Gerjo Kok
Dados Biográficos
| ID | 206691 |
|---|---|
| NOME | Gerjo Kok |
| PRENOMES | Gerjo |
| SOBRENOME | Kok |
| ASSINATURA | KOK G |
| AFILIAÇÕES | Maastricht University |
| ORCID | 0000-0002-3501-4096 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 95 |
| TOTAL DE CITAÇÕES | 120 |
| TOTAL COMO AUTOR | 95 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1983 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2024 |
| ÍNDICE H | 6 |
Crossroads of well-being and compliance
The VRP appeared to be a measure with substantial impact on well-being for some, mostly because social structures were disrupted. The measure showed fluctuating compliance, in which feasibility and frequent changes in the VRP played a role. Well-being seemed related to the number of visitors that was allowed; a restriction of four visitors was feasible, while one visitor resulted in a negative breaking-point in resilience, which had an impact on …
Willingness to pay for a Covid-19 vaccine and its associated determinants in Iran
Introduction: Understanding the individuals' willingness to pay (WTP) for the COVID-19 vaccine could help design policy interventions to control the COVID-19 pandemic. This study aimed to estimate the individuals' willingness to pay (WTP) for a COVID-19 vaccine and to identify its associated determinants. Methods: A cross-sectional survey was conducted on 526 Iranian adults using a web-based questionnaire. A double-bounded contingent valuation ap…
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…
Intervention mapping as a guide to developing, implementing, and evaluating stigma reduction interventions
Stigmatization is a complex and deeply ingrained process, not easily amenable to change. The field of systematic behavior change can offer guidance for the improvement of stigma reduction efforts. In this article, we describe Intervention Mapping as a relevant approach for designing stigma reduction interventions. We demonstrate that, for stigma reduction to be effective, a number of actions are essential. We must (1) ascertain, at various socioe…
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…
Sexual health counselling by Dutch HIV care providers
To improve sexual health among people living with HIV, sexual health should be addressed during consultations in routine HIV care. The aim of the present study was to investigate to what extent Sexual Health Counselling (SHC) is incorporated into routine Dutch HIV care and to explore differences between physicians and nurses in their practices and views regarding SHC. A cross-sectional survey was conducted among all HIV physicians (N=110) and HIV…
Covid-19 Vaccine Hesitancy
COVID-19 vaccine hesitancy may be regarded as a new pandemic hindering the elimination of or coping with COVID-19. This study assessed reasons for COVID-19 vaccine hesitancy using the I-Change Model (ICM) by considering the role of informational and psychosocial factors. A cross-sectional online survey using a convenience sample was conducted among Dutch adults ( n = 240). The questionnaire assessed information factors, predisposing factors, awar…
Changing healthcare professionals' non-reflective processes to improve the quality of care
Combining theories of habit and routines has the potential to advance implementation science by providing a fuller understanding of the range of factors, operating at multiple levels of analysis, which can impact on the behaviours of healthcare professionals, and so quality of care provision
Proposing a new approach to funding behavioural interventions using iterative methods
Current research funding models for health psychologists tend to be biased toward support for large-scale 'definitive' behavioural trials. This approach emphasizes rigorous tests of one or more key questions, but, unintentionally, may lead to the funding of interventions that are based on myriad untested assumptions. We propose that future funding models should provide support for 'iterative' research that tests assumptions at each stage of the i…
Selection of determinants of students' adherence to Covid-19 guidelines and translation into a brief intervention
BACKGROUND: When reopening universities in times of COVID-19, students still have to adhere to COVID-19 behavioral guidelines. We explored what behavioral determinants (and underlying beliefs) related to the adherence to guidelines are both relevant and changeable, as input for future interventions. METHODS: A cross-sectional online survey was conducted (Oct-Nov 2020), identifying behavioral determinants (and underlying beliefs) of university stu…
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…
Implementation Mapping
Background: The ultimate impact of a health innovation depends not only on its effectiveness but also on its reach in the population and the extent to which it is implemented with high levels of completeness and fidelity. Implementation science has emerged as the potential solution to the failure to translate evidence from research into effective practice and policy evident in many fields. Implementation scientists have developed many frameworks,…
Intervention Mapping
Evidence-informed health intervention planning that incorporates theoretical and empirical evidence and engages key stakeholders and community members or patients in the planning process results in interventions that are more effective. Nevertheless, exactly how and when to use evidence, theory, and community-based participation during planning represents a challenge. In this Perspective, we describe Intervention Mapping (IM), a framework for the…
From Physical to Spiritual
Understanding the perceptions of health and sickness can help the government, health providers and health promoters encourage individuals to participate in healthy behaviors and to follow a healthy lifestyle. Jakarta, the capital city of Indonesia, is a culturally, socially and financially diverse city, with complex health care needs. As yet, there is no published data available about Jakartans' (i.e., the citizens of Jakarta city) perceptions on…
