There is increasing evidence for the negative effect of external aid programs on public health. Accordingly, it is essential to research how donors could effectively allocate their aid. It is...Show moreThere is increasing evidence for the negative effect of external aid programs on public health. Accordingly, it is essential to research how donors could effectively allocate their aid. It is established that institution-building in the health sector is crucial for enhancing public health, for example by fostering accountability and transparency. Aid that is spent on institution-building is expected to have a positive effect on public health. However, there is no empirical evidence for that, and therefore, this research contributes to the existing literature by answering the following research question: What is the effect of aid targeting institution building in the health sector on public health outcomes? Several linear regressions are performed to test the effect of Official Development Assistance for institution-building in the health sector on infant mortality, life expectancy, and immunization rates. The overall research findings show a positive, but small and insignificant relationship between health institutional aid and public health.Show less
In deze scriptie wordt de relatie tussen het eeuwenoude Pyrronistisch Scepticisme en gemoedsrust onderzocht. Aan de hand van Sextus Empiricus worden we meegenomen in de zoektocht naar ataraxia....Show moreIn deze scriptie wordt de relatie tussen het eeuwenoude Pyrronistisch Scepticisme en gemoedsrust onderzocht. Aan de hand van Sextus Empiricus worden we meegenomen in de zoektocht naar ataraxia. Ataraxia oftewel gemoedsrust, is een staat waarin men vrij is van zorgen en angsten. Volgens Sextus is het bereiken van gemoedsrust niet alleen een therapeutische vaardigheid, maar ook een manier van leven. Deze Pyrronistische manier van leven houdt in dat overtuigingen ten aanzien van non-evidente zaken worden opgeschort om zo gemoedsrust te bereiken. In dit onderzoek is onderzocht of de filosofie van het Pyrronisme ons kan helpen in ons dagelijks leven met onze angsten en stress. Om Pyrronisme te meten is er een vragenlijst opgesteld met non-evidente stellingen (NE-Q). Voor het meten van angst is de GAD-7 gebruikt en voor het meten van stress is de PSS gebruikt. De eerste hypothese was dat sterkere overtuigingen een negatieve relatie hebben met gemoedsrust. De tweede hypothese was dat de relatie tussen sterkere overtuigingen en gemoedsrust verzwakt wanneer men aan mindfulness doet. De hoofdrelatie was niet significant met zowel de GAD-7 als de PSS als afhankelijke variabele. Ook was de moderatieanalyse in beider gevallen niet significant. Wel bleek bij verdere visuele inspectie dat het doen van mindfulness leidde tot meer angst en stress, in tegenstelling tot wanneer men niet aan mindfulness deed. Dit onderzoek wijst uit dat de filosofische stroming van het Pyrronisme als psychotherapie niet toepasbaar is voor de behandeling van angsten en stress in de hedendaagse tijd. Ook kan geconcludeerd worden dat mindfulness de relatie tussen het hebben van sterkere overtuigingen en gemoedsrust niet beïnvloedt.Show less
The International Monetary Fund has often been criticised on account of its tendency to be lenient in loan conditionality to certain countries that it considers important. This research seeks to...Show moreThe International Monetary Fund has often been criticised on account of its tendency to be lenient in loan conditionality to certain countries that it considers important. This research seeks to narrow in on the effect of economic importance from the perspective of western donor states on IMF loan efficacy. Apart from providing a gap in the research, this topic is deemed important because of its value for developmental economics and upcoming issues in that field. Moreover, the results allow concrete policy decisions to be made. Employing a bivariate and multiple linear regression analysis, this paper seeks to answer the question what is the effect of the perceived economic importance of states for western actors on the efficacy of loans by the IMF? In foreshadowing results, this paper finds that a higher economic importance, and high rates of accountability and corruption, lead to a lower efficacy of IMF loans. It is argued that this is the case because of the moral hazard issue, time-inconsistency problem, and the structure of the IMF. The model does however lack full robustness.Show less
Research master thesis | Developmental Psychopathology in Education and Child Studies (research) (MSc)
