For children with Autism Spectrum Disorder (ASD), social contact can be particularly challenging, which can impact their level of peer acceptance. This study aimed to explore the relationship...Show moreFor children with Autism Spectrum Disorder (ASD), social contact can be particularly challenging, which can impact their level of peer acceptance. This study aimed to explore the relationship between social contact and peer acceptance among children with ASD. We hypothesized that children with ASD had fewer contacts and were less accepted by peers than children without ASD. Furthermore, we hypothesized that increased social contact was associated with greater levels of peer acceptance for both children with and without ASD, but less strong for children with ASD in comparison to children without ASD. With a novel approach, this study documented the amount of social contact and the level of peer acceptance of 95 children in two special education schools in the Netherlands. The sample included 46 children with (Mage = 10.2, SD = 1.0) and 49 children without ASD (Mage = 11.3, SD=1.0), with an age range from 8 to 13 years, who were observed through proximity tags to measure social contact, and the LITOP questionnaire was utilized to assess the level of peer acceptance. MANOVA was employed to investigate whether children with ASD had fewer contacts and were less accepted than their peers without ASD and the hierarchical regression analysis was used to examine the potential relationship between social contact and peer acceptance and. Surprisingly, children with ASD engaged in contact with more partners and were more accepted than children without ASD, despite the expectedly shorter duration of contact. Moreover, no significant relation was found between social contact and peer acceptance, for the two groups alike. These findings indicate that peer acceptance may not solely depend on the quantity of contact, but rather on the quality and context. Consequently, it is advised that educators facilitate structured social activities to facilitate finding similar peers and shared interests. Further research is required to gain a deeper understanding of the nature of the contact and its emotional aspects, with the aim of developing more effective strategies for enhancing peer acceptance among children with ASD. This could be achieved through a combination of quantitative measurements, such as proximity tags and qualitative measurement, including observationsShow less
Food waste is a global problem, which necessitates addressing. A pilot (N = 56) and main study (N = 124) used online survey research to explore the expected negative relationship between viewing a...Show moreFood waste is a global problem, which necessitates addressing. A pilot (N = 56) and main study (N = 124) used online survey research to explore the expected negative relationship between viewing a food waste reduction-poster and food waste intentions, the expected negative relationship between self-efficacy and food waste intentions and the expected moderating effect of self-efficacy on the relationship between poster and food waste intentions. In the main study, participants were randomly allocated to a poster (N = 31) or control condition (N = 30) without a poster. Repeated measures ANOVA showed no differences between groups nor within participants when comparing food waste intentions between two measurement points. Regression analyses showed neither a main- nor a moderating effect of self-efficacy on the relationship between seeing the poster and food waste intentions. Limitations, suggestions and implications were discussed and the importance of future research into this subject was highlighted.Show less
Objective Recent research has found conflicting interactions between health and different domains of physical activity (PA). Occupational physical activity (OPA) seems to negatively impact health,...Show moreObjective Recent research has found conflicting interactions between health and different domains of physical activity (PA). Occupational physical activity (OPA) seems to negatively impact health, whereas leisure-time physical activity (LTPA) positively impacts health, a phenomenon known as the physical activity paradox. What remains unclear is how these different domains of PA interact with each other and how their interaction influences health. Therefore, this study aims to investigate the main and interactive effects of OPA and LTPA on physical and mental health. A better understanding of these relations can contribute to more accurate PA advice, indirectly contributing to the closure of socioeconomic health inequalities. Based on previous studies, it was expected that higher OPA would relate to higher physical and mental health problems, while higher LTPA would relate to lower physical and mental health problems. Additionally, this study aimed to answer the research question whether LTPA functions as a buffer for the negative effects of high OPA on health or as an accelerator. Methods To investigate the hypotheses and research question, data from a longitudinal panel study were used. Two data measurement points were used with a one-year time lag. The sample was