Explaining the determinants of hookah consumption among women in southern Iran
The results indicated the extensive influence of internal and external factors on the consumption of hookah. In order to successfully reduce the consumption of hookah, it is essential to consider intrapersonal, interpersonal, organizational, social and political factors
Preventing adolescent sexual harassment
We recommend that parents should also be involved in the development of sex and relationship education programs, and should be allowed to participate in the program itself. To meet the needs of intervention developers, greater insight is needed into the importance of the individual steps in the Intervention Mapping framework. In our view, the development of practice-based interventions will improve if future intervention developers combine eviden…
Development of Long Live Love +, a school-based online sexual health programme for young adults. An intervention mapping approach
This paper describes the development of a Dutch online programme called Long Live Love+ focusing on positive, coercion-free relationships, contraception use, and the prevention of STIs, using the Intervention Mapping (IM) approach. All six steps of the approach were followed. Step 1 confirmed the need for a sexual health programme targeting young people aged 15 and over enrolled in higher level secondary education. Step 2 resulted in the producti…
Waste Separation in Cafeterias
Recycling waste is important to reduce the production of greenhouse gasses. The aim of this project was to understand determinants of cafeteria waste separation behavior among university students. First, the determinants of waste separation behavior among university students ( n = 121) were explored using an online questionnaire. In study 2 (pre-/post-test design), the effect of a small intervention (based on study 1) on actual waste sorting beha…
Planning theory- and evidence-based behavior change interventions
This paper discusses the Intervention Mapping (IM) protocol for planning theory- and evidence-based behavior change interventions. IM has been developed in the field of health promotion in 1998 and has mostly been applied in that field, but applications in other fields are emerging. IM can be used for any intervention that involves changing behavior. The paper discusses the protocol and its basic issues and presents in-depth examples of its use i…
Systematic Development of a Dutch School-Based Sexual Prejudice Reduction Program
Experiences of sexual prejudice threaten the quality of life and psychological well-being of sexual minority youth. The aim of this paper is to provide a comprehensive overview of how we developed a theory- and evidence-based sexual prejudice reduction program suitable for the Dutch high school context, guided by the intervention mapping approach (IM). In line with IM, six steps were followed: an initial needs assessment in which empirical, theor…
A taxonomy of behaviour change methods
In this paper, we introduce the Intervention Mapping (IM) taxonomy of behaviour change methods and its potential to be developed into a coding taxonomy. That is, although IM and its taxonomy of behaviour change methods are not in fact new, because IM was originally developed as a tool for intervention development, this potential was not immediately apparent. Second, in explaining the IM taxonomy and defining the relevant constructs, we call atten…
Development of a theory-guided pan-European computer-assisted safer sex intervention
HIV is a growing public health problem in Europe, with men-having-sex-with-men and migrants from endemic regions as the most affected key populations. More evidence on effective behavioral interventions to reduce sexual risk is needed. This article describes the systematic development of a theory-guided computer-assisted safer sex intervention, aiming at supporting people living with HIV in sexual risk reduction. We applied the Intervention Mappi…
Stigma experiences among substance users with HIV
Two conditions that are highly stigmatized are substance use and HIV. In this qualitative study, we investigated, through thematic analyses of verbatim transcripts, 15 substance users’ experiences with receiving their diagnosis, making disclosure decisions, and receiving and dealing with stigmatizing reactions. Motivations to disclose included being in poor health, having visible symptoms, others seeing HIV medication, poor medication access with…
The Dutch ‘Focus on Strength’ intervention study protocol
NTR5676 , registered 8 February 2016 (retrospectively registered)
Healthy and unhealthy social norms and food selection. Findings from a field-experiment
The behavior of others in people's social environment (i.e., descriptive norms), as well as their opinions regarding appropriate actions (i.e., injunctive norms) strongly influence people's decisions and actions. The goal of this study was to extend prior laboratory research on the influence of social norms on food choices, by conducting a field-experiment in an on-campus food court. One of three different messages was posted on a given day: a he…
Intervention Mapping
Evidence-based health promotion programmes are based on empirical data and theory. While a broad range of social and behavioural science theories are available, the actual application of these theories in programme design remains a real challenge for health promotion planners. Intervention Mapping describes a protocol for the development of theory- and evidence-based health promotion programmes. It provides guidelines and tools for the selection …
Food and values
Stigma by Association Among Family Members of People with a Mental Illness
