's intention to utilize maternal health care services (MHS) and (b) to explore community members' perceptions of the use of a theater-based health promotion program to positively influence these factors among pregnant women. Semistructured, in-depth interviews were conducted with 44 respondents, and confi…
Conflict Between the Sexes
The effect of a subliminally primed context on intrasexual competition depends on individual differences in sex drive
Individual Differences in How Desirable People Think They Are as a Mate
Mate value is an important concept in mate choice research although its operationalization and understanding are limited. Here, we reviewed and evaluated previously established conceptual and methodological approaches measuring mate value and presented original research using individual differences in how people view themselves as a face-valid proxy for mate value in long- and short-term contexts. In data from 41 nations ( N = 3895, M age = 24.71…
Who pushes you to be bigger?”
Western studies suggest that perceived pressure from family members, peers, and the media to achieve muscularity ideals are associated with higher muscle dissatisfaction and that such associations are mediated through different psychological processes. However, how such findings apply to young Chinese men has not been explored. Using an online survey, this study examined if perceived pressure from family, peers, and the media to achieve musculari…
Exploring the Perceived Effectiveness of Applied Theater as a Maternal Health Promotion Tool in Rural Zambia
In the current study, we aimed (a) to extend the previous research conducted in Kalomo District on the psychosocial factors that influence women's intention to utilize maternal health care services (MHS) and (b) to explore community members' perceptions of the use of a theater-based health promotion program to positively influence these factors among pregnant women. Semistructured, in-depth interviews were conducted with 44 respondents, and confi…
Height predicts jealousy differently for men and women
The effect of a subliminally primed context on intrasexual competition depends on individual differences in sex drive
Jealousy in the blink of an eye
In the present experiment it was investigated whether the evaluation of rivals could be an unconscious process, engaged in automatically whenever a rival is present. To this end, participants were subliminally primed with words relating to rival characteristics after which they read a jealousy inducing scenario and their jealousy was assessed. It was hypothesized that for women, their self‐reported mate value would act as a moderator on the effec…
Pregnant Women’s View on Their Relationship
The positive effects of partner support on pregnancy outcomes and maternal (mental) health are well established in the literature. Less is known about pregnant women’s perceptions of their partner and relationship, and whether these differ from those of nonpregnant women. Therefore, in the current study, data were collected through an online questionnaire among pregnant (n = 66) and nonpregnant (n = 59) women with similar demographic profiles. Th…
A night on the town
It is argued that, while men may be intrasexually more competitive than women, to attract potential mates, men will, more than women, associate with same-sex friends who are attractive to the opposite sex. Therefore, more than women, men will choose more physically attractive and dominant companions in a mating context than in a neutral context. In Study 1 among 262 participants a mating scenario (going to a party) and a neutral scenario (seeing …
Conflict Between the Sexes
Disgust
Individual Differences in Preventive Jealousy Determine Men's Jealousy after Subliminal Exposure to Rivals Wearing High- or Low-Status Clothes
This study investigated sex differences in jealousy after subliminal exposure to rivals wearing high-status or low-status clothes. It was expected that individual differences in preventive jealousy would moderate the relationship between a rival's characteristics and jealousy. Participants (Men: n = 54, M age = 21.6 yr., SD = 3.5; women: n = 71, M age = 20.7 yr., SD = 1.9) completed a parafoveal subliminal priming paradigm as well as questionnair…
Contexts for Women’s Aggression Against Women
Exploring the Perceived Effectiveness of Applied Theater as a Maternal Health Promotion Tool in Rural Zambia
In the current study, we aimed (a) to extend the previous research conducted in Kalomo District on the psychosocial factors that influence women's intention to utilize maternal health care services (MHS) and (b) to explore community members' perceptions of the use of a theater-based health promotion program to positively influence these factors among pregnant women. Semistructured, in-depth interviews were conducted with 44 respondents, and confi…
Determinants of breast self-examination practice among women in Surabaya, Indonesia
This study indicated that several HBM constructs significantly associated with BSE practice among Indonesian women, suggesting that BSE health education programs should emphasize the perceived benefits of BSE, focus on increasing women's self-efficacy to address and overcome perceived barriers in performing BSE, and help them in identifying personally relevant cues to action
Social comparison on social networking sites
Because of the rise of social networking sites (SNSs), social comparisons take place at an unprecedented rate and scale. There is a growing concern that these online social comparisons negatively impact people's subjective well-being (SWB). In this paper, we review research on (a) the antecedents of social comparisons on SNSs, (b) the consequences of social comparisons on SNSs for SWB and, (c) social comparison as a mechanism explaining (mediator…
Me and My New World
Gender inequalities still affect the health and well-being of young people worldwide. Given the apprehensions among government and educators in a conservative context like Panama to implement comprehensive sexual education, there is a need for other educational efforts to stimulate healthy and respectful intimate relationships between adolescents. This article examines to what extent a newly developed Social-Emotional Learning (SEL) program, Me a…
Perceptions of Alcohol and Alcohol Use among Community Members and Young Adults in Ukraine
Background: Unhealthy alcohol use is a public health issue, prioritized by the World Health Organization (WHO) for prevention and reduction. Ukraine falls in the highest WHO category of “years of life lost” due to alcohol use. Objective: To investigate perceptions of alcohol consumption in a sample of youth and adults in western Ukraine. Methods: In-depth semi-structured interviews were conducted with 38 adult stakeholders (aged 21–63 years), and…
Violence typologies and sociodemographic correlates in South African adolescents
Sociodemographic factors are uniquely associated with different violence typologies suggesting the need for tailored interventions to target adolescents with differed risks to violence victimisation and perpetration. Strengthening family relations, particularly between mother and child, may protect adolescents from the experiences of victimisation and perpetration
Who pushes you to be bigger?”
