This master thesis investigated how social motives (prosocial vs. pro-self) and communication medium (headphones vs. no headphones) affect group negotiation outcomes. The study used a 2x2 factorial...Show moreThis master thesis investigated how social motives (prosocial vs. pro-self) and communication medium (headphones vs. no headphones) affect group negotiation outcomes. The study used a 2x2 factorial design with 41 three-person groups (N = 123), who engaged in a structured negotiation task. Hypothesis 1 predicted that prosocial groups would achieve higher joint outcomes than pro-self groups, and results of an ANOVA supported this prediction. Hypotheses 2 and 3, predicting that structured communication, using headphones to manipulate turn-taking behaviour, would improve prosocial and reduce pro-self groups negotiation outcomes, respectively, were not supported by an ANOVA. This suggests that while prosocial motives significantly improve outcomes, structured communication alone does not. Future research should explore additional communication structuring methods and broader contexts to validate these findings.Show less
Sibling relationships are among the longest-lasting relationships in most individuals' lives and the majority of the Dutch population has at least one sibling. Sibling relationships are crucial, as...Show moreSibling relationships are among the longest-lasting relationships in most individuals' lives and the majority of the Dutch population has at least one sibling. Sibling relationships are crucial, as they offer daily opportunities for children to develop social skills. The quality of sibling relationships can be influenced by various factors, including adverse childhood experiences (ACEs), which include 10 types of possible traumatic experiences among which child abuse, neglect and household dysfunction. ACEs can negatively impact a child's social and emotional development, posing risks to their ability to form and maintain relationships and having a possibly negative effect on their mental health later on in life. Current research often only considers biological siblings while the step-sibling relationship was the fastest-growing type of sibling relationship in families with divorced parents between 1997 and 2017. Therefore, the current study aimed to investigate the association between ACEs and the quality of the relationship among both biological and step-siblings who have experienced parental divorce. Hundred young adults between the ages of 18 and 25 completed a questionnaire in which they answered questions about their relationship with their siblings and their ACEs. Multiple regression analyses revealed that ACEs were similarly associated with a lower quality of the sibling relationships for both biological and stepsiblings. Specifically, emotional abuse by a parent during childhood and having a parent with alcohol and/or drug problems during childhood were linked to lower quality of the sibling relationship, while other childhood experiences examined were not related to relationship quality. These results highlight the significance of improving sibling relationship quality, as these relationships may buffer the adverse impacts of traumatic experiences. Adopting a family-focused approach could reduce these negative impacts, addressing the shadow of the past that these experiences may cast on sibling relationships.Show less
Problematic behaviour remains a problem within healthcare of individuals with dementia, especially as its patient group is set to expand. Problematic behaviour is often caused by pain and places a...Show moreProblematic behaviour remains a problem within healthcare of individuals with dementia, especially as its patient group is set to expand. Problematic behaviour is often caused by pain and places a heavy burden on both professional and family caregivers. Especially since family caregivers are often overlooked as a factor in care. This study therefore investigates the effectiveness of the STA OP! method (SOM), a stepwise approach to address problematic behaviour and pain in individuals with dementia, as well as how the efficacy of SOM is moderated by family involvement. The study, conducted within the CARED-4 project, utilizes a quasi-experimental longitudinal design with measurements at baseline, 3 months, and 6 months after implementing SOM. It included 84 residents with dementia from 10 Dutch nursing homes units paired with their family caregivers. Problematic behaviour was examined using the Neuropsychiatric Inventory Questionnaire (NPI-Q) and family involvement was examined through a tailored questionnaire. Analysis was performed with RM Anova for problematic behaviour and family involvement and a general linear model for the moderation of SOM by family involvement. Results indicated that SOM effectively reduces problematic behaviour overall (F(2,55) = 3.81, p = 0.028), after 3 months (Mean Difference = 5.47 SE= 1.97, p = 0.007), but not after 6 months (Mean Difference = 5.70 SE = 3.36, p = 0.095). Family involvement did not change overall (F(1.62,30) = 2.12, p = 0.138). Accordingly, family involvement did not moderate the impact of SOM on problematic behaviour (F(2) = 1.43, p = 0.243). Despite methodological challenges mainly due to missing data, the study takes a first step towards understanding how the effectiveness of SOM interacts with family involvement. So, although family involvement did not moderate a significant reduction in problematic behaviour, the efficacy of SOM has further been established.Show less