People with mental illness are not the sole recipients of stigmatisation; their immediate family members may be subjected to stigma by association. Through semi‐structured interviews, we investigated experiences of stigma by association among 23 immediate family members of people with mental illness. Participants reported experiencing stigma by association from community members, mental health professionals, and civil servants. Familial relations…
Identifying Effective Methods for Teaching Sex Education to Individuals With Intellectual Disabilities
Sex education for individuals with intellectual disabilities is important. However, our knowledge about effective methods for teaching sex education to this population is limited. We report the results of a systematic review identifying methods for sex education programs aimed at individuals with intellectual disabilities. In all, 20 articles were included that met the criteria set in terms of topic--the effectiveness of sex education programs--a…
Action-specific Cognitions of Planned and Preparatory Behaviors of Condom Use among Dutch Adolescents
Many adolescents fail to use condoms, even when they are motivated to do so. An important reason for their failure to use condoms is that they do not prepare themselves for potential sexual encounters. The present study examined the circumstances under which Dutch adolescents were likely to prepare themselves for condom use (buying and carrying). In a sample of 399 secondary school students, including students with and without sexual experience, …
Sex Education as Health Promotion
The Role of Coping Appraisal in Reactions to Fear Appeals
Fear appeal theory postulates a multiplicative relationship between threat information and coping appraisal on fear control (e.g. avoid thinking about breast cancer to reduce feelings of fear) and danger control (e.g. motivation to perform monthly breast self-examination to detect breast cancer). That is, the effects of threat information on measures of both coping modes are moderated by beliefs about one's ability to cope with the presented thre…
Tin recycling
Effects of an Interactive School-Based Program for Preventing Adolescent Sexual Harassment
Many adolescents experience sexual harassment and victims of sexual harassment have higher risks regarding well-being and health behaviors such as higher risks of suicidal thoughts, suicidal ideation and feeling unsafe at school. A peer-performed play and school lessons on preventing sexual harassment behavior were presented to secondary school students. We evaluated its effectiveness, using a cluster-randomized controlled design to assign school…
Food and the relation between values and attitude characteristics
Effects of public education about breast cancer and breast self-examination
Changing healthcare professionals' non-reflective processes to improve the quality of care
Combining theories of habit and routines has the potential to advance implementation science by providing a fuller understanding of the range of factors, operating at multiple levels of analysis, which can impact on the behaviours of healthcare professionals, and so quality of care provision
The gay cruise
Sexual Decision-Making in HIV-Positive Men Who Have Sex with Men
Determinants of intended condom use with steady and casual sex partners were examined among Dutch HIV-positive men who have sex with men (MSM) (N = 296). Given the proposition that safer sex behavior among HIV-positive people is a form of prosocial behavior, the present study extended the general framework of the Theory of Planned Behavior with Schwartz's norm-activation theory and tested the assumption that personal norms would mediate the effec…
Determinants of active self-care behaviour of insulin treated patients with diabetes
Go Fast! Reaction Time Differences between Adults and Adolescents in Evaluating Risky Traffic Situations
This study investigated the hypothesis that adults are faster than adolescents in responding to risks. Twenty-six adolescents ( Mage = 15 years) and 26 adults ( Mage = 47 years) responded to risky situations (e.g. 'Is it a good idea to drive a car while having drunk alcohol?') and non-risky situations (e.g. '... wear a helmet while riding a moped?') in a choice reaction time task. Adults responded 110ms faster to both risky and non-risky question…
The learning curve
The Further Away, the Less Serious
In this study two groups were compared with respect to their perceptions of value and probability of an ecological calamity. The first group expected the calamity to occur within 6 mo, the second after at least 6 mo. Temporal distance had an effect on perceived value—the first group rated the calamity more serious—but had no effect on perceived probability. It is suggested that in public education about ecology and health, the value of long-term …
Effects of public education about breast cancer and breast self-examination
Tin recycling
Measurements effects in reattribution research
In studies investigating the effects of reattribution training, reattributing to effort is confounded with forcing subjects to think about causes of their performance. An experiment was conducted to investigate the effects on performance of having people think about causes of outcomes by means of measuring attributions for success or failure. The results indicate that measurement has a beneficial effect on performance after failure. Measurement o…
Research to support health promotion in practice
Increased co-operation between researchers and practitioners will improve health promotion. This paper presents six propositions in which problems in the interaction between research and practice are diagnosed. A number of possible solutions are suggested the need for practical research, an early start to co-operation, small scale research-and-development projects and evalualion research.