heterogeneous and consisted of Dutch employees working ≥ 24-hours a week (N = 1578). Results It was found that OPA and LTPA independently did not affect physical or mental health outcomes differently. Additionally, different combinations of OPA and LTPA did not lead to an increase or decrease in both physical mobility or mental health problems one year later. However, the results did show that individuals who had high levels of both OPA and LTPA had the highest chance on developing physical health problems one year later (b = 0.393, p = <0.001). Conclusion This study shows that OPA and LTPA may have different effects on the development of physical health problems, like headache and sleeping problems. The findings suggest that the health benefits of LTPA are affected by the extent of OPA and that a combination of both high OPA and LTPA is the most unfavourable combination. This combination is associated with an increase in physical health problems. Theoretical and practical implications are discussed.Show less
This research aimed to comprehensively understand the demographics and characteristics of transgender and gender diverse (TGD) individuals seeking mental health care upon initiating gender...Show moreThis research aimed to comprehensively understand the demographics and characteristics of transgender and gender diverse (TGD) individuals seeking mental health care upon initiating gender-affirming care. Additionally, it focused on optimal integration of mental health care into gender-affirming care according to TGD individuals. Both were within the framework of an ongoing investigation at the Zaans Medical Centre. The quantitative data analysis consisted of intake questionnaire data of twenty-five TGD individuals, variables were derived from sections of the intake questionnaire. For the qualitative data analysis, seven semi-structured interviews were held with TGD individuals. The characteristics of TGD individuals consisted of self-reported psychological distress and well-being. Their relationship to requested mental health care intensity was studied through Spearman rank order correlations. The demographics included age, educational level, ethnicity, employment status, experienced income, and gender assigned at birth. Their association with requesting mental health care was explored through chi-square tests. A thematic analysis with semantic approach was performed to analyse the data. No significant correlations were found between demographic variables and mental health care requests at admission. The correlation between self-reported psychological distress and mental health care intensity was χ2 = -.003, p = .987, for self-reported psychological well-being and mental health care intensity χ2 = -.001, p = .997. Thematic analysis of interview data yielded three overarching themes: motives for seeking mental health care, recommendations for integrating mental health services into gender-affirming care, and desirable attributes of mental health care providers. Reasons for refraining from or seeking mental health care included experiencing psychological distress or good psychological well-being, experiences due to gender dysphoria, acceptance of themselves, and experienced lack of support. Suggestions for optimal mental health care integration were better and more provision of (mental) health care and travel distance to mental health care. Qualities of the ideal mental health care professional were having certain character traits such as being accepting and being specialized in TGD. Overall, this research emphasizes the importance of knowledgeability and empathetic and inclusive qualities in mental health care professionals in the treatment of TGD individuals suggesting its importance over mental health care professionals’ gender identity.Show less
Early maladaptive schemas (EMSs) are persistent dysfunctional beliefs that form in childhood and are thought to underlie chronic and recurring psychopathology. EMSs have been categorized into five...Show moreEarly maladaptive schemas (EMSs) are persistent dysfunctional beliefs that form in childhood and are thought to underlie chronic and recurring psychopathology. EMSs have been categorized into five broader schema domains. Transdiagnostic depressive symptoms entail depressive symptoms observed across various psychological disorders. We studied the relative contribution of the five EMS domains on transdiagnostic depressive symptoms in a cross-sectional within-subjects design. The sample consisted of students from Leiden University (N = 125) participating for course credit or monetary rewards, of which 91.2% were assigned the sex female at birth and 8.8% male (median age = 19, IQR = 2). Participants completed measures of the Young Schema Questionnaire 3 - short form (YSQ-S3) and the DSM-5 self-rated level 1 cross-cutting symptom measure – Adult (DSM-XC). Pearson correlations were inspected between each EMS domain and transdiagnostic depressive symptoms. A multiple regression analysis including the total scores of the five EMS domains as predictors was carried out. Individually, the EMS domains Disconnection & Rejection, Impaired Autonomy & Performance, Impaired Limits, Other-directedness, and