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This chapter explores co-production of spaces for differentiated learning in Street-Lab – a non-profit organization primarily run by volunteering parents and youth making collective activities in collaboration with public employed professionals, local citizens, and other organizations. Street-Lab’s way of co-producing common third activities is an example of a social pedagogical approach in Denmark and an alternative to professional treatment focusing on user’s problems or special target groups. As practice researchers, we participate in multi-positioned ways when exploring processes of co-production of street-sport activities, networks, and dialogical practices in and around Street-Lab. The chapter applies theoretical concepts about boundary communities and differentiated equalities to discuss how inclusive ideologies of being for all are linked to questions of marginalization, (non-)belonging and processes of empowerment. Street-Lab is analyzed as a boundary community that co-produces different boundary spaces for expansive agency and empowerment with different people from the margin.
Atypical sensory reactivity is a core feature of autism but has mostly been studied in small, clinical, cross-sectional samples. We examined whether early sensory atypicalities are transdiagnostic or unique to autism and whether sensory modality and persistence matter. This study is based on the Norwegian Mother, Father, and Child Cohort Study (MoBa), a Norwegian population-based cohort in which race/ethnicity is not recorded. In a subsample (N = 113,785; 51.0% boys, 49.0% girls; child age at the age-8 assessment M = 97.6 months, SD = 2.0; analytic samples n ≈ 31,000–33,000), three parent-reported markers at age 3 (auditory hypersensitivity, reduced pain sensitivity, and unusual sensory interest) predicted seven age-8 outcomes: autism traits, ADHD inattention and hyperactivity, oppositional and conduct problems, anxiety, and depressed mood. In robust regressions and a three-wave persistence analysis, sensory atypicality predicted all domains (standardized β). Autism traits were most strongly predicted (β = 0.18 composite; 0.42 persistent), yet not uniquely (autism–ADHD difference = 0.05 SD). Auditory hypersensitivity was related to internalizing problems, reduced pain sensitivity to externalizing problems, and lower anxiety. Cumulative load showed a graded dose–response. Effects were small, indicating population-level rather than individual predictive value.
Although attention-deficit hyperactivity disorder (ADHD) diagnosis requires a categorical decision, phenotypic, twin and molecular genetic evidence indicates that ADHD traits are continuously distributed, with clinical ADHD at the functionally impairing end of this distribution. This paper proposes conceptualising ADHD as a neurobiological spectrum while treating categorical and dimensional approaches as complementary. A calibration perspective is proposed to describe graded differences in the regulation of attention, arousal, motivation and cognitive control, and their context-dependent expression. Genetic findings support dimensional continuity, whereas neurobiological and cognitive findings are consistent with graded regulatory variation. Functional impairment remains central to translating this dimensional framework into diagnosis and treatment decisions.
Research has consistently suggested an association between ADHD behavior and insecure attachment, yet longitudinal data in middle childhood are largely absent. In particular, the directionality of this association and the role of oppositional defiant disorder (ODD) behavior remain unclear. This longitudinal study therefore examined these links across three annual waves in a Western-European community sample. Data were available for 614 children at Wave 1 (Mage = 10.28, SD = 0.58, range 9–12; 44% boys, 54% girls), 470 at Wave 2 (Mage = 10.28, SD = 0.61, range 10–13; 44% boys, 54% girls), and 385 at Wave 3 (Mage = 12.01, SD = 0.58, range 10–14; 45% boys, 54% girls). ADHD and ODD behavior were rated by mothers using the Child Behavior Checklist; children’s attachment was assessed through both explicit (questionnaires) and implicit (secure base script knowledge) measures. Random Intercept Cross‑Lagged Panel Models revealed stable small to moderate between‑child associations between ADHD behavior and attachment (in)security (β = –0.550 to 0.367), which largely remained significant after controlling for ODD behavior (β = –0.517 to 0.295). Cross‑lagged effects, reflecting prospective within-child processes, were mostly non‑significant, providing little evidence for bidirectional associations in middle childhood.
All-age autism and attention-deficit hyperactivity disorder pathway reform in England is often framed around waiting lists and capacity. However, backlog data alone cannot show how people move through referral, triage, assessment, support and follow-up, or where inequities and unmet need are hidden. Current data also struggle to distinguish confirmed diagnosis, suspected diagnosis, disclosure, self-identification and co-occurring needs. This creates pathway blindness: systems can see pressure, but not flow, fairness or diagnostic visibility. We argue that reform should begin with structured system mapping, agreed definitions and a realistic minimum data-set before dashboards or predictive analytics are used to guide service change.
