Feasibility, Experiences and Short-Term Outcomes on Challenging Behaviour and Well-Being of a Partially Online Music Intervention Pilot Study for Adults With Intellectual Disabilities.

BACKGROUND: During the COVID-19 pandemic we implemented a partially online music intervention to examine the feasibility, experiences and short-term outcomes on the challenging behaviour and well-being of adults with intellectual disabilities. METHOD: This mixed-methods study included 10 participants with mild or moderate intellectual disabilities who received 16 one-hour individual music sessions in 10 weeks, either face-to-face or online. Data on feasibility and experiences from participants and music workers were collected and analysed using inductive thematic analysis. Challenging behaviour and well-being were measured before and after intervention. RESULTS: Overall experiences were positive and concerned appreciation, positive feelings, musical abilities, attention span, relatedness and personalisation. Online experiences varied, but most participants preferred face-to-face over online sessions. After the intervention, challenging behaviour scores were better than before. CONCLUSIONS: Engaging in a partially online music intervention is feasible for people with intellectual disabilities and seems to improve challenging behaviour. Experiences are discussed and recommendations for future online sessions are provided.

Preventing risk of placement breakdown and hospital admission in the management of distressed behaviour in dementia care: A qualitative case study with family and care-home staff.

Objectives: Behaviours such as hitting-out and declining personal care are commonly exhibited by people living with dementia and are associated with care-giver stress and anxiety and care home placement breakdowns. Traditionally, pharmacological approaches have been used to manage behaviour; however, research indicates limited effectiveness. National guidelines recommend use of non-pharmacological interventions as first line treatment for distress, but further research is required to elucidate the components that lead to improved care for people living with dementia. This study aims to explore what works, examining case studies in which a non-pharmacological clinical intervention, the Newcastle Model, was used to understand and manage distressed behaviour in dementia care within care home settings. Method: A qualitative case study design was used. Three cases were selected from the Edinburgh Behaviour Support Service for their success in preventing care home placement breakdown during a distressed behaviour intervention in NHS Scotland. Family members and staff involved in the interventions within these cases were interviewed (N = 6). Thematic analysis was used to analyse data. Findings: All participants reported positive outcomes from the intervention. Three key themes were identified, each with subthemes. Participants described a supportive, non-judgmental environment which allowed them to integrate knowledge about dementia and tailor interventions to the specific needs of the individual living with dementia. There was also a sense of family and staff coming together to unite with shared goals. A preliminary model of all of themes and their interactions is presented. Conclusion: The study supports use of biopsychosocial, formulation-led approaches in the understanding and treatment of complex behavioural presentations in community care settings. It suggests that clinicians should endeavour to facilitate safe and open environments for care home staff and family members, in order to promote attribution change and person-centered care, and to help mediate differences and conflict between staff and family members.

ProVIA-Kids - outcomes of an uncontrolled study on smartphone-based behaviour analysis for challenging behaviour in children with intellectual and developmental disabilities or autism spectrum disorder.

Introduction: Challenging behaviour (CB) is a common issue among children with autism spectrum disorder or intellectual and developmental disability. Mental health applications are low-threshold cost-effective tools to address the lack of resources for caregivers. This pre-post study evaluated the feasibility and preliminary effectiveness of the smartphone app ProVIA-Kids using algorithm-based behaviour analysis to identify causes of CB and provide individualized practical guidance to manage and prevent CB. Methods: A total of 18 caregivers (M = 38.9 ± 5.0) of children with a diagnosis of autism spectrum disorder (44%), intellectual and developmental disabilities (33%) or both (22%) aged 4-11 years (M = 7.6 ± 1.8) were included. Assessments were performed before and after an 8-week intervention period. The primary outcome was the change in parental stress. Caregiver stress experience due to CB was also rated daily via ecological momentary assessments within the app. Secondary outcomes included the intensity of the child's CB, dysfunctional parenting, feelings of parental competency as well as caregivers' mood (rated daily in the app) and feedback on the app collected via the Mobile Application Rating Scale. Results: We observed increases in parental stress in terms of conscious feelings of incompetence. However, we also saw improvements in parental stress experience due to CB and overreactive parenting, and descriptive improvements in CB intensity and caregiver mood. Discussion: ProVIA-Kids pioneers behaviour analysis in a digital and automated format, with participants reporting high acceptance. Pilot results highlight the potential of the ProVIA-Kids app to positively influence child behaviour and caregiver mental health over a longer intervention period. Registration: The study was registered at https://www.drks.de (ID = DRKS00029039) on May 31, 2022.