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This thesis is part of a multi-lab eye-tracking project investigating implicit Theory of Mind (ToM) in toddlers and adults (ManyBabies2). Given the recent number of unsuccessful replications in...Show moreThis thesis is part of a multi-lab eye-tracking project investigating implicit Theory of Mind (ToM) in toddlers and adults (ManyBabies2). Given the recent number of unsuccessful replications in this field, the focus of this thesis lies in investigating the impact of methodological considerations regarding data quality on the obtained results. Specifically, this thesis addresses differences in eye-tracking data quality (accuracy, precision, and data loss) between toddlers and adults. Further, it examines how differences in data quality (precision and data loss) affect the dependent variables in an anticipatory looking (AL) task to measure ToM, and whether the results of the AL task change by adjusting the parameters of a standard fixation classification algorithm (i.e., the Tobii I-VT filter) to account for low data quality. A total of 16 adults and 16 toddlers (N = 32) participated in the ManyBabies2 study at the Leiden University lab. The AL task included two test trials with an ignorance and knowledge condition, during which participants’ looking behavior (first look and proportion differential looking score [DLS]) was measured. The results showed a significant difference in average data quality between toddlers and adults, with toddlers having lower accuracy and precision and higher data loss than adults. Moreover, the results indicated that data loss significantly affects proportion DLS in the ignorance and knowledge condition. However, no differences in AL looking behavior were found between the Tobii I-VT default and adjusted parameters. The findings of this thesis emphasize the need for consistent reporting of data quality. Future research should conduct larger-scale studies to validate and expand upon the findings in this thesis, and focus on refining the fixation classification algorithm parameters of the Tobii I-VT filter to adjust for differences in data quality.Show less
This thesis examines how brain drain can be problematized in light of relational egalitarianism. This approach views the existing economy as that of joint production as it relies heavily on mutual...Show moreThis thesis examines how brain drain can be problematized in light of relational egalitarianism. This approach views the existing economy as that of joint production as it relies heavily on mutual dependency between citizens. Here, it aims to find whether the moral duty citizens hold towards one another can legitimately place restrictions on freedom of movement in the case of brain drain. Through taking relational egalitarianism to its normative furthests, it becomes clear that the right to exit can legitimately be constricted.Show less
Research master thesis | Psychology (research) (MSc)
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Poverty in the UK has increased, particularly after the Covid-19 pandemic. To prevent people from falling into a poverty trap, it is important to understand how financial scarcity affects financial...Show morePoverty in the UK has increased, particularly after the Covid-19 pandemic. To prevent people from falling into a poverty trap, it is important to understand how financial scarcity affects financial decisions involving risks. This topic lacks consensus in the literature with some authors arguing for a tendency towards more risk-taking, while others arguing for more risk aversion. This study posits that the risk tendency is influenced by frames of gains and losses. More specifically, financial scarcity leads to more risky choices in the domain of losses (H1), whereas it leads to less risky choices in the domain of gains (H2). People in financial scarcity tend to experience negative affect that impacts their cognitive systems, leading to more reliance on System 1 thinking, which exacerbates biases, such as the reflection effect. To test the hypotheses an online survey was conducted and 200 participants from the UK were recruited via Prolific Academic. The participants were divided into two groups for the manipulation of financial scarcity using the household task. Half of the participants were in the debts condition (financial scarcity), whereas the other half were not (control). Subsequently, all participants were presented with six risky choices, where they had to choose one of two options (one risky, the other conservative) framed in both gains and losses and three combinations of probabilities. Results from a Generalized Mixed Model showed that the cognitive bias associated with the reflection effect was found to be equally present in everyone and was more pronounced for more extreme probabilities (e.g., 10%/90% and 20%/80%), but not for moderate probabilities (e.g., 40%/60%). Thus, the expected interaction between debts and frames was not confirmed. It is suggested that future studies use an intuitive decision-making manipulation with more extreme probabilities (e.g., 1%/99%), consider a field risk manipulation, an incentivized lottery and the same expected value within and between probabilities at the lottery.Show less