Presented as a ‘formal metacomic’ (Cook RT, 2017, Metacomics. In Bramlett F, Cook RT and Meskin A (eds), The Routledge Companion to Comics. New York, NY: Routledge, pp. 257–266. https://doi.org/10.4324/9781315851334-32) and understood through Gillian Whitlock’s ‘autographic’ (Whitlock G, 2006, Autographics: The seeing “i” of the comics. Modern Fiction Studies52(4), 966. https://doi.org/10.1353/mfs.2007.0013), this article explores techniques such as abstraction and multiple narrative threads in autobiographical comics, highlighting their storytelling potential from a neurodivergent, ADHD perspective. It aims to advance comic creation as a research and sharing tool for diverse experiences, viewing autographics as a form of critical literacy through which art and activism intersect. The work emphasizes neurodivergent activism through the metaphor of abstraction, which both resists and invites narrative through sequencing. This aligns with the work of J Baetens (2011, Abstraction in comics. SubStance40(1), 94–113. https://doi.org/10.1353/sub.2011.0004), who describes abstraction as anti-narrative. In this concept, a tension exists, since sequencing superimposes narrative onto abstract images, revealing multiple truths. This aligns with neurodivergent experiences, where various ways of perceiving co-exist. The work positions comics as a form of academic resistance and autoethnographic activism.
Attention-deficit/hyperactivity disorder (ADHD) is a chronic neurodevelopmental disorder. Current pharmacological treatments have limitations, highlighting the need for new therapeutic targets. Using two-sample Mendelian randomization with cis-expression quantitative trait loci from the eQTLGen Consortium (31,684 individuals), we performed genomewide analysis against ADHD genomewide association study summary statistics from European ancestry (20,183 cases; 35,191 controls) and FinnGen R10 (2,788 cases; 405,153 controls). Genetic instruments were selected at p < 5 × 10−8 with F-statistic > 10 and linkage disequilibrium clumping (r2 < .001). Mendelian randomization estimates were derived using inverse-variance weighted, weighted-median, and Mendelian randomization-Egger methods, with leave-one-out sensitivity analysis. Colocalization was performed to distinguish causality from linkage disequilibrium. From 5430 genes with valid instruments, we identified 10 ADHD-associated genes (inverse-variance weighted p < .01, consistent direction across methods): four risk-increasing genes (RRAGD, DTX2, HMOX1, AGAP3) and six protective genes (NUCKS1, CPSF1, MAU2, CLDN5, CYP4F12, ATP6V1E2). MAU2 demonstrated strong colocalization support (posterior probability for hypothesis 4 > .6). Pathway enrichment highlighted mechanistic target of rapamycin signaling as a priority mechanism. Computational in silico drug prioritization nominated candidate compounds (e.g., selenium, ketoconazole) predicted to modulate these targets. This study identifies genetically supported therapeutic targets for ADHD. MAU2 emerged as the most promising causal locus. Rapamycin signaling represents a key mechanistic pathway. Several repositioned candidates (e.g., selenium, ketoconazole) warrant further experimental evaluation as potential leads. These findings provide a hypothesis-generating foundation for drug target prioritization, and require functional confirmation in CNS models and clinical validation before therapeutic relevance can be established.
Previous research on attention-deficit hyperactivity disorder (ADHD) research has overlooked high-functioning workers managed in occupational health settings.
Aims
To investigate clinical characteristics, service use, and sex-related differences in medication and work disability among employees with ADHD.
Method
This study was a cross-sectional descriptive analysis of psychiatric comorbidities in 2117 patients (53.8% men, 46.2% women) with a clinical diagnosis of ADHD (ICD-10 F90.0) in the Finnish occupational health system (2018–2022). We explored service use, medication and sickness absence periods (using multinomial regression models) in a subset with available data (n = 1447).
Results
Psychiatric comorbidity affected 80.5% of patients, most commonly involving anxiety disorders (51.8%) and depression (43.9%). Service use was high: 87.0% consulted a psychiatrist and 70.1% a psychologist. Medication profiles differed by sex (Cramer’s V = 0.15): men more frequently received psychostimulants only (27.4% v. 18.4%), whereas women were more likely to receive antidepressants only or antidepressant–anxiolytic combinations. Women demonstrated substantially higher levels of psychiatric sickness absence compared with men across all duration categories, with relative risk ratio (RRR) = 2.08 (95% CI 1.37–3.14) for short (1 to 7 days) absences, RRR = 2.03 (95% CI 1.42–2.90) for intermediate (8 to 30 days) absences and RRR = 2.75 (95% CI 2.16–3.52) for long-term (>30 days) absences.