Nurses' experiences on the use of Positive Behaviour Support in the management of challenging behaviour in adults with a dual diagnosis of a mental health disorder and an intellectual disability.

INTRODUCTION: Individuals who have a dual diagnosis of both a psychiatric disorder and an intellectual disability (ID) are more likely to exhibit challenging behaviour than the general population. Clinicians globally have been encouraged to use positive approaches such as Positive Behaviour Support (PBS) when managing challenging behaviour. AIM: To explore nurses' views, opinions and perceptions on the use of positive behaviour support, as an adjunctive therapy, in the management of challenging behaviour in adults with a dual diagnosis of a mental health disorder and an intellectual disability within a mental health setting. METHOD: A descriptive qualitative study was undertaken to identify registered nurses' experiences of using PBS in managing challenging behaviour. Data were collected from ten participants via semi-structured interviews and analysed using thematic analysis. RESULTS: Two themes were constructed; 1) Being involved from the beginning and 2) Impact on adults with a dual diagnosis. DISCUSSION: Nurses' involvement from the onset was fundamental in maximising the potential of PBS. Benefits of PBS were identified. Having a meaningful relationship with clients and a good knowledge of their behaviours was integral to the success of PBS. IMPLICATIONS FOR PRACTICE: Participants emphasised the importance of continuous education around PBS. Nurses should be included in the formulation of PBS plans. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: RELEVANCE STATEMENT.

Positive behaviour supports in disability and community services (PBS-DCS): a tiered model for foundational, targeted, and specialist supports.

PURPOSE: Positive behaviour support (PBS) is recommended as a service response to challenging behaviours. In Australia, however, there has been concern regarding PBS policy and implementation. In response, this article proposes a tiered PBS service model for disability and community settings, which is evidence-based and rights-driven. MATERIALS AND METHODS: Relevant literature, policy guidelines, and clinical experience are used to inform a positive behaviour support service model for community implementation. RESULTS: The Positive Behaviour Support in Disability and Community Service (PBS-DCS) model articulates systems-wide practices that support effective PBS provision within a human rights approach. The model describes three tiers of behaviour support: Tier I (Foundational), Tier II (Targeted), and Tier III (Specialist), and considers who should deliver which intervention elements and when. CONCLUSIONS: The PBS-DCS model provides a framework to support quality PBS practice in community settings. It is proposed that a proof-of-concept model of community-based PBS should be investigated-and that this would help to ensure current practice aligns with the professional expectations of PBS and deliver high quality services to people living with disability.

A tiered behaviour support model of behaviour support is suggested to promote human rights of people living with disability and decrease costs associated with managing challenging behaviours by investing in good foundational practices.The positive behaviour supports in disability and community services model is proposed to provide clarity and accountability within and across service teams.The model could be used as the basis for a proof-of-concept model for auditing and quality appraisal, which is critical in developing more effective and/or efficient practices.

A systematic review and meta-analysis of the effectiveness of interventions targeting the parent-child relationship in families of children with an intellectual disability.

BACKGROUND: The review aimed to investigate the effectiveness of parent-child relationship interventions for families of children with intellectual disability up to 12 years old. METHODS: Quasi-experimental or randomised controlled trials (RCTs) of interventions targeting the parent-child relationship where ≥50% of children had an intellectual disability were included. Meta-analyses of parent-child relationship outcomes and child outcomes used standardised mean difference as the effect size. RESULTS: Twenty-seven papers were included (N = 1325). Parent-child relationship outcomes improved significantly (n = 1325; g = 1.08, 95% CI: 0.64, 1.52) with a large effect size that was robust to sensitivity analyses. Child developmental outcomes improved significantly (n = 1082; g = 0.65, 95% CI: 0.23, 1.07), and indicated a large effect size for child socialisation and communication. CONCLUSIONS: Findings suggest that interventions targeting parent-child relationship quality are associated with substantial improvements in parent-child relationship and may improve child outcomes related to socialisation and communication.

Item-validity analysis of the SED-S in a multicentre study of adults with intellectual disabilities.