Determinants of active self-care behaviour of insulin treated patients with diabetes
Service attributes and the choice for STD health services in persons seeking a medical examination for an STD
The Theory of Planned Behavior
PURPOSE: To review applications of Ajzen's theory of planned behavior in the domain of health and to verify the efficiency of the theory to explain and predict health-related behaviors. METHODS: Most material has been drawn from Current Contents (Social and Behavioral Sciences and Clinical Medicine) from 1985 to date, together with all peer-reviewed articles cited in the publications thus identified. FINDINGS: The results indicated that the theor…
Social Psychology and Health Education
This chapter addresses the contribution of social psychology to the field of health education. After a short introduction to health education, the role of social psychology is addressed. This role is referred to as problem-driven applied social psychology. Subsequently, the chapter describes general and specific theories that can be applied to the analysis of psychosocial determinants of health related behaviours, the development of theory-based …
Intervention Mapping
The practice of health education involves three major program-planning activities: needs assessment, program development, and evaluation. Over the past 20 years, significant enhancements have been made to the conceptual base and practice of health education. Models that outline explicit procedures and detailed conceptualization of community assessment and evaluation have been developed. Other advancements include the application of theory to heal…
The socio-cultural contexts of sexually transmitted diseases in South Africa
Sexually transmitted diseases (STDs) are widespread in South Africa and contribute to the growing HIV epidemic. As an important step in curtailing the spread of STDs, this study explores STD patients' illness representations within its socio-cultural context, particularly gender relationships. In-depth interviews were conducted with Xhosa- and Zulu-speaking patients in clinics in Cape Town, Western Cape (N = 67) and in rural areas of Kabokweni, M…
The learning curve
Evaluation of an HIV Prevention Intervention for Men Who Have Sex with Men at Cruising Areas in the Netherlands
Scary warnings and rational precautions
Research into the effects of fear-arousal on precautionary motivation and action is reviewed. Current models do not adequately distinguish between emotional (i.e., fear arousal) and cognitive (i.e., threat perception) responses to fear appeals and, in general, are not well supported. Evidence suggesting that (i) coping appraisals are more powerful predictors of precautionary action than threat perception and that (ii) fear control processes may i…
The additional value of anticipated regret and psychopathology in explaining intended condom use among drug users
In this study we examine determinants of intended condom use with casual and steady sex partners among drug users. Our aim was to find out whether anticipated regret and psychopathology represent additional factors in explaining condom use behaviour, on top of the constructs defined in traditional psychosocial models of behaviour. A questionnaire measuring intentions, attitude, beliefs, personal norm, subjective norm, descriptive norm, self-effic…
Effective methods to change sex-risk among drug users
The Role of Coping Appraisal in Reactions to Fear Appeals
Fear appeal theory postulates a multiplicative relationship between threat information and coping appraisal on fear control (e.g. avoid thinking about breast cancer to reduce feelings of fear) and danger control (e.g. motivation to perform monthly breast self-examination to detect breast cancer). That is, the effects of threat information on measures of both coping modes are moderated by beliefs about one's ability to cope with the presented thre…
Sex Education as Health Promotion
Intervention Mapping
Evidence-based health promotion programmes are based on empirical data and theory. While a broad range of social and behavioural science theories are available, the actual application of these theories in programme design remains a real challenge for health promotion planners. Intervention Mapping describes a protocol for the development of theory- and evidence-based health promotion programmes. It provides guidelines and tools for the selection …
Sexuality and Sexual Risk Behavior in HIV-Positive Men Who Have Sex With Men
The purpose of this study was to examine the psychological processes pertaining to sexuality and sexual risk behavior among HIV-positive men who have sex with men (MSM). The authors analyzed transcripts of 30 semistructured interviews. Findings suggest that sexual problems in HIV-positive MSM might be primarily caused by the perceived risk of transmitting HIV to others. Furthermore, safer sexual behavior seems to be related to feelings of persona…
Food and values
Food and the relation between values and attitude characteristics
Reasons for Not Taking an HIV-Test Among Untested Men Who Have Sex with Men
The gay cruise
How to change environmental conditions for health
Since the Lalonde report, contemporary public-health theory has given steadily more attention to the role of environments in influencing health status. Environments, both social and physical, influence health directly or through complex interactions with behavior, genetics and health-care systems. They are also important for public-health because environments are the complex systems through which people are both empowered and exercise their empow…
Medicine (78 obras) · Psychology (76 obras) · Social Psychology (46 obras) · Public health (43 obras) · Nursing (36 obras) · Psychiatry (36 obras) · Adolescent Sexual and Reproductive Health (32 obras) · Family medicine (31 obras) · Environmental health (29 obras) · Psychological intervention (27 obras)