Conclusions
Working adults with ADHD carry a heavy comorbidity burden and use specialised services extensively. Women are more frequently managed with comorbidity-focused medications rather than stimulants only and experience disproportionately higher psychiatric-related work disability. Sex-specific clinical pathways may be needed to preserve workability in this population.
ADHD has been associated with BMI, across the lifespan. A possible mechanism linking ADHD and BMI is binge eating symptoms. Previous research has found associations between ADHD, binge eating symptoms, and BMI. However, the role of genetic and environmental influences on these associations remains unclear.
Method
We utilized data from the Twins Early Development Study, comprising 4,363 monozygotic and 8,575 dizygotic twin pairs. ADHD symptoms in childhood and adolescence were assessed using parent-reported questionnaires. Adult ADHD symptoms were measured using both self-report and parent-report questionnaires. Phenotypic mediation models examined whether binge eating symptoms mediated the association between ADHD and BMI, without controlling for genetic confounding. Subsequently, the etiological architecture underlying the associations among the three traits across childhood, adolescence, and adulthood were investigated by incorporating genetic and environmental influences into the models.
Results
Binge eating symptoms significantly mediated the association between ADHD symptoms and BMI in both adolescence and adulthood. However, these mediation effects were no longer present once genetic and environmental influences were incorporated into the models. The best-fitting model in childhood, adolescence, and adulthood was Cholesky decomposition models, where covariance between traits was explained by shared etiology.
Conclusions
This twin study reveals shared liability across ADHD, binge eating symptoms, and BMI. The mediating role of binge eating symptoms in the relationship between ADHD symptoms and BMI was largely confounded by shared genetic influences. Intervention strategies could focus more on common underlying behavioral and self-regulatory mechanisms across these traits, as well as placing more emphasis on symptom patterns within families.
Attention-deficit/hyperactivity disorder (ADHD) and substance use disorders (SUDs) commonly co-occur and have overlapping genetic liabilities. Less is known regarding the phenomenology and genetics of ADHD in a cohort enriched for SUDs and the extent to which ADHD genetic liability contributes to SUD risk when controlling for substance specific genetic risk.
Methods
We used data from the Yale-Penn cohort, which comprises ~14,000 individuals ascertained for SUDs and/or as controls. Psychiatric and substance use phenotypes were ascertained from the semi-structured assessment for drug dependence and alcohol survey for all participants. Polygenic scores (PGSs) were developed for ADHD and multiple substance-related traits using summary statistics from large genome-wide association studies on participants with genetic data (N = 10,275).
Results
Participants who met DSM-IV Criteria for ADHD had significantly increased odds for every DSM-5 SUD analyzed, greater polysubstance use, and younger age of onset of substance use. Among participants of European-like ancestry, ADHD PGS was associated with multiple SUDs, even after controlling for substance-specific PGS. Of the substance-related PGS, only the smoking initiation PGS was associated with ADHD diagnosis and criterion count and only among individuals of European-like ancestry.
Conclusions
In this sample, ADHD was associated with increased risk for SUDs and earlier onset of substance use. Additionally, genetic liability to ADHD was independently associated with multiple SUDs and SUD criteria counts. PGS for substance-related traits tended to be less significantly associated with ADHD. Further studies in large, diverse populations are needed to enhance our understanding of these associations.
Cognitive behaviour therapy (CBT) requires baseline skills and knowledge that people possess to varying degrees. This includes the ability to accurately identify thoughts, feelings, and behaviours; interactions between these; and an understanding that change in one area may bring about change in another. Assessing these skills could help clinicians discern whether adaptations to CBT are required early in treatment. We report two studies about the development and validation of a novel measure, the CBT Skills Task (CBT-SKI). Study 1 investigates the internal consistency and convergent validity of a four-vignette paper-and-pencil version of the task with 72 neurotypical adolescents. Study 2 examines the factor structure of a two-vignette online version of the CBT-SKI with 300 young adults aged 18–30 from neurotypical and neurodivergent populations. Across studies, the task demonstrated adequate internal consistency. Relevant task items converged well with a validated self-report measure analysing one’s own emotions. Exploratory factor analyses indicated a three-factor structure for the CBT-SKI, which was supported by confirmatory factor analysis. However, the third factor had below-threshold internal consistency, indicating potential issues with its composition and that further refinement may be required. The CBT-SKI shows promise as a psychometrically sound measure of baseline CBT skills and clinical applications are discussed.