BACKGROUND: Valid and reliable instruments for measuring emotional development are critical for a proper diagnostic assignment in individuals with intellectual disabilities. This exploratory study examined the psychometric properties of the items on the Scale of Emotional Development-Short (SED-S). METHOD: The sample included 612 adults with intellectual disabilities (Mage = 37.35, SDage = 13.27; 59.8% males). Item validity analysis comprising sensitivity and specificity rates and discriminatory power were determined. RESULTS: The relative mean frequency of 'yes' answers to all 200 items was 29.5%. The mean sensitivity rate was 67.5% and the mean specificity rate was 79.3%. Most items (85.0%) showed good discriminatory power with the adjacent stage(s), especially between SED-1, SED-2, SED-3 and SED-4. Particularly in SED-4 some items showed weaknesses in the differentiation between these stages. DISCUSSION: This study adds to previous validation studies by showing that most SED-S items have psychometrically sound properties.

Challenging behaviour, the application of restrictive measures and psychotropic drug prescription in people with intellectual disabilities.

BACKGROUND: Prescribing of psychotropic drugs (PDs) and applying restrictive measures are both frequently used in managing challenging behaviour of people with intellectual disabilities (ID), which is not always according to guidelines or good clinical practice. AIMS: This study aimed to investigate the potential triangular relationship between challenging behaviour, the application of restrictive measures and PD prescription. METHODS AND PROCEDURES: In this cross-sectional study, data on challenging behaviour, PD prescription and restrictive measures were collected. We defined and compared four mutually exclusive groups of participants. OUTCOMES AND RESULTS: Challenging behaviour in the group in whom one or more PD were prescribed as a restrictive measures (PDRM) was more severe than in the other three groups. More severe challenging behaviour, a higher number of antipsychotics, antidepressants and anxiolytics/hypnotics prescriptions, a lower dosage, and more application of domotics as restrictive measure was shown in the PDRM compared to the group in whom PDs were prescribed according to guidelines (PDNRM). CONCLUSIONS AND IMPLICATIONS: We did not find indications for a triangular relationship of challenging behaviour, the application of restrictive measures and PD prescriptions. Future longitudinal research is needed to better understand this complex relationship and should investigate the indication and the effect of treatment. WHAT THIS PAPER ADDS?: This study is a first exploration of the potential triangular relationship between symptoms of challenging behaviour, psychotropic drug (PD) prescription, and the application of restrictive measures. Prescribing PDs and applying restrictive measures are two interventions which are commonly used to manage challenging behaviour in people with intellectual disabilities. Both have been subject of research separately in recent years. However, it is conceivable that the PD prescription in treatments for challenging behaviour could be a substitute for another form of a restrictive measure, for example a physical or mechanical restraint. For this purpose, we defined and compared four mutually exclusive groups of participants. We found no indication for this triangular relationship. On the other hand, we found the highest severity of challenging behaviour in the group who used PDs as restrictive measure next to other restrictive measures. Our results may suggest that both prescribing PDs and applying non-pharmacological restrictive measures are used simultaneously in managing challenging behaviour, are not sufficiently implemented or effective.

Process evaluation of a parenting intervention for pre-schoolers with intellectual disabilities who display behaviours that challenge in the UK.

BACKGROUND: Stepping Stones Triple P (SSTP) is a complex parent-mediated intervention aimed to reduce behaviours that challenge in children with moderate to severe intellectual disabilities, aged 30-59 months. METHODS: To formulate a comprehensive understanding of SSTP implementation in the UK, we conducted a process evaluation collecting stakeholder views and considering intervention fidelity, dose, reach, delivery adaptations, and acceptability. RESULTS: Fidelity and quality of delivery ratings were high. Parents perceived SSTP as valuable, reporting increased parental confidence and understanding of the child's behaviours. However, only 30% of families received an adequate dose of the intervention. Parents who only received treatment as usual described feeling abandoned by current services. Service managers emphasised the importance of availability of resources and therapist training for successful intervention delivery. CONCLUSIONS: SSTP supports effective management of early-onset behaviours that challenge. Further work is needed to ensure equitable access to the intervention across health and social care services. TRIAL REGISTRATION: NCT03086876 - https://www. CLINICALTRIALS: gov/ct2/show/NCT03086876?term=Hassiotis+Angela&draw=1&rank=1.

The predictive validity and temporal characteristics of the HCR-20v3 for inpatient violence in forensic inpatient settings. An international study.

Aggression and violence are common day to day problems in psychiatric settings. However, the optimal means of assessing that risk remains unclear. In the context of that uncertainty many tools have evolved, among which the HCR-20 is one of the most globally accepted, though many questions remain about its performance, how and when it should be deployed and how it can be most effectively used. In this 12 month follow up study of 210 forensic psychiatric inpatients with a diagnosis of a schizophrenia spectrum disorder we explored these issues. We found that the performance of the HCR-20v3, especially its Total score, performed well up to 6 months after it was rated but its performance deteriorated after that. Repeating the HCR-20v3 at 6 months stabilised the risk assessment and led to improved performance in the second months over and above the first rating. The HCR-20v3 was good at identifying those subjects at low risk of violence over 6 months of follow up in a forensic inpatient setting. The real-world implications of this study are that the HCR-20v3 is an effective means of identifying patient at low risk of violence, but it should be reassessed every 6 months.

