Emotions significantly influence our perceptions and interactions with the environment, yet the impact of our emotional states on judging and responding to others remains underexplored. In this... Show moreEmotions significantly influence our perceptions and interactions with the environment, yet the impact of our emotional states on judging and responding to others remains underexplored. In this thesis, I examined how (romantic) attraction influences our attention (Part I), how we judge others’ intentions (Part II), and whether mimicking another facilitates bond formation (Part III). In two empirical chapters, I demonstrate that people have a strong attentional bias towards visual attractiveness and a tendency to indicate interest in establishing a romantic connection to attractive others. In the subsequent empirical chapter, I show that men are more likely to judge women they find attractive as more sexually aroused. Crucially, in a real-life dating study, I show that men who are attracted to another are more likely to assume mutual interest. Further, I introduce a framework suggesting that people align their actions and emotional states with others to foster romantic relationships. The final empirical chapter suggests that mimicking the attraction cues of others enhances bond formation. Overall, this dissertation sheds light on how attractiveness and attraction affect our attention, our social cognition, and the synchronization of actions and emotions, offering insights into the mechanisms underlying romantic connections. Show less
This dissertation focused on the neural and behavioral mechanisms underlying adolescent learning and mental health in the context of peers and friends. The neuroimaging findings revealed that... Show moreThis dissertation focused on the neural and behavioral mechanisms underlying adolescent learning and mental health in the context of peers and friends. The neuroimaging findings revealed that reward processing for self and peers rely on common reward-related brain regions, whereas a social brain region (TPJ) showed social specificity to observed outcomes for unfamiliar peers compared to friends. Moreover, typically developing adolescents and adolescents with ADHD show neural sensitivity in reward and salience brain regions towards rewards for themselves, friends and peers compared to losses. There were no group differences in neural processing of (vicarious) outcomes between adolescents with and without ADHD, yet a symptom-level approach showed more neural sensitivity for own compared to friends’ losses in individuals with more inattention symptoms. The behavioral findings indicated that adolescents’ learning performance benefitted from observing the choices and outcomes of peers irrespective of the relationship with this peer. The results did not show effects of friendship (quality) and social status on observational and academic learning, but there was a protective effect of friendship quality on internalizing problems. Taken together, these findings highlight adolescence as a period of observational learning opportunities from different types of peers. Adolescence can also serve as a window of opportunity to improve mental health by fostering high-quality friendships. Show less
Parental socialization refers to the process through which parents transmit values and beliefs to their children. During this process, children learn to understand the world and shape their social... Show moreParental socialization refers to the process through which parents transmit values and beliefs to their children. During this process, children learn to understand the world and shape their social functioning. The impact of parental socialization can vary across different cultures. My research focuses on family interactions within Chinese cultures, emphasizing the importance of cultural nuances when examining the role of parental behaviors in children's social development. The study utilized samples of Chinese children and their parents, employing various research methods, including observations, interviews, and questionnaires. The findings indicated that Chinese mothers' psychological control had a relatively minor negative effect on children's emotion regulation and social anxiety. Additionally, the research revealed racism and colorism among Chinese children, which were associated with mothers' color-evasive socialization behaviors. Chinese mothers did not avoid talking about racial appearance and cultural background, which contrasts with studies in White Western populations where most White mothers showed color evasion. Chinese mothers’ acknowledgement of shared culture predicted children’s positive attitudes towards their own racial ingroup with a darker skin tone. My research underscores the unique features of Chinese culture that play a pivotal role in shaping the nature and consequences of parental socialization on children's social functioning. It highlights that Western theories related to parenting and color-evasive socialization may need adaptation when applied to non-Western cultural contexts. Show less