In this research, we study the oxidation process of the Transition Metal Dichalcogenide (TMD) niobium diselenide, NbSe2. TMDs are a category of van der Waals materials, of which samples are...Show moreIn this research, we study the oxidation process of the Transition Metal Dichalcogenide (TMD) niobium diselenide, NbSe2. TMDs are a category of van der Waals materials, of which samples are obtained by exfoliation. The measurements are performed with the Low Energy Electron Microscope (LEEM), which measures reflectivity at different energy, resulting in the so-called IV curves. To analyze oxidation, we have developed a new method to obtain in situ exfoliated flakes in the LEEM set-up. First, we measure in situ cleaved NbSe2 flakes (bulk). The reflectivity upon adding (pure) oxygen is followed. Additionally, the reflectivity of ex situ cleaved NbSe2 flakes is assessed. Here, an intensity boundary between flake’s edge and center is recognized. The reflectivity measurements show that the electronic structure is different across the boundary: a V-shaped reflectivity minimum appears, which sharpens over time upon oxidation. The boundary is further researched with Atomic Force Microscopy and Energy Dispersive X-ray analysis. Additionally, we perform roughness analysis and Principal Component Analysis. The latter provides an alternative method to follow the change in electronic properties over time. We propose that already degraded NbSe2 flakes are more susceptible to oxidatin damage, compared to in situ exfoliated flakes. Upon further measurements, the in situ cleaved samples do not show any degradation signs, therefore we attribute the presence of an intensity contrast with the associated IV features, to oxidized NbSe2.Show less
Research shows that many students don’t have enough reading comprehension to understand texts. One way of improving students’ reading comprehension could be by providing feedback to students while...Show moreResearch shows that many students don’t have enough reading comprehension to understand texts. One way of improving students’ reading comprehension could be by providing feedback to students while they answer questions about a text. To use feedback efficiently in the future, it’s important to know how elaborate effective feedback should be. Considering this, the current study examined the relation between feedback and the use of reading strategies in general, and for the use of reading strategies while reading a text. Moreover, the relation between the amount of information provided in the feedback and the use of reading strategies was examined. Experimental data of 97 participants aged 10 and 11 years (52.6% boys, M = 10.45, SD = 0.52) was collected using questionnaires, namely the Metacognitive Awareness of Reading Strategies Inventory and the Task-Specific Strategy Self-Report. Participants were pre- and post-tested and had three intervention sessions. They were randomly assigned to a condition, namely no feedback, short feedback, or elaborate feedback. During the intervention sessions, participants had to read a text, and answer questions about the text. Depending on their condition, they either received feedback or not. If they did, the amount of information in the feedback differed. Every session ended with a questionnaire. Using SPSS, two repeated measures ANOVA were completed. According to the results, there was no relation between feedback and the use of reading strategies. Furthermore, no differences were found for the different amounts of information in feedback and the use of reading strategies. The biggest limitation of the current study was the lack of a motivational component in the used intervention. Therefore, future research should use motivation as part of the intervention to investigate if feedback could help in improving the use of reading strategies for youth aged 10 to 11.Show less
Insomnia is highly prevalent in patients with long-term medical conditions. Although fatigue is the most common daytime symptom of insomnia, it is still largely unknown which underlying components...Show moreInsomnia is highly prevalent in patients with long-term medical conditions. Although fatigue is the most common daytime symptom of insomnia, it is still largely unknown which underlying components are associated with fatigue in a broader population of insomnia patients. Previous literature stated that dysfunctional sleep-related beliefs (DSRB) and pre-sleep arousal (PSA) could explain the relationship between insomnia and fatigue. Additionally, subjective sleep characteristics, such as insomnia severity, number of nocturnal awakenings (NoA) and sleep efficiency might also be components of this relationship. This study aimed to investigate how these factors affect fatigue in a broad medical population with insomnia. It was hypothesized that more disturbed sleep-related psychological factors and subjective sleep characteristics were associated with increased fatigue. This cross-sectional study, derived from the ongoing TIMELAPSE study, consisted of 154 participants. Participants completed questionnaires assessing fatigue (Checklist Individual Strength-20), DSRB (Dysfunctional Beliefs and Attitudes about Sleep-16), PSA (Pre-Sleep Arousal Scale), and insomnia severity (Insomnia Severity Index). The Consensus Sleep Diary tracked NoA and sleep efficiency daily for one week. Two multiple regression analyses were performed to assess the relationship between sleep-related psychological factors (DSRB, PSA), subjective sleep characteristics (insomnia severity, NoA, sleep efficiency) and fatigue. Age, gender, and depression were included as controlling variables. Results showed that DSRB (β = .174, p = .027), PSA (β = -.160, p = .036), and insomnia severity (β = .243, p = .002) were factors associated with fatigue in insomnia patients. More severe DSRB and higher insomnia severity predicted elevated levels of fatigue. Contrary to expectations, PSA was negatively associated with fatigue. Lastly, NoA and sleep efficiency were not related to fatigue. This study uncovered connections between more severe DSRB, lower PSA, and higher insomnia severity that led to higher levels of fatigue. The current study suggests that improvements in DSRB and reducing insomnia severity may reduce fatigue of insomnia patients with long-term medical conditions. Sleep interventions should emphasize on challenging these DSRB. Future research is needed to examine the complex relationship between PSA and fatigue, as well as whether changes in DSRB during CBT-I treatment reduce fatigue symptoms in this population.Show less