Overvigilance & Inhibition were positively associated with transdiagnostic depressive symptoms (rs .451, .365, .289, .298, .345, p < .001), as hypothesized. The joint effect of the five EMS domains was positively associated with transdiagnostic depressive symptoms (Adj. R2 = .18, F(7, 117) = 4.88, p <.001). Interestingly, when holding the other domains constant, only the Disconnection & Rejection domain significantly predicted transdiagnostic depressive symptoms in the model (β = .44, 95% CI [.15, .74], p = .004). The domain groups the beliefs about expectations that one’s needs for security and stability will not be met predictably. Our findings suggest that each EMS domain is positively related to transdiagnostic depressive symptom severity in a university student population. The Disconnection & Rejection domain, relative to the other four domains, seems to uniquely contribute to transdiagnostic depressive symptoms. Future research could test whether identifying and changing the EMSs someone has in psychotherapy could reduce their transdiagnostic depressive symptoms across different psychological disorders. It remains a question if paying specific attention to the Disconnection & Rejection domain in psychotherapeutic treatment could improve the reduction of transdiagnostic depressive symptoms.Show less
Exposure therapy is an effective treatment for post-traumatic stress disorder (PTSD), yet a substantial number of patients fails to reach symptom relief. Therefore, a deeper understanding of the...Show moreExposure therapy is an effective treatment for post-traumatic stress disorder (PTSD), yet a substantial number of patients fails to reach symptom relief. Therefore, a deeper understanding of the underlying mechanisms may help improve the treatment. Inhibitory learning has been a recently developed approach, stating that new fear associations must be actively developed. One proposed strategy has been that of expectancy violation, in which threat expectancies are actively challenged during exposure. Actively experiencing a mismatch between expectancy and reality is supposed to benefit learning and thus improve exposure success, yet results have been mixed. The aim of this study was to expose the mechanisms of expectancy violation by analyzing the types of expectancies experienced by PTSD patients. Furthermore, the effects of the strength of these expectancies and the extent to which they change in strength during exposure on treatment success was tested. In a clinical assay, participants (N = 60) were randomized across two groups, which both received exposure therapy. The experimental group’s exposure treatment was designed to enhance expectancy violation. In both groups, PTSD symptoms were measured at baseline and follow- up, and threat expectancies were measured right before and right after exposure. Results showed that both threat expectancies and PTSD symptoms reduced significantly. However, baseline expectancy strength did not have a significant effect on the amount of PTSD symptom reduction, both in the total and the experimental group. Furthermore, the amount of expectancy change did not predict PTSD symptom reduction either. A full ranking of expectancy types was provided.Show less
Depression is a leading cause of burden worldwide, disproportionately affecting women. Brooding rumination is a symptom and a risk factor for depression. The default mode network (DMN) is active...Show moreDepression is a leading cause of burden worldwide, disproportionately affecting women. Brooding rumination is a symptom and a risk factor for depression. The default mode network (DMN) is active during brooding rumination. Inadequate suppression of this network obstructs activation of the central executive network (CEN), essential for performing cognitively demanding tasks. While previous research linked DMN suppression to depression, this has not been investigated in a healthy population. This study examined potential gender differences in the time required to switch from the DMN to the CEN in a healthy sample. Additionally, it investigated whether switching time was positively related to brooding rumination and whether this relationship differed between genders. Lastly, it explored whether functional connectivity (FC) between the DMN and the subgenual anterior cingulate cortex (sgACC) was related to brooding rumination. Results indicated a faster DMN-CEN switch in men compared to women. No relationship was found between switching time and brooding rumination in either men or women. Lastly, brooding rumination showed no relationship with sgACC-DMN FC. This study proposes a slower DMN-CEN switch as a possible neural mechanism for higher rates of depression and relapse proneness in women compared to men. Moreover, it suggests that DMN suppression may not underlie brooding rumination as a risk factor for MDD. Researchers developing preventive measures for depression aimed at reducing brooding rumination may consider targeting other neural mechanisms than DMN suppression. Future research should explore these alternative neural mechanisms to support the development of preventive measures for the onset and relapse of depression.Show less