Indian agriculture is widely believed to be in crisis. There is broad consensus among scholar, policymakers and activists that economic hardships and the changing climate have made sustaining a... Show moreIndian agriculture is widely believed to be in crisis. There is broad consensus among scholar, policymakers and activists that economic hardships and the changing climate have made sustaining a livelihood through farming increasingly untenable. There is a strong sense that something has to be done to help farmers deal with the crisis, and in recent years agricultural insurance has been presented as a possible fix for rural distress. This dissertation studies how a new agricultural insurance scheme called PMFBY becomes part of everyday social interactions and experiences. Insurance companies often assert that quantified procedures can accurately - and fairly - calculate the extent of agricultural risk, attach a price tag to it and protect against it. Can quantification really be the antidote to crisis? To answer this question I explore how insurance numbers translate to the everyday experiences of rural people in central Maharashtra. I find that, when seen from the perspective of those encountering them in their daily lives, the numbers are anything but straightforward. The effects of quantification were often arbitrary, and despite promises of transparency, they had a tendency to obscure rather than clarify. In short, the numbers turned out to be inconsistent and ambiguous. The dissertation describes how people attempt to make sense of this ambiguity through their moral understandings. It focusses on the (often heated) discussions, the collective pondering such discussions led to, the personal dilemmas it posed as well as the dreams and aspirations numbers became entwined with. I explore how such quandaries unfold and argue that a focus on the morality of quantification brings to light the social life of numbers beyond their 'objective' factuality. Show less
This thesis generated insights into the neural and affective signatures of connectedness between parents and adolescents and between people in general, which is operationalized by responses to eye... Show moreThis thesis generated insights into the neural and affective signatures of connectedness between parents and adolescents and between people in general, which is operationalized by responses to eye contact and empathy. Overall, our findings show that during adolescence, parents are still highly attuned to their child at the neural and affective level. In addition, adolescents report to feel more connected with their parents than with unknown others, although this was not directly reflected in stronger neural responses. Another interesting finding is that making eye contact for a prolonged period generally enhanced the socio-emotional connection between people, both between parents and adolescents and with unknown others. For individuals with a history of CEM and depressed adolescents eye contact is less socially rewarding, however, and does not seem to foster a stronger connectedness with others. Studying the psychobiological underpinnings of affiliative bonding, including the parent-adolescent bond, brings us a step closer to unraveling how such bonds are established and maintained during adolescence. And even more important: Once we know how these bonds are established, we might be better able to modify and repair these bonds in situations in which they for some reason got disrupted. Show less
Despite decades of research from psychology, anthropology, biology and economics, how social preferences arise and vary across contexts remains an open question. In three empirical chapters, this... Show moreDespite decades of research from psychology, anthropology, biology and economics, how social preferences arise and vary across contexts remains an open question. In three empirical chapters, this dissertation addresses this gap using a variety of economic games and neuroimaging techniques that allow for a tractable modeling of cooperation and competition. Overall, findings suggest that while social preferences are linked to neural structure, they can also adapt to environmental factors as well as beliefs about interaction partners. This doctoral thesis shows that interacting with ingroup or outgroup members, taking decisions publicly or privately, and knowing whether we may interact with others again affect our cooperative behavior. These results highlight the importance of understanding how prosociality may be altered and lay the foundations for policy makers to further those social environments that encourage prosocial behavior. Show less
By monitoring ongoing actions and performance outcomes, we are able to detect errors or mismatches between our intentions or predictions. Disturbances in such performance-monitoring processes may... Show moreBy monitoring ongoing actions and performance outcomes, we are able to detect errors or mismatches between our intentions or predictions. Disturbances in such performance-monitoring processes may importantly contribute to impaired adaptive behavior in clinical disorders, such as excessively impulsive behavior in externalizing disorders or excessively rigid or careful behavior in anxiety- and obsessive-compulsive disorders. In daily life, performance monitoring often takes place in a social context, where our actions have consequences not only for ourselves, but also for others. The investigation of (alterations in) such (pro)social performance-monitoring processes may help explain functional and social impairments across a wide range of clinical disorders. In this dissertation, we used various neuroimaging paradigms to examine subclinical and neurochemical influences on performance monitoring when errors had consequences for oneself or others. The studies in this dissertation indicate that neural performance-monitoring correlates are modulated by social, subclinical, and neurochemical factors, including social (responsibility) context, obsessive-compulsive symptoms, ovarian hormones, and pharmacological manipulations of dopamine and oxytocin. These findings have implications for the potential and utility of error-related brain activity as a clinical biomarker or endophenotype, our insight into social symptoms and impairments in obsessive-compulsive disorder, and for our understanding of the neurochemical mechanisms underlying performance monitoring. Show less