While honesty itself is a widely researched topic, most research has been done on human-human interactions. This laid the foundation for many similar studies and a rapidly expanding literature on...Show moreWhile honesty itself is a widely researched topic, most research has been done on human-human interactions. This laid the foundation for many similar studies and a rapidly expanding literature on honesty for human-avatar and human-robot interaction studies. This experiment builds on such research. In the current study, we intended to determine how much (dis)honest behavior participants would display during a coin-toss game with three agents: a robot, an avatar, and a human confederate. In all three conditions, the agents’ pupil size had been manipulated to be either dilated or constricted form. There were three blocks, with 18 trials each. The trials were counterbalanced. We hypothesized that the participants would be more honest with the agents with dilated pupils compared to constricted pupils, as previous studies have shown that people with dilated pupils are perceived more positively. Additionally, we hypothesized that overall, the participants would show more honest behavior when interacting with the confederate because human-to-human contact is familiar and not (yet) comparable to human-AI (Artificial Intelligence) contact. Curiously, results show that our first hypothesis is not met, as pupil size did not have a significant effect (p = .171). Our second hypothesis is partly met as there was a significant difference between the human condition and robot condition (p = .007), but not between human condition and avatar condition.Show less
Suicide is a pressing, global concern, with a growing number of adolescents affected. Present research tends to focus on external factors, for example, stressful life events. Internal factors, like...Show moreSuicide is a pressing, global concern, with a growing number of adolescents affected. Present research tends to focus on external factors, for example, stressful life events. Internal factors, like defence mechanisms, remain understudied. This investigation aimed to explore variations between categories of defense mechanisms used by university students in the Netherlands, with respect to their suicidal ideation scores. A total of 115 participants engaged in the cross-sectional research design. The questionnaires used were the Suicidal Ideation Attributes Scale (SIDAS) and Defence Mechanisms Rating Scale-Self Report-30 Items (DMRS-SR-30). To assess these variations, a one-way ANOVA with a Bonferroni Correction was applied. The expectation was differences being present between used defensive categories, regarding varying scores of suicidal ideation. Gender was acknowledged as a potential influential factor. Significant differences were found within Category 1: Mature and Category 2: Neurotic in relation to the SIDAS scores (p < 0.001, p = 0.002), indicating differing scores of suicidal ideation within these groups. Category 3: Immature, as well as the subgroups Non-Depressive and Depressive, did not exhibit any significant variations within the SIDAS scores (p = 0.341, p = 0.882, p = 0.406), suggesting lack of differences in suicidal ideation scores among individuals in these categories. Gender was found to play a role in the association between suicidal ideation scores and each defensive category (all p < 0.05). The analysis revealed variations within the categories, due to the unavailability of finding the differences between them. Consequently, although the research question and hypothesis were not entirely validated, valuable information and findings were obtained pertaining to this subject. Implications of this research regard both practical aspects, such as new prevention strategies being designed, and theoretical factors, including further comprehension on psychological mechanisms of defence.Show less
Research master thesis | Developmental Psychopathology in Education and Child Studies (research) (MSc)
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Prediction-based and repetition-based learning are two learning strategies, differing most profoundly in their depth of processing. In repetition-based learning, students repeat information shortly...Show morePrediction-based and repetition-based learning are two learning strategies, differing most profoundly in their depth of processing. In repetition-based learning, students repeat information shortly after learning it, while in prediction-based learning, students make a prediction before learning the information. This study aims to compare the effectiveness of the two learning strategies for memory recall, as well as consider the influence of age, the magnitude of the prediction errors, and the involved brain areas. It seeks to enhance the educational debate on these learning strategies by uncovering the strategies' mechanisms and guiding educators on their effective use. To accomplish this, 28 young adolescents and 46 young adults were scanned in an MRI scanner while learning numerical facts using both strategies: predicting and repeating. The study explored the influence of strategy, age group, and prediction error on memory recall. Furthermore, it investigated strategy-specific and age-specific differences in the medial temporal lobe (MTL), striatum, anterior cingulate cortex (ACC), and dorsolateral prefrontal cortex (DLPFC). While it was expected that prediction-based learning would result in better learning for both age groups as it requires deeper processing, results showed that adults had improved memory for repetition compared to prediction, whereas adolescents did not show a significant difference between the two learning strategies. Within prediction-based learning, adults showed increased memory for small and large prediction errors, while adolescents only did for large prediction errors. Lastly, among the investigated brain areas, the ACC, which is involved in error detection, showed the most prominent role in prediction-based learning.Show less