Key learning aims
(1) To understand the need for a standardised task-based measure of baseline CBT skills.
(2) To provide information about the development of the CBT Skills Task.
(3) To provide information about validation of the CBT Skills Task.
In recent years, adult diagnoses of attention-deficit hyperactivity disorder have risen sharply. Existing diagnostic frameworks appear unable to distinguish neurodevelopmental from environmentally mediated attentional deficit. Psychiatry requires a renewed clinical framework to recognise the impact of the modern information environment on human cognition. The advertising industry has already achieved this with precision.
Recent initiatives by the American Psychiatric Association to revise the DSM reflect renewed efforts to address enduring challenges in psychiatric nosology (e.g. absence of clear biological markers, substantial heterogeneity within disorders and high comorbidity across disorders). This article examines five key classification challenges emerging from successive diagnostic revisions in one of the most common childhood diagnoses: attention-deficit hyperactivity disorder (ADHD). Importantly, this theoretical analysis is anchored in prior empirical findings from a systematic textual analysis of all DSM descriptions related to ADHD, from DSM-III (1980) to DSM-5-TR (2022). Drawing on foundational principles from the philosophy of science, the analysis examines how diagnostic adjustments introduced in response to empirical findings or clinical concerns may carry broader implications for the structure, boundaries and conceptual coherence of psychiatric diagnosis. These include: (a) prevalence and the threshold of deviance; (b) gender and diagnostic heterogeneity; (c) aetiological framing and explanatory coherence; (d) medical framing and diagnostic boundaries; and (e) comorbidity and discriminant validity. Addressing these challenges, as well as the broader epistemic foundations of psychiatric diagnosis discussed in this article, may benefit clinicians facing complex diagnostic decisions in everyday practice and theorists developing future psychiatric classification systems.
As the large cohort of international adoptees – those placed in new families during the peak of global adoptions at the turn of the twenty-first century – enters adulthood, research on their mental health outcomes has grown substantially. This chapter synthesizes this literature and explores how lifespan trajectories relate to earlier developmental experiences. It considers the interplay of early adversity, cultural transitions, and family dynamics in shaping long-term psychological well-being. Particular attention is given to factors that foster resilience and identity integration, as well as persistent challenges that may emerge across adulthood.
This essay develops a disability-based epistemic challenge to nature-first constitutivism, a family of views on which standards of excellence and defect for (human) agents are grounded in the nature of (human) agency. The core idea of the challenge is that various culturally prevalent negative assumptions about disability, along with related phenomena such as disability invisibility, introduce ideological distortions into our assessment of what (human) capacities for agency and the associated excellences and “defects” are like, occluding from view the worthwhile hypothesis that some disabled modes of agency might be compatible with agential excellence. Such distortions may be avoidable, but only by seriously interrogating the assumptions about disability that underpin them, as well as specific disabled modes of agency. I develop this challenge in detail by focusing on one disability affecting agency: ADHD. I conclude by outlining related metaphysical questions regarding plural forms of agency, situating these questions within the emerging literature on pluralist constitutivism.
Attention-deficit hyperactivity disorder (ADHD) is associated with impairments in real-life decisions, many involving balancing costs and benefits. Increasing dopamine and norepinephrine with stimulant medication improves decision-making in ADHD. However, it is unclear whether stimulant medication affects sensitivity to costs and/or benefits or alters the speed-accuracy tradeoff. Here, we applied the drift diffusion model (DDM) to assess how the stimulant medication methylphenidate (MPH) affects subprocesses of cost-benefit decision-making in ADHD.
Methods
Sixty-one adult participants with ADHD and 63 healthy controls completed a cost-benefit decision-making task in a randomized double-blind placebo-controlled design. ADHD participants were tested once on and once off MPH. Control participants performed the task in two sessions without medication. The task entailed deciding whether to accept or reject a stimulus based on learned cost and benefit value associations. The effect of ADHD and medication on subprocesses of decision-making was disentangled by estimating task performance with DDM parameters drift rate, starting point bias, and decision threshold, representing evidence accumulation, a priori accept/reject bias, and the speed-accuracy tradeoff, respectively. Primary analyses used a modified intention-to-treat sample, including participants with main-phase data from both sessions.
Results
The DDM analysis identified impaired evidence accumulation combined with premature responding in participants with ADHD, indicated by reduced sensitivity to costs and benefits and narrower decision thresholds. MPH altered the cost-benefit balance by improving sensitivity to costs. Lastly, lower cost sensitivity was associated with greater symptom severity and higher prescribed dosage in ADHD.