In my study I looked for a plausible cognitive theoretical framework for conforming behavior. The Theory of Event Coding (TEC) was the cognitive theory that offered a good basis for building this... Show moreIn my study I looked for a plausible cognitive theoretical framework for conforming behavior. The Theory of Event Coding (TEC) was the cognitive theory that offered a good basis for building this framework. I conducted an experiment using an existing study design adopted from previous studies of conformity adding a non-social condition where participants were confronted not with what they thought were other students’ choices but with random computer choices. According to TEC, a simple confrontation with an alternative behavior would affect reproduction of your own behavior at a later stage. The study results supported my theory. Unfortunately, the results were possibly influenced by Regression to the Mean. So I changed the study design to eliminate the issue. Also I wanted to see if and how conformity was affected by culture: collectivistic versus individualistic. This study was conducted partially in the lab (in the Netherlands and China) and partially online (in the USA and India). The results confirmed my initial hypothesis: the conformity effect did not differ across all experimental groups irrespective of the country or condition suggesting that people are sensitive to intervening events, but the social nature of these intervening events is irrelevant. Show less
In the realm of cognitive science, the quest to understand cognitive control has persisted for decades. Traditional notions of cognitive control have focused on inhibition through the prefrontal... Show moreIn the realm of cognitive science, the quest to understand cognitive control has persisted for decades. Traditional notions of cognitive control have focused on inhibition through the prefrontal cortex, but this dissertation challenges that perspective with a more comprehensive framework: The Metacontrol State Model (MSM). The MSM proposes that cognitive control emerges from the interplay between two opposing systems – one promoting flexibility and the other promoting persistence. These systems interact to shape our cognitive processing styles, thereby influencing our ability to effectively regulate our actions. This dissertation explores questions such as why individuals exhibit differences in cognitive control capacity and how state-related changes and trait-related predispositions impact cognitive control function. The overarching goal of this dissertation is to empirically test the MSM model and shed light on the factors that influence cognitive control. Through a series of experiments, it seeks to understand how altered states of consciousness, achieved through meditation techniques or serotonergic psychedelics, affect the balance between intentional and habitual processes. Additionally, it examines the extent to which individual trait biases serve as trans-diagnostic markers in various psychopathologies. This work comprises a literature review and six empirical articles. By integrating theory and empirical research, this dissertation takes us on a journey into the intricate world of cognitive control, shaping our understanding of how it influences our lives. Show less
Social anxiety is anxiety about negative evaluation and rejection by others. Social anxiety has been long related to reduced eye contact, this feature is seen as a casual and a maintaining factor... Show moreSocial anxiety is anxiety about negative evaluation and rejection by others. Social anxiety has been long related to reduced eye contact, this feature is seen as a casual and a maintaining factor of social anxiety disorder. However, related empirical findings were equivocal. The dissertation sought to address three key questions: (1) Whether social anxiety is featured by gaze avoidance. (2) Under which conditions socially anxious individuals display gaze avoidance. (3) To what extent subjective experience of gaze avoidance corresponds with actual gaze behavior. Using the combination of naturalistic social settings and wearable eye-trackers, the dissertation provides evidence for the relationship between social anxiety and gaze avoidance particularly in naturalistic social situation, and further reveals that the relationship depends on severity of social anxiety symptoms, type of social situation and age group. Besides, gaze anxiety is moderately associated with actual gaze avoidance. Altogether, the dissertation sheds light on the nature of gaze behavior adopted by socially anxious individuals in naturalistic social interactions. Show less
This thesis examines questions related to the prevalence of anxiety symptomatology and disorders in older adults, and compares two brief low-threshold psychological interventions (blended... Show moreThis thesis examines questions related to the prevalence of anxiety symptomatology and disorders in older adults, and compares two brief low-threshold psychological interventions (blended Acceptance and Commitment Therapy versus face-to-face Cognitive Behavioral Therapy) for older adults with anxiety symptoms in primary care. Show less
This dissertation aimed to shed light on the study of attachment theory in areas other than western, educated, industrialized, rich, and democratic (WEIRD; Henrich et al., 2010) societies that... Show moreThis dissertation aimed to shed light on the study of attachment theory in areas other than western, educated, industrialized, rich, and democratic (WEIRD; Henrich et al., 2010) societies that dominate the literature. We aimed to describe the extent to which the attachment theory core hypotheses are supported by research in Latin America and specifically in a rural Peruvian Andean area. Show less