Evaluating the effectiveness of the Complex Behaviour Forum-A multisystem approach to supporting people with complex challenging behaviour.

BACKGROUND: This study assessed the effectiveness of a cross-departmental case review panel-the Multicap Complex Behaviour Forum (CBF)-in reducing challenging behaviour exhibited by people with intellectual disabilities. METHODS: Thirty participants (15 CBF participants and 15 matched-control participants) took part in the study. Behavioural data was collected for each CBF participant (and their matched control) for the three-month period before entering the CBF, during their time in the CBF, and the 3 months after exiting the CBF. RESULTS: There was a significant interaction of group and time observed, with the CBF participants showing more change in behavioural incidents across time. Associated with this change was a noticeable reduction in staff injury costs related to the challenging behaviour of the CBF participants. CONCLUSIONS: This study demonstrates that positive behavioural and organisational outcomes are enhanced by fostering collaboration across multiple organisational systems when it comes to supporting people who exhibit challenging behaviours.

Factors affecting the feelings of safety among individuals with mild intellectual disabilities and severe challenging behaviour in residential care: A qualitative study of professional and service users' perspectives.

Background: This study focuses on what feeling safe means for people with mild intellectual disabilities and severe challenging behaviour, and which factors affect their sense of safety. Method: Thematic analysis was used to analyse data collected during (1) ethnographic longitudinal research and (2) interviews and focus groups among professionals and service users. Results: Feelings of safety can relate to three main themes: (1) a physical environment that reduces risks and temptations; (2) a reliable, predictable, and supportive environment; and (3) an accepting environment that enables service users to establish a normal life. An analysis of which factors affect service users' sense of safety identified 20 themes (e.g. team climate) and 34 subthemes (e.g. interactions with other service users). Conclusions: A range of interconnected factors can affect service users' feelings of safety. Future research should explore what organisations and external actors (e.g. the police) can do to promote those feelings.

'Key skills' building in schools as a possible approach to reducing and preventing challenging behaviour.

BACKGROUND: Building 'key skills' may help prevent the development of challenging behaviour in children with an intellectual disability. The aim of this paper was to extend the current limited evidence in this area. METHOD: We undertook two studies with children with an intellectual disability in school settings: (1) a cross-sectional replication study exploring the relationship between 'key skills' and challenging behaviour. (2) a longitudinal study follow-up exploring change in 'key skill' levels and challenging behaviour. RESULTS: The replication study recruited 74 participants, those scoring lowest in 'key skill' had a 94% chance of having challenging behaviour; those with the highest scores had a 6% chance. The follow-up study recruited 39 participants, we found a significant increase in children's 'key skill' level (p < .001) and a decrease in their challenging behaviour (p = .046). CONCLUSION: Building 'key skills' in children with an intellectual disability may help reduce or prevent challenging behaviour.

Challenging behaviour and epilepsy in patients with intellectual disability: frequency and mutual association.

Comorbid epilepsy and challenging behaviours is quiet common in patients with ID (intellectual disability). This study aims to determine the frequency and mutual association between epilepsy and challenging behaviours. In this cross-sectional analytical study, 252 patients were enrolled through convenient sampling technique. Comorbid epilepsy and CB (challenging behaviour) were seen in 111 (44.6%) and 116 (46.6%) patients, respectively. Epilepsy and severity of intellectual disability (ID) are statistically and significantly associated with challenging behaviour. This study concluded that comorbid epilepsy is more common among people with ID as compared to the general population. The clinical variables, i.e. comorbid epilepsy and severity of ID have statistically significant association with the CB.

A retrospective cohort study of prescription drug use among youth with intellectual/developmental disabilities in British Columbia.

