Straight from the horse's mouth: Increasing self-report in mental health assessment in individuals with intellectual disability

Mental Health Services for Adults With Intellectual Disabilities: A Qualitative Study of Patient Characteristics, Associated Factors and Consequent Needs for Adaptation in Assessment and Treatment

BACKGROUND

Individuals with intellectual disabilities are at increased risk of mental health disorders, but may struggle to access appropriate services. While assessment/treatment may need to be adapted, knowledge is limited about what such adaptations may entail.

METHOD

During a service development project, the participants (33 professionals, 13 family members) were asked to identify the characteristics/associated factors of individuals with intellectual disabilities and co-occurring mental health disorders. Using thematic analysis, 1103 participant responses were analyzed to identify the needs for adaptation in assessment/treatment.

RESULTS

Three core themes were identified: (1) A broader assessment: Gaining an accurate and comprehensive understanding of the individual's history, abilities and difficulties, (2) Adjusting/modifying existing treatment strategies, (3) Ensuring that the individual's day-to-day needs are met.

CONCLUSIONS

According to the participants, assessment/treatment of mental health disorder in this population requires more time and broader assessments are necessary. Family/caregiver involvement and cross-service organisation/collaboration represent other important adaptations.

Does adapting a self-report instrument to improve its cognitive accessibility for people with intellectual disability result in a better measure? - A cognitive interview study

BACKGROUND AND AIMS

We investigated whether improving the cognitive accessibility of a widely used self-report measure leads to better understanding and more accurate answers in a sample of adults with mild intellectual disability and borderline intellectual functioning.

METHODS AND PROCEDURES

We undertook a series of cognitive interviews before and after adaptation of the instructions and selected items of an existing self-report measure of adaptive functioning. Interview results and participant feedback were supplemented with quantitative comparisons between participant and carer scores.

OUTCOMES AND RESULTS

Adaptation based on participant experiences and preferences combined with evidence-informed guidelines improved understanding and accuracy. Self-report and carer-report scores showed greater convergence after adaptation; this occurred because people with intellectual disabilities appeared to understand the self-report measure more effectively.

CONCLUSIONS AND IMPLICATIONS

The results show that adaptation of the self-report instrument to suit the needs and preferences of people with mild intellectual disability or borderline intellectual functioning leads to a more accessible measure and more reliable and valid results. Results also highlight the importance of complementing proxy reports with a first-person perspective in assessment as clients and informants may differ in their assessment of behavior and skills.

Good mental health in people with intellectual disabilities: a systematic review

While mental disorders have been broadly researched in people with intellectual disabilities (ID), comparatively less attention has been given to the conceptualisation of good mental health for this population. To capture existing concepts, definitions and measurement approaches of good mental health a systematic literature review was conducted following PRISMA guidelines. The search was carried out in eleven databases, using various synonyms of (i) intellectual disability, (ii) mental health, (iii) wellbeing, (iv) definition, and (v) assessment. A total of 2,046 datasets were identified, of which 37 met the inclusion criteria and were analysed using reflexive thematic analysis and content analysis. Results show four main themes: (1) environment, (2) absence of mental illness, (3) physical health, and (4) psychosocial functioning. The fourth was the most dominant theme and was further divided into five sub-themes: (1) emotionality, (2) interpersonal relations, (3) realise own potential, (4) personal resources, and (5) overall appraisal of life. Our findings reveal different conceptualisations of wellbeing, which is a vital part of good mental health, but highlight a notable research gap in the actual definition and conceptualisation of good mental health for people with ID.

Preliminary feasibility study of a cognitive stimulation therapy programme for older adults with an intellectual disability

BACKGROUND

Despite the increased risk for people with an intellectual disability developing dementia, post-diagnostic psychosocial supports such as cognitive stimulation therapy (CST) are not routinely offered and there is limited research examining this intervention with people with intellectual disabilities. The aim of this study was to explore the feasibility of CST for older adults with intellectual disability to support active ageing.

METHODS

Five client participants attended a 14-session CST group and four staff attended a focus group. Reflexive thematic analysis was used to investigate the client and staff narratives.

RESULTS

Three key themes were generated: (1) Brain Health, (2) Connecting with others, and (3) Barriers and Enablers.

CONCLUSION

Findings indicated the suitability of CST as a way of supporting active ageing for older adults with intellectual disability. This study adds to the growing knowledge about service provision for older adults and their changing needs as they age and identifies clinical implications such as staff training to support intervention adherence.

Bias in assessment of co-occurring mental disorder in individuals with intellectual disabilities: Theoretical perspectives and implications for clinical practice

Influence from bias is unavoidable in clinical decision-making, and mental health assessment seems particularly vulnerable. Individuals with intellectual disabilities have increased risk of developing co-occurring mental disorder. Due to the inherent difficulties associated with intellectual disabilities, assessment of mental health in this population often relies on a different set of strategies, and it is unclear how these may affect risk of bias. In this theoretical paper, we apply recent conceptualisations of bias in clinical decision-making to the specific challenges and strategies in mental health assessment in intellectual disabilities. We suggest that clinical decision-making in these assessments is particularly vulnerable to bias, including sources of bias present in mental health assessment in the general population, as well as potential sources of bias which may be specific to assessments in this population. It follows that to manage potential bias, triangulating information from multi-informant, multi-method, interdisciplinary assessment strategies is likely to be necessary.