This thesis explores the impact of gain-framed messages on psychological detachment from work among self-employed workers, considering the moderating effects of financial stress and message trust....Show moreThis thesis explores the impact of gain-framed messages on psychological detachment from work among self-employed workers, considering the moderating effects of financial stress and message trust. Using an experimental between-subject design with online surveys, 225 UK-based participants were randomly assigned to control or gain-framed message conditions. The gain-framed message conditions included health-gain and work-performance-gain. Surprisingly, participants in the control group showed more detachment than those in the message conditions, challenging previous literature. Contrary to the expectations, the moderating effects of financial stress and message trust were not found. Despite limitations, such as a sample limited to the UK and the use of a questionnaire, the research contributes new insights into messaging effects on preventive behaviors. It underscores the importance of context and individual differences in message reception and behavior, and urges future research to consider the effectiveness of gain-framed messages in motivating people to adopt certain behavior.Show less
Research suggests a prominent relationship between self-esteem and social evaluation, such that individuals with low self-esteem may show biased perceptions of social evaluation. This study...Show moreResearch suggests a prominent relationship between self-esteem and social evaluation, such that individuals with low self-esteem may show biased perceptions of social evaluation. This study examines interactions between self-esteem, attachment styles, and neural sensitivity to social feedback using electroencephalography (EEG). The focus was on the Feedback-Related Negativity (FRN) component, indicative of neural sensitivity to expectancy violations in social feedback. It was hypothesized that low self-esteem would predict greater FRN during the SELF-Profile task, with insecure attachment styles adding to the variance of this relationship. Individuals with insecure attachment styles were also predicted to underestimate proportions of acceptance feedback received during the task, with low self-esteem and an insecure attachment predicting a lower proportion of expected acceptance feedback. Eighty adolescents aged 12-to-18 years (60 females, 20 males) participated in this study. Participants completed the SELF-Profile task, involving receiving probabilistic feedback from peers on social-media-like profiles, mimicking real-word scenarios of social feedback and potential uncertainties around these interactions. Participants indicated their perception of the interaction, reporting percentages of perceived social acceptance from peers. EEG recordings were conducted throughout this task. Results demonstrated that participants with low self-esteem exhibited heightened FRN amplitudes in response to positive incongruent feedback, suggesting increased sensitivity to unexpected positive social feedback. Moreover, individuals with insecure attachment styles show trends of amplified neural reactivity to social feedback which was visible in FRN outputs. Regression analyses additionally found significant correlations between self-esteem, attachment style and overall expectation of social feedback (positive and negative), with self-esteem explaining most of the variance. These findings elucidate neural mechanisms underlying feedback processing in relation to self-esteem and attachment, suggesting that low self-esteem and insecure attachment styles influence our social feedback sensitivity and expectation. Results provide insights for clinical practice suggesting the importance of improving self-esteem when working on client difficulties in social settings through positive feedback reinforcement.Show less
Climate change is a serious threat to the future ecological environment, and household behaviors contribute significantly to greenhouse gas emissions. Engaging young people in sustainable household...Show moreClimate change is a serious threat to the future ecological environment, and household behaviors contribute significantly to greenhouse gas emissions. Engaging young people in sustainable household behaviors is crucial to reduce their carbon footprints. Therefore, this study aimed to investigate whether young adults’ perceived need for autonomy, relatedness, and competence vary across different living situations (Deci & Ryan, 2000) and if these needs, in turn, promote their motivation to perform pro-environmental behavior (PEB). The hypothesis was that students living in peer co-residentials experience higher levels of these needs, leading to increased PEB. Methods: This observational and cross-sectional study was part of the Horizons research project. The participants included students (N = 214), aged 16 to 26. The Needs-satisfaction Scale (Sheldon et al., 2001) was used to measure perceived autonomy, relatedness and competence for PEB. A modified version of the Behavior-based Environmental Attitude Scale for adolescents (Kaiser et al., 2007) was used to assess PEB. Living situations were categorized as peer co-residentials, parental homes, and other households. One-way ANOVAs were performed to analyse the levels of the needs across the household types. A between-subject ANCOVA was performed to analyse the main effects of household, autonomy, relatedness and competence on PEB, including interaction effects. Results: No significant differences were found in the levels of perceived needs across the household types, p >. 