BACKGROUND: People with intellectual/developmental disabilities (IDD) are known to have high rates of prescription drug use, particularly for psychotropic medications. This is of concern due to the many side effects associated with these medications and because of the risks of polypharmacy. In this paper we compare the most commonly dispensed drugs and all psychotropic medications for youth with IDD compared with youth without IDD. METHODS: Using population-level administrative health data over a 10-year period, this study examined medications dispensed to youth with an IDD aged 15-24 years compared with youth without an IDD. The most common medications dispensed and the number of youth they were dispensed to were determined. As well a wide variety of psychotropic medications were examined. RESULTS: There were a total of 20 591 youth with IDD and 1 293 791 youth without IDD identified. Youth with IDD had higher odds of being dispensed pain medications, amoxicillin, salbutamol, levothyroxine and all the psychotropic medications (antidepressants, antipsychotics, anxiolytics, anti-adrenergic agents, mood stabilisers and stimulants). For youth with IDD, 6558 (31.85%) were dispensed two or more different psychotropic medications within a year, compared with 75 963 (5.87%) of youth without IDD. DISCUSSION: Compared to youth without IDD, youth with IDD had significantly higher odds of being dispensed most of the prescription medications studied, including all of the psychotropic medications. They were also twice as likely to be dispensed two or more medications from different classes of psychotropic drugs within the same year. These findings have important implications for the health of people with IDD and for their health care providers.

Association Between Challenging Behaviour and Sleep Problems in Adults Enrolled in the Global Angelman Syndrome Registry.

Angelman Syndrome (AS) is a rare genetic disorder that impacts 1:20,000 people. Challenging behaviour, such as severe injurious behaviour, aggression and frequent unprovoked episodes of laughter are a significant problem among adults with AS that adversely impacts an individual's quality of life. This study, for the first time, aims understand the characteristic of challenging behaviour, its frequency, and the factors associated with it in adults with AS. Data from participants with AS (N = 37; aged 18-46 years) registered with the Global Angelman Registry, were divided into challenging behaviour and non-challenging behaviour groups based on the presence or absence of 50% of the behaviours recorded in the registry. Descriptive statistics, chi-squared and t-test analysis were conducted to assess the impact of variables on challenging behaviour. Multiple regressions were conducted to investigate the predictors of challenging behaviour. 56% of the sample presented with challenging behaviour. Disorders of arousal, self-injury, behaviour dysregulation, repetitive behaviour, and the lack of physical therapy accounted for 59% of the variance of challenging behaviour in this population. It was found that challenging behaviour was very common in this population. A significant association was found between challenging behaviour and both sleep arousal and the lack of physical therapy. Sleep arousal and the lack of physical therapy were the key factors associated with challenging behaviour in this study. Targeted interventions are needed to decrease challenging behaviour and future research should focus on sleep interventions and increased opportunities for physical therapy.

A three-years follow-up of extra intensive support for individuals with intellectual disability and severe challenging behaviour in the Netherlands.

Adults with Intellectual Disability who show severe challenging behaviour need intensive individual support. If intensive support proves to be insufficient, extra intensive support can be provided in the Netherlands, which is characterized by more time for individual care. The present study evaluates the impact of extra intensive support over time. Client characteristics of adults receiving intensive support (IS, N=70) or extra intensive support (IS+, N=35) are compared and the impact of provided support on challenging behaviour (Developmental Behaviour Checklist-Adults), adaptive behaviour (Vineland II), and Quality of Life (San Martin Scale) is evaluated over a three years period. Compared to adults receiving intensive support, those receiving extra intensive support initially showed higher intensity of challenging behaviour, higher number of mental health diagnoses and stronger focus on goals to reduce challenging behaviour. Over time, intensity of challenging behaviour decreased in adults receiving extra intensive support, although Quality of Life and adaptive functioning did not improve. Results show that the indications for receiving extra intensive support are clear and that the extra support is effective over time. It is concluded that extra individual support is serving those who need this support.

Process evaluation of the implementation of the ABC method, an intervention for nurses dealing with challenging behaviour of patients with brain injury.

BACKGROUND: Introducing new working methods is common in healthcare organisations. However, implementation of a new method is often suboptimal. This reduces the effectiveness of the innovation and has several other negative effects, for example on staff turnover. The aim of the current study was to implement the ABC method in residential departments for brain injured patients and to assess the quality of the implementation process. The ABC method is a simplified form of behavioural modification based on the concept that behaviour operates on the environment and is maintained by its consequences. METHODS: Four residential departments for brain injured patients introduced the ABC method sequentially as healthcare innovation using a stepped-wedge design. A systematic process evaluation of the implementation was carried out using the framework of Saunders et al. Descriptive statistics were used to analyse the quantitative data; open questions were clustered. RESULTS: The training of the ABC method was well executed and the nursing staff was enthusiastic and sufficiently involved. Important aspects for successful implementation had been addressed (like a detailed implementation plan and implementation meetings). However, facilitators and barriers that were noted were not addressed in a timely manner. This negatively influenced the extent to which the ABC method could be properly learned, implemented, and applied in the short and long term. CONCLUSIONS: The most challenging part of the introduction of this new trained and introduced method in health care was clearly the implementation. To have a successful implementation serious attention is needed to tailor-made evidence-based implementation strategies based on facilitators and barriers that are identified during the implementation process. Bottlenecks in working with the ABC method have to be addressed as soon as possible. This likely requires 'champions' who are trained for the job, next to an organisation's management that facilitates the multidisciplinary teams and provides clarity about policy and agreements regarding the training and implementation of the new method. The current process evaluation and the recommendations may serve as an example for the implementation of new methods in other healthcare organisations.

