Participatory research in child psychology & psychiatry: Embracing untidiness to break new ground.

We are pleased to present our Special Issue on Participatory Research. In this editorial, we outline how the disability rights movement has been instrumental to the development of participatory approaches, before giving consideration to some of the debates and criticisms associated with participatory research in practice. We summarise the contributions offered by the studies within this issue and propose four areas of consideration, drawn from the body of included research, to inform future developments.

Shining a spotlight on youth involvement in mental health research: Challenges and innovations.

Despite progress in youth involvement in mental health research, considerable gaps remain in our understanding, conceptualisation, and implementation of involving children and young people in this field. This Editorial Perspective reflects on how these gaps present challenges to our research practices and often serve as barriers to meaningfully involving youth voices and experiences into the research process. We take a critical perspective to recent advances in the field of youth involvement in mental health research, reflected by the studies included in this special issue, and highlight examples of good practice paving the way for more equitable and inclusive approaches.

Defining key concepts for mental state attribution.

The terminology used in discussions on mental state attribution is extensive and lacks consistency. In the current paper, experts from various disciplines collaborate to introduce a shared set of concepts and make recommendations regarding future use.

A transdiagnostic approach to neurodiversity in a representative population sample: The N+ 4 model.

Background: The concept of neurodiversity draws upon scientific research, and lessons from practice and lived experience to suggest new ways of thinking about neurodevelopmental conditions. Among the formative observations are that characteristics associated with neurodevelopmental conditions are part of a "broader phenotype" of variation across the whole population, and that there appear to be "transdiagnostic" similarities as well as differences in these characteristics. These observations raise important questions that have implications for understanding diversity in neurodevelopmental conditions and in neurocognitive phenotypes across the whole population.

The relationship between dissociation and panic symptoms in adolescence and the exploration of potential mediators.

Background: Dissociative experiences have been linked to panic symptoms in adolescents, yet the nature of the association remains unclear.

Methods: In the present study, we investigated the longitudinal relationship between dissociative experiences (focusing on the felt sense of anomaly subtype) and panic, as well as the potential mediating roles of emotion regulation strategies (expressive suppression and cognitive reappraisal), alexithymia, and cognitive appraisals of dissociation. Four thousand five hundred one adolescents aged 13-18 years were recruited via social media advertising to take part in an online survey at two timepoints, 1 month apart.

Compassion Focused Group Psychotherapy for attachment and relational trauma: Engaging people with a diagnosis of personality disorder.

Objectives: The research aimed to evaluate an exploratory Compassion Focused Group Psychotherapy Programme and the impact on participants' experiences of self-criticism, usage of services and general wellbeing. Participants included patients with a history of complex attachment and relational trauma (A&RT), who might attract a diagnosis of personality disorder.

Design: This study utilised a quasi-experimental non-randomised within subject controlled design for the evaluation of the efficacy of the programme.

Reduced gamma oscillation during visual processing of the mother's face in children with autism spectrum disorder: A pilot study.

Aim: This study aimed to investigate gamma oscillations related to face processing of children with autism spectrum disorders and typically developed children using magnetoencephalography.

Methods: We developed stimuli that included naturalistic real-time eye-gaze situations between participants and their mothers. Eighteen young children with autism spectrum disorders (62-97 months) and 24 typically developed children (61-79 months) were included.

Skin properties and afferent density in the deterioration of tactile spatial acuity with age.

Tactile sensitivity is affected by age, as shown by the deterioration of spatial acuity assessed with the two-point discrimination task. This is assumed to be partly a result of age-related changes of the peripheral somatosensory system. In particular, in the elderly, the density of mechanoreceptive afferents decreases with age and the skin tends to become drier, less elastic and less stiff.

Altered sensory integration from body and language development in children with autism spectrum disorder.

Aim: Although atypical sensory motor processing has been investigated in children with autism spectrum disorder (ASD), whether or not atypical sensory motor processing is related to altered language function in children with ASD remains unclear.

Methods: This study examined the relationship between sensory motor processing and language conceptual inference ability in 3-10-year-old children with ( = 61) and without ( = 114) ASD. Language performance was assessed using the language conceptual inference task of the Kaufman Assessment Battery for Children (K-ABC).

Oxytocin modulates neurocomputational mechanisms underlying prosocial reinforcement learning.

Humans often act in the best interests of others. However, how we learn which actions result in good outcomes for other people and the neurochemical systems that support this 'prosocial learning' remain poorly understood. Using computational models of reinforcement learning, functional magnetic resonance imaging and dynamic causal modelling, we examined how different doses of intranasal oxytocin, a neuropeptide linked to social cognition, impact how people learn to benefit others (prosocial learning) and whether this influence could be dissociated from how we learn to benefit ourselves (self-oriented learning).

An experimental examination of the effects of alcohol consumption and exposure to misleading postevent information on remembering a hypothetical rape scenario.

We experimentally examined the effects of alcohol consumption and exposure to misleading postevent information on memory for a hypothetical interactive rape scenario. We used a 2 beverage (alcohol vs. tonic water) × 2 expectancy (told alcohol vs.

Thalamic functional connectivity and its association with behavioral performance in older age.

Introduction: Despite the thalamus' dense connectivity with both cortical and subcortical structures, few studies have specifically investigated how thalamic connectivity changes with age and how such changes are associated with behavior. This study investigated the effect of age on thalamo-cortical and thalamo-hippocampal functional connectivity (FC) and the association between thalamic FC and visual-spatial memory and reaction time (RT) performance in older adults.

Methods: Resting-state functional magnetic resonance images were obtained from younger ( = 20) and older ( = 20) adults.

Blindfolding during wakefulness causes decrease in sleep slow wave activity.

Slow wave activity (SWA, 0.5-4 Hz) represents the predominant EEG oscillatory activity during slow wave sleep (SWS). Its amplitude is considered in part a reflection of synaptic potentiation in cortical networks due to encoding of information during prior waking, with higher amplitude indicating stronger potentiation.

Implementing integrated treatment for co-existing substance use and severe mental health problems in assertive outreach teams: training issues.

This study sought to evaluate systematically training and implementation of a specific integrated treatment approach for co-occurring problem substance use and mental health within existing assertive outreach (AO) teams. The AO team was treated as a whole unit rather than as individual clinicians. They were provided with training and supervision to deliver a cognitive--behavioural integrated treatment approach.

Poststroke anxiety and its relationship to coping and stage of recovery.

Anxiety disorders are reported to be common but poorly understood poststroke phenomena. The relationships between symptoms of anxiety, coping activity, and stage of recovery were investigated in 44 subjects who had suffered strokes (mean age 68.6 years).