Conclusions
Methylphenidate alters cost-benefit decision-making in ADHD by increasing sensitivity to costs.
We investigated longitudinal associations between adolescent attention-deficit/hyperactivity disorder (ADHD) symptoms and later antisocial behavior and tested 1) whether these associations are independent of familial factors shared by co-twins and 2) whether cognitive performance moderates the associations. In a population-based sample of Finnish twins (N = 602–1330, 53% female), we assessed ADHD symptoms with teacher assessments and a diagnostic interview in adolescence, symptoms of antisocial personality disorder with a diagnostic interview in young adulthood, and criminal behavior across the lifespan with self-reports in early midlife. Cognitive performance was assessed with commonly used test measures in young adulthood. Adolescent ADHD symptoms were consistently associated with an increased risk for antisocial symptoms (incidence rate ratio [IRR] = 1.18–1.27) and criminal behavior (IRR = 1.16–1.20) later in life. Within-pair and interaction analyses suggested that the associations were to a large degree independent of familial factors, and cognitive performance level did not moderate them. In conclusion, subclinical ADHD symptoms are associated with an increased risk for antisocial behavior at the population level. The association is not fully explained by familial background, and it is independent of cognitive performance level.
Alanine, commonly found in meaty foods and popular as a sports supplement, has interactions with neurotransmitters and brain energy supply, but its impact on mental health remains uncertain. This two-sample Mendelian randomisation (MR) study aimed to investigate causal associations of plasma alanine with major mental disorders-depression, bipolar disorder, schizophrenia, anxiety, and attention-deficit hyperactivity disorder (ADHD) and to further explore sex-specific associations using available data, considering potential sex disparity. We utilised genetic variants from the UK Biobank to predict plasma alanine (N = 115,074) and obtained their genetic associations with depression (Ncases = 194,180 and Ncontrols = 521,663), bipolar disorder (Ncases = 46,418 and Ncontrols = 563,769), schizophrenia (Ncases = 52,017 and Ncontrols = 75,889), anxiety (Ncases = 19,529 and Ncontrols = 212,855), and ADHD (Ncases = 46,418 and Ncontrols = 402,606) from genome-wide association studies (GWASs) in the Psychiatric Genomics Consortium (PGC) and FinnGen Biobank. MR estimates were primarily derived using the inverse variance weighted (IVW) method, with weighted median, MR-Egger, and MR-RAPS applied as sensitivity analyses. MR-PRESSO was used to detect pleiotropy and outliers. Genetically predicted alanine was nominally associated with a lower risk of schizophrenia overall (OR 0.88, 95% CI: 0.79–0.99) and in males (OR 0.88, 95% CI: 0.77–0.99), which were not significant after multiple testing. No association was detected in females (OR 0.92, 95% CI: 0.80–1.05). There was no evidence linking plasma alanine to depression, bipolar disorder, anxiety, or ADHD. These findings suggest that alanine might have an inverse association with schizophrenia, which may be more evident in males, but has no psychiatric side effects on other mental disorders. Replication in larger studies is warranted.
Emerging evidence suggests that attention-deficit hyperactivity disorder (ADHD) may be associated with increased likelihood of experiencing interpersonal harm, including from intimate partners.
Aims
This study aims to test the long-term associations between ADHD traits in childhood and experiences of intimate partner violence (IPV) up to midlife (age 51 years).
Method
Data were from the 1970 British Cohort Study, a nationally representative longitudinal study of people born during 1970. ADHD traits were assessed at age 10 years. Lifetime experience of five types of IPV was measured at age 51 years (harassment, economic abuse, physical violence, threats/coercive control, sexual violence). Regression models were used to test associations between childhood ADHD traits and midlife IPV, adjusting for gender, ethnicity and childhood social class.
Results
Adjusted models showed that ADHD traits in childhood were associated with higher risk of experiencing any form of IPV, a greater number of different IPV experiences and all individual subtypes of IPV by age 51 years. Post-estimation showed that around one in seven men and one in four women without high ADHD traits experience some form of IPV by midlife. In people with high ADHD traits (4.40%), these estimates increase to approximately one in five men and one in three women.
Conclusions
Higher levels of childhood ADHD traits are associated with an increased risk of experiencing IPV by middle age. These findings highlight that ADHD may be associated with increased vulnerability to interpersonal harm in relationships. Identifying people with ADHD at greatest risk, as well as addressing the needs of people with ADHD within IPV prevention and response systems is important for reducing harm and addressing inequalities faced by people with ADHD over the life course.