Behavioural phenotype of SYNGAP1-related intellectual disability.

BACKGROUND: SYNGAP1- related intellectual disability (SYNGAP1-ID) is a rare genetic disorder presenting with intellectual disability (ID), epilepsy, maladaptive behaviours and communication challenges. To date, few studies have assessed the context in which these maladaptive behaviours occur. This study aims to investigate the prevalence of problem behaviours, characterise the behavioural phenotype and use well-validated measures to explore variables that maintain the behaviours. METHODS: Our sample includes 19 individuals diagnosed with SYNGAP1-ID and their parents. Parents provided information on behaviours that their children engage in, as well as their general behavioural dispositions. Well-validated measures (e.g., the Repetitive Behaviour Scale-Revised, Sensory Profile-2 and Vineland Adaptive Behaviour Scale) were used. A subset of individuals underwent further direct experimental assessment of their problem behaviour to identify the variables maintaining those problem behaviours. Parental reports were analysed using nonparametric statistical analysis; the direct assessments of individuals' problem behaviour were analysed using visual analysis and validated supplemental measures. RESULTS: All 19 individuals engaged in some form of maladaptive problem behaviour. Ratings of ritualistic, sameness and restricted behaviours measured by the RBS-R were commensurate with individuals diagnosed with idiopathic autism spectrum disorder (ASD) while self-injurious behaviours were endorsed at a higher level in SYNGAP1-ID when compared with idiopathic ASD. The problem behaviours in our cohort of patients with SYNGAP1-ID were maintained by automatic reinforcement and social attention and are positively correlated with atypical sensory responses. CONCLUSIONS: Individuals with SYNGAP1-ID engage in problem behaviours commensurate with other populations (e.g., those with ASD), they exhibit atypical response to sensory stimuli. Problem behaviours were frequently maintained by automatic reinforcement, which may result from a dysregulated sensory system. Children with SYNGAP1-ID may benefit from strategies used in persons with ASD.

Impact of the emotional development approach on psychotropic medication in adults with intellectual and developmental disabilities: a retrospective clinical analysis.

BACKGROUND: Compared with the general population, adults with an intellectual developmental disorder (IDD) are more likely to develop mental health problems and to receive high levels of psychotropic medication, particularly antipsychotics. The emotional development (ED) approach may help to better understand the nature of challenging behaviour (CB) and tailor treatment and support accordingly. The aim of this retrospective study was to investigate the impact of the ED approach on the prescription of psychotropic medication during inpatient psychiatric treatment. METHODS: The clinical data of 1758 patients were analysed within a retrospective study design over a period of 12 years. ED level was assessed (1) for the first time (INITIAL-SEO), (2) during a previous hospital stay (PAST-SEO) or (3) not at all (NO-SEO). The effects of the ED assessment and the respective intervention during the current admission on the number of psychotropics and the number and dosage of antipsychotics were analysed for the total sample, including those with CB, autism spectrum disorders and psychosis. Group differences were analysed by a chi-square test and a one-factorial analysis of variance. For analysing the impact of the application of the ED approach on psychotropic medication, a covariance model was applied. Changes between the subsamples were analysed by t-tests for dependent samples. RESULTS: The ED approach had a significant impact on reducing the overall amount of psychotropic medication and the dosage of antipsychotics in all patients with IDD. These effects were mainly attributable to those showing CB. In patients with autism spectrum disorders, the developmental approach reduced the number of antipsychotics. No effects could be observed in patients with psychosis; in this subsample, both the number and dosage of antipsychotics increased. CONCLUSIONS: The application of the ED approach in the current hospital stay reduced the number of psychotropic drugs and the number and dosage of antipsychotics, especially in those patients with IDD and CB, but also in those with autism spectrum disorders.