Patients with social anxiety disorder (SAD) are 'extremely shy': they are afraid of a negative evaluation by others and avoid social situations as much as possible, with negative influence on... Show morePatients with social anxiety disorder (SAD) are 'extremely shy': they are afraid of a negative evaluation by others and avoid social situations as much as possible, with negative influence on their lives. It is therefore important to gain insight in the factors that make children and adolescents vulnerable to develop SAD.SAD often runs in families: being ‘genetically close’ to a patient with SAD substantially increases the risk to develop the disorder. The studies summarized in this thesis aim to broaden our knowledge of this genetic vulnerability to SAD, by focusing on neurobiological endophenotypes as measured with structural and functional magnetic resonance imaging. We used data from the unique Leiden Family Lab study on Social Anxiety Disorder and demonstrated that several structural and functional brain alterations were genetically linked to the disorder. These results offer novel insights in the neurobiological pathways leading to SAD, and provide clues for prevention and intervention. Show less
Life expectancy is rising fast, but not all years gained are free of disease. Therefore, many people wonder to what extent the years that we have gained are enjoyable. Studies however show that... Show moreLife expectancy is rising fast, but not all years gained are free of disease. Therefore, many people wonder to what extent the years that we have gained are enjoyable. Studies however show that life satisfaction generally remains high at old age. We investigate this surprising phenomenon using data from two cross-sectional studies. We ask 1) which factors separate older people with a low from those with a high life satisfaction? And 2) how do older people maintain their high life satisfaction despite physical decline? Compared to earlier studies, this study used large and representative populations, and a broad array of objective health indicators. Physical decline was relatively unimportant for life satisfaction, especially when mental health (operationalised as depressive symptoms and experienced loneliness) remained high. Demographic variables and social resources also had no or a small relationship with life satisfaction. Only mental health was strongly associated with life satisfaction. By investigating various ways of measuring self-rated health, we show that older people may shift their norms and values in the face of declining health. This may thus explain their high life satisfaction, in spite of physical decline. Findings are discussed in relation to other literature and implications are given. Show less
What do elections mean for a single-party regime? Can party-selected deputies do something meaningful for citizens in non-democracies? The dissertation explores how and under what conditions a... Show moreWhat do elections mean for a single-party regime? Can party-selected deputies do something meaningful for citizens in non-democracies? The dissertation explores how and under what conditions a single-party authoritarian regime instrumentalizes popularly elected congress to strengthen its rule in local society. It takes contemporary China as an empirical focus for this exploration. Instead of perceiving Chinese congress either simply as authoritarian window dressing or as an immediate catalyst for democratization, this research is devoted to examining the motivations, strategies, and behaviors of the party regime in playing the cards of congressional elections and representation to make its rule more robust and resilient. This project mainly adopts comparative case study methods, with some quantitative data serving as supportive statistical evidence. As a whole, my thesis argues that congressional election and post-election representation are two cards of China’s party regime. By strategically downplaying input electoral competition but promoting output congressional representation, the communist regime has been striving to develop a mass-line democracy as an alternative to liberal democracy, which features the “Leninist trinity” of the Party’s leadership, the rule of law, and people’s democracy, as well as a new brand of mobilized representation relying on the accountability from the top down. Show less
When trying to understand texts, readers engage in various cognitive processes. If all goes well, the engagement in these cognitive processes during reading results in the construction of a... Show moreWhen trying to understand texts, readers engage in various cognitive processes. If all goes well, the engagement in these cognitive processes during reading results in the construction of a coherent mental representation of the text, the essence of successful reading comprehension. To construct such a representation, readers need to monitor the coherence of the text and of their emerging mental representation of what the text is about. The central aim of the empirical studies described is to examine coherence-monitoring processes across development by measuring reader’s ability to detect coherence breaks during reading of narratives. The first part of this dissertation consists of three empirical studies (chapter 2-4). The first study examined whether good and poor comprehenders at age 8-9 and 10-11 detected coherence-breaks during and/or after reading. The second study builds on the first study by examining the protracted development of coherence monitoring in an adolescent population (ages 10-22) using the same task under more challenging circumstances. The third study explored the neural correlates of coherence-break detection in young adults in an fMRI study. The second part of this dissertation consists of two conceptual chapters in which the results are summarized and discussed in a broader theoretical perspective (chapter 5-6). Show less