This research paper aims to investigate the safety and efficacy of the newly emerging online approach to psychedelic ceremonies as well as explore the impact set and setting have on the experience....Show moreThis research paper aims to investigate the safety and efficacy of the newly emerging online approach to psychedelic ceremonies as well as explore the impact set and setting have on the experience. Previous research has demonstrated and explored the benefits of psychedelics and their impact on mental health. Nonetheless, no study has yet investigated the potential benefits of psychedelics in an online setting. Therefore, this study recorded the experiences of average people who participated in Spinoza’s online psychedelic ceremonies by means of a voluntary questionnaire. Results showed a significant increase in mental health, compared to baseline, for almost all participants. Additionally, individual differences and setting seemingly had no significant impact on the trip experience. This study provides an insight into the potential experiences of virtual psychedelic ceremonies, contributing to the growing research within the field of psychedelics.Show less
Bachelor thesis | Cultural Anthropology and Development Sociology (BSc)
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Iedereen kent de beelden van de protesten voor Black Lives Matter in de Verenigde Staten. Groepen mensen die massaal bijeen kwamen om zich te verzetten tegen het structureel racisme dat afro...Show moreIedereen kent de beelden van de protesten voor Black Lives Matter in de Verenigde Staten. Groepen mensen die massaal bijeen kwamen om zich te verzetten tegen het structureel racisme dat afro-Amerikanen dagelijks meemaken. Verder zijn er internationaal ook veel demonstraties om het milieu te verbeteren, zoals schilderijen die worden besmeurd door klimaatactivisten. Deze protesten waren te zien op verschillende media’s en hebben een grote indruk achtergelaten. Racisme en milieuvervuiling zijn beide prominente problemen in de maatschappij en deze kunnen elkaar versterken. Dit is terug te zien bij milieuracisme. Bij milieuracisme wordt een bepaalde groep vanwege hun huidskleur meer benadeeld door milieuvervuiling dan witte mensen. Zwarte mensen hebben door structureel racisme al een grotere differentiële kwetsbaarheid. Dit betekent dat zij op de gebieden toegang tot middelen, politiek en bestuur, cultuur en kennis en informatie te kort komen vergeleken met witte mensen in hun omgeving.Show less
Research master thesis | Psychology (research) (MSc)
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Within negotiations individuals differ in their motivation to reach certain outcomes over others (outcome orientation). These differences may exaggerate as asymmetrical power dynamics impose...Show moreWithin negotiations individuals differ in their motivation to reach certain outcomes over others (outcome orientation). These differences may exaggerate as asymmetrical power dynamics impose disadvantageous conditions for some individuals within a group. As such restrictions may limit an individual’s ability to realise its interest in certain outcomes, individuals may evoke compensatory mechanisms to alleviate these disadvantages. Building on previous studies (Van Tol & Steinel, 2019), we propose that creative cognitions (e.g., flexibility or originality) may qualify as such potential compensatory mechanism. Consequently, we predict that the effect of individual outcome orientation in relation to an asymmetrical dispersion of power within groups may motivate compensatory engagements in creative behaviours that aim to alleviate the effects of disadvantageous situational constraints. To this end, 150 participants took part in a three-person fictious face-to-face online study. Participants were randomly assigned to either a powerful, powerless, or equal power condition, whilst further differentiations ensured individualistic and collectivistic outcome orientations. Upon reading the instructions, participants completed both a flexibility and an originality task. Results of a 2 (social motive: pro-social vs. pro-self) x 3 (relative power: powerless vs. equal power vs. powerful) ANOVA, as well as a 2 (social motive: pro-social vs. pro-self) x 3 (relative power: powerless vs. equal power vs. powerful) ANCOVA (with individual knowledge about cooking as covariate) revealed non-significant interaction effects for both flexible (ANOVA) and original (ANCOVA) compensation. Across the possible combinations of powerless and powerful, and pro-social and pro-self, participants did not differ in their creativity scores, disconfirming our hypotheses. As these null findings stand in direct contradiction to previous literature, the need for further investigation of creative cognitions in negotiations is highlighted.Show less