Western studies suggest that perceived pressure from family members, peers, and the media to achieve muscularity ideals are associated with higher muscle dissatisfaction and that such associations are mediated through different psychological processes. However, how such findings apply to young Chinese men has not been explored. Using an online survey, this study examined if perceived pressure from family, peers, and the media to achieve musculari…
The Development of an Electronic Clinical Decision and Support System to Improve the Quality of Antenatal Care in Rural Tanzania
It is widely recognised that high quality antenatal care is a key element in maternal healthcare. Tanzania has a very high maternal mortality ratio of 524 maternal deaths per 100,000 live births. Most maternal deaths are due to preventable causes that can be detected during pregnancy, and antenatal care therefore plays an important role in reducing maternal morbidity and mortality. Unfortunately, quality of antenatal care in Tanzania is low: Rese…
Determinants of early breast cancer presentation
OBJECTIVE: Early presentation with breast cancer symptoms is crucial to the effectiveness of treatment and the affected women's long-term survival. However, in Indonesia, 60-70% of breast cancer patients first present themselves to the hospital in an advanced stage. Knowledge about the determinants of breast cancer early presentation could inform efforts to promote healthcare seeking at earlier symptomatic stages. In the current study, we explore…
Developmental Assets in South African Adolescents Exposed to Violence
Violence exposure is associated with psychological and behavioural maladjustment in adolescents. Yet, not all adolescents exposed to violence experience negative symptoms. Resilience is an outcome that is in part determined by multiple protective factors, or developmental assets, that protect adolescents from the negative influence of encountered stressors and allow them to attain positive developmental outcomes. A qualitative study was conducted…
Adolescent Sexual and Reproductive Health Care Service Availability and Delivery in Public Health Facilities of Plateau State Nigeria
To assess the availability, accessibility, appropriateness and quality of adolescent sexual and reproductive health (ASRH) services in primary health care (PHC) facilities in Plateau State, Nigeria, a cross-sectional study was conducted in 230 PHC facilities across the three senatorial zones of Plateau state. Primary data were obtained through face-to-face interviews with heads of facilities from December 2018 to May 2019. An adapted questionnair…
Childhood Socioeconomic Position, Adult Educational Attainment and Health Behaviors
These results suggest that larger studies are warranted that confirm the potential of PsyCap and health literacy in mitigating the negative effects of lower SEP on health behaviors and health outcomes
The Future Positive micro-intervention protocol
This paper describes the development of a Dutch micro-intervention, Future Positive , that aims to increase health behaviors among employees with a low socio-economic position (SEP), with the ultimate aim to decrease socio-economic health inequalities. Intervention Mapping (IM) was used to adapt previously developed psychological capital interventions into a micro-intervention suitable to be delivered in the work context for employees with a low …
Predictors of enhancing human physical attractiveness
People across the world and throughout history have gone to great lengths to enhance their physical appearance. Evolutionary psychologists and ethologists have largely attempted to explain this phenomenon via mating preferences and strategies. Here, we test one of the most popular evolutionary hypotheses for beauty-enhancing behaviors, drawn from mating market and parasite stress perspectives, in a large cross-cultural sample. We also test hypoth…
It’s the thought that counts
In the present study, we reason that the ability to keep unwanted thoughts and intrusions at bay – thought control ability – might explain part of the relationship between trait self-control and positive psychological outcomes. We predict that the ability to keep unwanted thoughts at bay causes people high in trait self-control to report higher subjective well-being (Study 1), and makes them to be more likely to cope with stressful life events in…
Implementation of a school-based Social Emotional Learning Program in Panama
This study aims to explore the factors influencing the implementation of the social-emotional learning pilot program Me and My new World, which emphasizes enhancing personal capacities toward equal personal relationships and behaviors of adolescents in Panama. Since the effect assessment of the program showed improved personal capacities of adolescents that might positively influence their personal relationships and well-being, a deeper understan…
Psychology (27 obras) · Social Psychology (19 obras) · Developmental psychology (18 obras) · Medicine (13 obras) · Evolutionary Psychology and Human Behavior (10 obras) · Clinical Psychology (8 obras) · Environmental health (7 obras) · Nursing (7 obras) · Biology (6 obras) · Psychiatry (6 obras)