05. Similarly, no main effects on PEB were identified, p >. 05. However, a significant interaction effect between perceived competence and household type on PEB was observed, F(3, 204) = 4.55, p < .001. Regression analysis revealed an interaction between perceived competence and PEB within in parental households, F(1, 74) = 4.39, p = .04, with competence having a significant and positive effect on PEB, b = .77, t(75) = 2.09, p < .001. Conclusion: Within parental homes, students who perceived more competence while performing PEB were more inclined to engage in PEB. Except for this effect, the findings revealed no significant differences in perceived needs or levels of PEB across household types. This study highlights that young adults’ perceived competence in parental homes plays a role in their environmental engagement. Future research may explore how parent-child relationships continue to shape young adult’s perceived needs after they move out. Understanding these dynamics can inform programs aimed at engaging young adults’ pro-environmental behavior, leading to reduced household carbon footprints over time.Show less
The global prevalence of Alzheimer’s disease is expected to rise from 50 to 152 million cases by 2050 due to the limited availability of therapeutic and preventive strategies and ageing populations...Show moreThe global prevalence of Alzheimer’s disease is expected to rise from 50 to 152 million cases by 2050 due to the limited availability of therapeutic and preventive strategies and ageing populations. Although digital tools can address the growing gap between healthcare supply and demand, their implementation is difficult, and personal factors can influence individuals’ intention to use such tools. Thus, this study explores the relationship between various personal factors, as self-reported by healthy individuals (N = 507) who are part of a brain research registry, and their intention to use and promote using digital tools in the context of brain health and dementia. According to the hypothesis formulated for the research, higher financial scarcity, lower educational attainment, and lower employment status predict lower intention to use and promote digital tools for brain health. The study examined four distinct digital tools: (1) MijnBreincoach (a prevention tool), (2) cCog (a diagnostic tool), (3) ADappt (a patient- orchestrated care tool), and Neurokeys (a prediction tool). It was found that Neurokeys exhibited the highest score for intention to use but the lowest score for intention to promote. In addition, medium and high educational attainment predicted higher behavioral intention to use MijnBreincoach, while the most beneficial (i.e., most secure, stable, and safe) employment status predicted higher intention to promote MijnBreincoach and cCog. In conclusion, it is important to recognize differences in intention to use and promote different types of digital tools across potential users and the influence of personal characteristics on the intention to use and promote digital tools for brain health. During the development of a digital tool, it is recommended to consider which target audience would derive the greatest benefit from it and tailor it accordingly.Show less
This 3-wave study aims to examine the relationship between cognitive empathy (awareness and understanding of another’s emotion), affective empathy (experience of emotions consistent with those of...Show moreThis 3-wave study aims to examine the relationship between cognitive empathy (awareness and understanding of another’s emotion), affective empathy (experience of emotions consistent with those of the observed person), and self-perception of close friendships (one’s perception of the ability to form and maintain close friendships), both directly and indirectly through prosocial behavior (voluntary behavior intended to benefit another person) from late childhood to early adolescence. Participants were 127 adolescents aged between 10 and 14 years old who reported on their empathy, prosocial behavior, and self-perception of close friendships in three consecutive years, respectively. Simple mediation analyses revealed that cognitive and affective empathy did not have a significant positive effect on adolescents’ self-perception of close friendships two years later. Considering these findings, prosocial behavior was not found to be a mediator between adolescents’ cognitive or affective empathy and their self-perception of close friendships from late childhood to early adolescence. Moreover, cognitive and affective empathy did not significantly predict prosocial behavior one year later, whereas prosocial behavior did significantly predict the self-perception of adolescents’ close friendships one year later. These results underline the significance of developing tailored intervention programs targeting prosocial behavior to foster adolescents’ self-perception as close friends, a competence that is crucial during this developmental period considering the greater influence of peers.Show less