Research master thesis | Developmental Psychopathology in Education and Child Studies (research) (MSc)
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Both youth with a substance use disorder (SUD) and youth who have experienced adverse childhood experiences (ACEs) show heightened vulnerability to psychopathology. We aimed to quantify the risk of...Show moreBoth youth with a substance use disorder (SUD) and youth who have experienced adverse childhood experiences (ACEs) show heightened vulnerability to psychopathology. We aimed to quantify the risk of comorbid disorders in SUD youth with ACE-history. Additionally, we aimed to examine relations between ACEs, overall household experience, and general distress. We used cross-sectional YIT-study data from interviews with Dutch youth (aged 16-22) upon SUD treatment entry for cannabis, alcohol, or stimulant use. We measured ACE-types experienced up until 15 years of age, past-year DSM-5 disorders, general distress (DASS-21), and overall household experience rating. Logistic regressions quantified relations between ACE sum score and anxiety, depressive, behavior, and any disorder. Higher ACE sum scores related to increased risks for a(n) anxiety (OR = 1.12, highest odds = 2.84; χ2(1) = 6.71, p < .010; Nagelkerke R2 = 0.2), depressive (OR = 1.21, highest odds = 5.43; χ2(1) = 18.11, p < .001; Nagelkerke R2 = 0.6), behavior (OR = 1.20, highest odds = 5.24; χ2(1) = 17.41, p < .001; Nagelkerke R2 = 0.6), and any (OR = 1.25, highest odds = 7.58; χ2(1) = 17.26, p < .001; Nagelkerke R2 = 0.7) disorder. Exploratory analyses revealed that frequency of parental fighting, being hit/abused, getting belittled, emotional neglect, physical neglect, insufficient household income, long parental sickness, and overall household experience positively related to DASS-21. In a hierarchical regression analysis with all ACEs and overall household experience, only emotional neglect related to DASS-21 (B = 3.68, t(373) = 2.41, p = .017). Overall household experience did not improve the model (F(12) = 3.51, p < .001; R2change < .001). In hierarchical regression analyses containing ACE sum score and overall household experience, overall household experience was not uniquely related to DASS-21 (t = -0.22, p = .824; R2change < .01). In conclusion, ACEs relate to comorbid disorders in SUD youth. Our exploratory research suggests that ACE frequency might influence this relation, while overall household experience does not further explain this relation. Further research should investigate which ACE measures (a.o., type, frequency) strongly relate to SUDs and psychopathology and examine improved treatment options.Show less
Verbal information transmission has been proposed as one of the most influential fear learning pathways in the acquisition of social fears among children. Empirical studies have demonstrated that...Show moreVerbal information transmission has been proposed as one of the most influential fear learning pathways in the acquisition of social fears among children. Empirical studies have demonstrated that the content of parental verbal information regarding social situations plays a crucial role in shaping children’s development of social fear. Specifically, verbal threat (versus safety) information by the parent regarding novel stimuli significantly influenced children’s reported fear of the social scenario. The current study aims to further investigate whether such verbal threat and safety messages affect children's reported fear in social situations. Additionally, the study explores the potential moderating influence of parental social anxiety on this relationship, as evidence suggests that socially anxious parents convey more negative information regarding novel stimuli, thereby amplifying children's fear beliefs. A total of 69 children (mean age = 11.92 years; 38 girls) received standardized threat and safety information regarding a stranger from their primary caregivers. Subsequently, children engaged in three social tasks with each stranger and reported their fear beliefs about the stranger at the end of the social tasks. Results indicate significantly higher fear beliefs among children who received threat information compared to safety information regarding the stranger. However, parental social anxiety did not moderate the effects of negative verbal information on children’s reported fear beliefs. These findings underscore the role of negative verbal information transmission in children's acquisition of social fears while highlighting the complexity of factors within social anxiety that could contribute to the intergenerational transmission of these fears.Show less