The general aim of the studies in this dissertation is to provide more insight in the role of family characteristics, parent characteristics, and child characteristics in early child emotion... Show moreThe general aim of the studies in this dissertation is to provide more insight in the role of family characteristics, parent characteristics, and child characteristics in early child emotion socialization and children’s social-emotional development. In Chapter 2 the degree to which fathers and mothers elaborate on emotions with their daughters and sons is examined from toddlerhood to preschool age. In addition, the role of gender stereotypes in parents’ use of emotion talk is examined. Chapter 3 reports on the role of the gender combination of siblings on everyday (emotion-related) parent-child interactions. Chapter 4 focuses on the potential influence of the proportion of male siblings in fathers’ and mothers’ family of origin on their current gender-typed parenting characteristics, including parents’ gendered use of emotion talk. In addition to a direct relation between parents’ family background and their gender-typed parenting, an indirect effect through parents’ testosterone levels is tested. In Chapter 5 a mediation model is tested in which the link between parents’ psychopathology symptoms and preschoolers’ social-emotional functioning is mediated by the degree to which parents elaborate on negative emotions with their children. Finally, in Chapter 6 the main findings of these empirical studies are reviewed and integrated. Show less
Parenting influences many aspects of child development, including socio-emotional, cognitive, and behavioral outcomes. Yet most studies report only modest effect sizes. An increasingly likely... Show moreParenting influences many aspects of child development, including socio-emotional, cognitive, and behavioral outcomes. Yet most studies report only modest effect sizes. An increasingly likely explanation is that not all children are equally affected by environmental factors, including parenting. The differential susceptibility theory proposes that some children might be more susceptible to both positive and negative environmental influences, compared to other children. Such differences in susceptibility are thought to be due to genetic, temperamental, or physiological susceptibility factors. In the current thesis, we tested the theory of differential susceptibility of children to the effects of parenting in a large population-based cohort, the Generation R Study. Doing so, we went beyond common methods. First, we investigated differential susceptibility from a developmental perspective by including multiple measures over time. Second, we went beyond single-gene/polymorphisms in the investigation of gene-environment interplay by aggregating genetic variation in a set of dopamine genes. Third, we extended previous research on mild perinatal adversity as a susceptibility factor by examining its moderating role in the association between harsh parenting and hair cortisol levels, taking into account background factors that we demonstrated to be of influence on hair cortisol levels. Show less
Adolescence, defined as the transition phase between childhood and adulthood, is a time of many physical, cognitive and social-emotional changes. It is a natural time of exploring, thrill seeking,... Show moreAdolescence, defined as the transition phase between childhood and adulthood, is a time of many physical, cognitive and social-emotional changes. It is a natural time of exploring, thrill seeking, and for eventually setting long-term goals and aspirations. One of the most prominent findings is that adolescents take more risks than children or adults. The focus of this thesis is on adolescent risk taking behavior. The goal is to identify individual difference factors that are related to risk taking behavior and assess how these variables change over development. Adolescence is associated with major changes in hormonal levels, brain function and social environment. In this thesis it is tested how changes in pubertal development, brain function and social environment together influence real life risk taking. The studies in this thesis show that neural responses to rewards in the striatum are elevated during adolescence. This response is influenced by chronological age, pubertal development, personality and the social context. Importantly, the striatum response to rewards is related to real life risk taking behavior and therefore has functional relevance. The results of this thesis provide vital insight in the complex relationship between reward processing and real life risk taking behavior. Show less
The analysis of the relationship between legitimacy and reform is complex. This is because 'political reform' consists of an array of institutional reforms.The general question guiding this project... Show moreThe analysis of the relationship between legitimacy and reform is complex. This is because 'political reform' consists of an array of institutional reforms.The general question guiding this project is whether the introduction of reform helps boost the legitimacy of the democratic system: does the impact of reform on legitimacy vary with the type of reform, or with the process of reform. To answer these questions, this study also seeks to establish how many reforms have taken place, what types of reform have been introduced and under what circumstances these reforms occur. Show less