As more environmental challenges arise, pro-environmental engagement becomes increasingly important. While sustainable diets are widely acknowledged for their ecological benefits, the interplay of...Show moreAs more environmental challenges arise, pro-environmental engagement becomes increasingly important. While sustainable diets are widely acknowledged for their ecological benefits, the interplay of social-emotional factors shaping such choices remained relatively underexplored. This study explored the interplay between guilt proneness, emotional support from best friends, and open- mindedness and their influence on young adults’ pro-environmental dietary choices. These variables were selected for their distinct impacts on decision-making processes and behavioural intentions, as guilt proneness motivates alignment with moral values, emotional support provides social reinforcement and validation, and open-mindedness encourages adoption of atypical diets. Plant-based diets involve (mostly) excluding meat including variations like flexitarian and pescetarian diets, while vegetarian diets exclude meat, and vegan diets exclude meat and animal-derived foods and products. The dietary choices in this study rank from the least to the most sustainable diet, being omnivores, plant-based, vegetarian, and ultimately, vegan. The cross-sectional design incorporated 213 individuals aged 17 to 26 from multiple genders and nationalities. The multiple stages assessment included a 45-minute online survey that employed specific tests to assess the factors. Dietary choice was assessed using the Dietarian Identity Questionnaire, guilt proneness using the Test of Self-Conscious Affect–3, emotional support from best friends using the Official short version of the Network Relationship Inventory, and open-mindedness using the Big Five Inventory-2. The multiple regression analyses indicated that guilt proneness, emotional support from best friend, open-mindedness, and the three-way interaction of these variables were non-significant predictors of dietary choice. These results diverged from initial hypotheses, emphasizing the need for exploration within different contexts and populations. The study's strengths included its cross-sectional design encompassing multiple nationalities and genders, and the thorough validation of statistical assumptions. However, the questionable to low reliability of some measures and the unequal gender distribution possibly affected the generalizability of the findings. Additional factors that may influence dietary choices among young adults, including cultural norms, socioeconomic status, anticipated pride, and peer influence, should be incorporated in future research. Interventions aimed at promoting pro- environmental dietary choices among young adults must adopt a holistic approach, considering individual, social, and environmental factors to facilitate long-term behaviour change.Show less
There are numerous people that experience financial hardship. It is important that they get support to get financially back on track. However, they often refrain from seeking help, likely due to...Show moreThere are numerous people that experience financial hardship. It is important that they get support to get financially back on track. However, they often refrain from seeking help, likely due to the shame associated with their financial situation (Keizer, 2016; Plantinga, 2019). This shame hinders their ability to adopt problem-focused coping strategies and consequently improve their financial circumstances (De Hooge et al., 2010). However, shame resilience shows a promising role in addressing this issue. It involves reducing feelings of entrapment, powerlessness, and isolation, thereby managing feelings of shame in a way so that enables people to effectively deal with their situation (Brown, 2006). This study investigates the effectiveness of shame resilience interventions in increasing communication between creditors and debtors. We conducted an experiment involving participants in debt and manipulated creditor letters to increase shame resilience. Results indicate that shame resilience interventions significantly increase willingness to contact creditors and improve the perceived trustworthiness of the company. These findings suggest that applying shame resilience interventions can assist people in taking the first step toward seeking help to address their debt.Show less
Mental health problems such as anxiety and depression among young people are a growing public health problem worldwide. To address this effectively, it’s important to understand to what extend...Show moreMental health problems such as anxiety and depression among young people are a growing public health problem worldwide. To address this effectively, it’s important to understand to what extend factors such as academic stress, parental expectations and family well-being influence the development of anxiety and mood disorders. Relatively little is known about the anxiety and worry experienced by early adolescent children and the extent to which this is culture dependent. The present study sought insight in the worries of children aged 10-12 years from Western and non-Western cultural backgrounds. In addition, the extent to which internalizing symptoms are related to achievement anxiety, parental expectations and family well-being was examined. This was done by interviewing 74 Indian children (M = 10.92 ; SD = 0.75) and 69 Dutch (M = 11.17 ; SD = 0.92) children using the Cultural Formulation Interview. In addition, the amount of internalizing complaints and family welfare were determined using RCADS and FASIII. Results showed that children from India more often experienced achievement-oriented anxiety than Dutch children, and that this was associated with a greater amount of internalizing symptoms. The parental expectations that Indian children experienced were often achievement-oriented expectations regarding school or future profession, whereas the parental expectations of Dutch children were more often focused on being able to show responsibility for tasks. This might be explained by the values transmitted from parent to child within individualistic and collectivistic culture. Evidence exists that cultural values remain present when families from collectivist cultures move to a country with a more individualistic culture. It is therefore extremely important to be aware of these cross-cultural differences within mental health care, as well as education, when dealing with adolescents with anxiety and mood problems.Show less