Anxiety disorders are among the most prevalent mental health disorders among children and adolescents, significantly impacting various aspects of their lives. Preventative measures are crucial in...Show moreAnxiety disorders are among the most prevalent mental health disorders among children and adolescents, significantly impacting various aspects of their lives. Preventative measures are crucial in reducing these disorders' incidence and negative outcomes. However, preliminary research on the mechanisms behind anxiety prevention programs is limited. This longitudinal study aimed to investigate a program designed to prevent anxiety development by targeting parents of behaviorally inhibited children, as they are at risk for anxiety. The research question was: What is the moderating effect of the gender of the child and the age of the parent in the mediating relationship of parental anxiety on the effectiveness of the Cool Little Kids (CLK) intervention on child anxiety post-intervention, compared to pre-intervention? A total of 76 parents and their inhibited children aged three to six years were included in this study. The study employed a randomized controlled trial (RCT) design to assign them to either the CLK parenting training or a book with general parenting tips. Child anxiety was measured using a condensed version of the Diagnostic Infant and Preschool Assessment (DIPA) interview administered to the parent, and parental anxiety was assessed using the State-Trate Anxiety Inventory (STAI) questionnaire. A moderated mediation analysis was conducted for separation anxiety, specific phobias, and social anxiety using the PROCESS plug-in for SPSS. The findings indicated that none of the moderated mediation models nor the individual pathways were significant. All hypotheses were rejected. No significant difference in child anxiety was found pre- to post-intervention in both the CLK intervention and active control condition, and parental anxiety does not mediate this relationship. Child gender and parental age did not significantly moderate the link between child and parental anxiety. Despite excelling in among others its preventive system-oriented approach and credibility, this study has several limitations that warrant further research to firmly conclude the role of parental anxiety in CLK’s effectiveness on child anxiety. Recommendations include employing a larger and more diverse sample and experimenting with different scoring methods for the DIPA interview.Show less
Background. Research shows mixed results regarding executive functioning (EF) deficiencies in adolescent Anorexia Nervosa (AN), contrasting with established EF impairments in adult AN patients....Show moreBackground. Research shows mixed results regarding executive functioning (EF) deficiencies in adolescent Anorexia Nervosa (AN), contrasting with established EF impairments in adult AN patients. This study aimed to assess EF and its association with Body Mass Index (BMI) in adolescent girls with first-onset AN. Method. 79 AN patients were compared to 75 matched healthy controls (HC), all females aged 12-22. EF was assessed using the Central Coherence Index (CCI) of the Rey Complex Figure Test (RCFT) and the Behavior Rating Inventory of Executive Functioning (BRIEF). Standardized BMI scores (BMI-SDS) were used to determine the influence of BMI on EF. Measurements were taken at baseline (T1) and one-year follow-up (T2). Results. Total EF scores showed no differences between AN and HC at baseline or follow-up. Compared to HC, AN patients had significantly worse scores on the BRIEF subscales Flexibility (p < .001; p < .001), Emotion Regulation (p < .001; p = .006), and Initiative (p < .001; p = .006), and significantly better scores on Orderliness and Neatness (p = .002; p < .001). P-values represent T1 and T2 respectively. At baseline, AN patients scored significantly higher on the RCFT CCI (p = .009). There was no significant relation between BMI-SDS and EF. Conclusions. Compared to HC, AN patients had normal EF scores with mild weaknesses in set- shifting, emotion regulation, and initiating skills, and strengths in orderliness and neatness. Changes in EF were unaffected by BMI-SDS. This study enhances understanding of EF in adolescent AN patients, which can aid the development of treatment programs.Show less
Empathizing involves the understanding and responding to an individuals’ emotions, while systemizing refers to the understanding and the ability to predict systems. The topics of empathizing and...Show moreEmpathizing involves the understanding and responding to an individuals’ emotions, while systemizing refers to the understanding and the ability to predict systems. The topics of empathizing and systemizing have been studied in children and adults. However, as far as we are aware, no research has investigated these constructs in adolescence, whereas there is a lot of development that takes place during this period. Earlier studies found gender differences in systemizing and empathizing, with males scoring significantly higher on systemizing, while females scored significantly higher on empathizing. This study examined the current gap in research, by examining the relationship between empathizing and systemizing in adolescence and possible gender differences. We did this by estimating network models with partial correlations (Gaussian graphical model) and calculating bridge centrality which identified nodes. These nodes acted as important bridges between one or more communities (e.g., the relationship between understanding of empathizing and motoric systemizing), for both male and female participants. We utilized data from the empathizing and systemizing questionnaire in 6,644 adolescents (2574 males and 4070 females, aged 13-24 years old), which we obtained from the Open-Source Psychometrics Project. We found gender differences in the relationships between empathizing and systemizing nodes in the male and female networks. For instance, in the female network, a correlation was found between the subconstructs feeling of empathizing and natural systems, while in the male network no correlation was found between the two. Moreover, understanding of others’ feelings showed to be highly correlated with all subconstructs of systemizing in all three networks but was not correlated with other subconstructs of empathizing. This study provided a foundation for further exploration of how the constructs of empathizing and systemizing are related and could be used to help guide the design of gender-specific interventions aimed at enhancing both empathizing and systemizing skills in adolescence.Show less
This study investigates the relationship between rejection sensitivity and social feedback learning rate. Rejection sensitivity is an aspect of social anxiety disorder which is especially prevalent...Show moreThis study investigates the relationship between rejection sensitivity and social feedback learning rate. Rejection sensitivity is an aspect of social anxiety disorder which is especially prevalent in adolescents. SAD has a significant relationship with social feedback learning rate and this study aims to go a step further and research whether rejection sensitivity is a leading factor in this relationship. Participants fill in the Liebowitz Social Anxiety Scale as well as the Children’s Rejection Sensitivity Questionnaire. Afterwards they will do a speech task which includes a public speaking section and is judged by confederate judges who will rate them on their performance. The participants rate themselves before and after the feedback from the judges. The difference between individual’s rating before and after the feedback will be measured and this will form the basis of our data for analysis. During the analysis a correlational relationship will be analyzed between rejection sensitivity, its sub measures and social feedback learning rate. The hypothesis of the study is that individuals with higher rejection sensitivity score will have higher negative social feedback learning rates. Results show no significant relationship between the variables.Show less
Social anxiety can have a huge impact on adolescents’ lives, including emotional, social, and educational problems. The relationships between social anxiety, audience perception, and expressiveness...Show moreSocial anxiety can have a huge impact on adolescents’ lives, including emotional, social, and educational problems. The relationships between social anxiety, audience perception, and expressiveness are considered to play a role in the development of those problems, since they cause intense distress or even avoidance of social or performance situations. Effective treatment options are therefore important to prevent further problems. This study examined the relationship between social anxiety, audience perception, and expressiveness, and the feasibility of blended care. To examine this, 43 participants followed a 12 week blended care intervention consisting of psychoeducation, social skills training, cognitive restructuring techniques, exposure tasks, assertiveness training, and homework assignments. In addition, the Social Anxiety Scale for Adolescents, the Audience Perception Questionnaire, and the Speech Performance Observation Scale for Youth were administered before and after treatment. A mediation analysis was done to study whether audience perception mediated the relationship between social anxiety and expressiveness. To test whether blended care was feasible in reducing symptoms of social anxiety, and increase audience perception and expressiveness, multiple paired samples t-tests were performed. No significant relationships were found between social anxiety and audience perception (β = -.054, p = .40), between social anxiety and expressiveness (β = .005, p =.37), and between audience perception and expressiveness (β = -.009, p =.75). Logically, the whole mediation model was also not significant (β = .005, p =.45). Results from the paired samples t-tests showed significant differences for social anxiety (t(29) = 2.66, p = .013), lowering the mean scores from 56.8 to 50.6, and audience perception (t(28) = -4.00, p < .001), increasing the mean scores from -3.2 to -0,8. No significant differences were found for expressiveness (t(13) = .10, p = .92). The results show no relationships between social anxiety, audience perception, and expressiveness, which could be explained by the unfamiliarity of the concept of expressiveness, a different mediator that has influence on these variables, having a small sample size, or participants’ level of education. Further research is needed on both, to gain more insight in relationships affecting social anxiety in adolescents. The results did show the feasibility of blended care in reducing social anxiety and increasing audience perception. Using blended care is encouraged to provide more and better care to adolescents.Show less