Assessment of adaptive behavior in people with intellectual disabilities: Design and development of a new test battery

Background

Adaptive behavior is an important characteristic of people with intellectual disabilities, and it has been associated with a person's performance in social and work contexts. Indeed, adaptive behavior denotes what a person does independently, without help, support, reminders, or prompts. In Peru, available measures of adaptive behavior are commercial; thus, there is a need for an open-access tool to assess the adaptive behavior of people with intellectual disabilities. For this reason, the aim of the study was to design and develop a new Adaptive Behavior Test Battery for people from 13 to 60 years old with intellectual disabilities who have an interest in being part of the economically active population.

Methods

A cross-sectional design was defined, starting with a qualitative approach to designing and constructing the item pool for the test battery. Then, quantitative indexes Aiken's V for content validity and Krippendorff's alpha for inter-observer reliability were estimated, resulting in a first version of the three subscales that comprised the test battery. The initial versions were tested on a sample of 566 persons with intellectual disabilities from two regions of Peru: Lima (Coast) and San Martín (Jungle). The internal structure was analyzed under a factor analysis approach, along with internal consistency measures of reliability. Further analyses of invariance regarding gender, region, and age were carried out.

Results

Three observer subscales were proposed: Daily living activities (11 items), Instrumental skills (4 items), and Communication (9 items). All subscales showed excellent psychometric properties denoted by the Aiken's V coefficient, Krippendorff's alpha, factor analysis, internal consistency analysis, and invariance analyses.

Conclusion

The developed a new Adaptive Behavior Test Battery is a useful tool for the measurement of adaptive behavior and the monitoring of social and labor inclusion programs for people with intellectual disabilities.

Development and content validity of the Person Experiences Interview Survey (PEIS): a measure of the mental health services experiences of people with developmental disabilities

Purpose

People with developmental disabilities and mental health service experiences have a right to be included in healthcare decisions, including the evaluation of their mental health services and providers. However, few self-report measures address this need. This study aimed to fill this gap by developing and evaluating the content validity, including comprehension, relevance, and comprehensiveness, of the Person Experiences Interview Survey (PEIS) with people with developmental disabilities and mental health experiences.

Methods

The research team established a measurement framework based on the Family Experiences Interview Survey (FEIS), resulting in 21 PEIS items that were written in collaboration with young adults with developmental disabilities and mental health service experiences. Comprehension, relevance, and comprehensiveness were evaluated through cognitive interviews with people with developmental disabilities and mental health service experiences (respondents; n = 9) ages 23-49 years. Comprehensiveness and relevance were also evaluated in focus groups with family caregivers (n = 9) and mental health providers (n = 10) who serve this population. Two researchers independently coded open-ended responses to the PEIS for comprehension. A content validity index (CVI), indicating relevance, was calculated for each participant group for each item, and comprehensiveness was rated for item sets.

Results

Fifteen of the 21 items met the criteria of ≥80% comprehension, with 89-100% of responses containing all or some intended information. All items met the CVI ≥80% criterion in at least two of the three groups. In all item sets, between 1 and 4 family members or providers felt one question was missing. Respondents used the response scale in a manner that corresponded with their open-ended descriptions, and family caregivers and providers had positive feedback about the response scale's visual cues and number of choices. Using these findings, four items were removed and six items were revised, resulting in a 17-item measure.

Conclusion

This study presents a novel and promising measure, the Person Experiences Interview Survey (PEIS). It also demonstrates that the employment of accessible methods allows people with developmental disabilities to meaningfully evaluate mental health services and providers. The PEIS shows great promise for application in the field by engaging those directly involved in the evaluation of mental health services and providers.

Developing the Diagnostic Interview for Adolescents and Adults with Mild/Moderate Intellectual Disabilities: An interview schedule of mental disorders (DIAAID)

Introduction

Young people with intellectual disabilities (ID) are at an increased risk for experiencing mental health issues compared to their peers without disabilities. Further, there are limited resources available to help accurately assess mental health disorders and that are accessible for adolescents with ID.

Method

This paper describes the iterative development and pilot testing of the Diagnostic Interview for Adolescents and Adults with Intellectual Disabilities (DIAAID). The authors utilized Evidence Center Design and Universal Design principals to develop the DIAAID; a multi-informant diagnostic interview.

Results

The DIAAID development resulted in the creation of 15 adolescents disorder interviews and 24 caregiver disorder interviews. Preliminary results suggest that the DIAAID is a feasible and accessible diagnostic interview for adolescents with ID and their caregivers.

Discussion

Lessons learned from DIAAID implementation and future areas research are discussed.

Proxy-report in individuals with intellectual disability: A scoping review

BACKGROUND

Views can be collected from individuals (self-report) or others on their behalf (proxy-report).

OBJECTIVE

We aimed to review the literature on methods and statistical approaches used to evaluate observer versus self-report responses from individuals with intellectual disability or Down syndrome.

METHODS

A series of key questions related to statistical approaches and data collection methods were formulated a priori to inform the search strategy and review process. These addressed the topics of self-report in individuals with intellectual disability, including Down syndrome. Using the National Library of Medicine database, PubMed, detailed literature searches were performed. The quality of available evidence was then evaluated, the existing literature was summarised, and knowledge gaps and research needs were identified.

RESULTS

Fifty relevant original articles were identified which addressed at least one key question. Study details, including: research design, internal validity, external validity, and relevant results are presented. Review of studies of individuals with intellectual disability which used a variety of statistical approaches showed mixed agreement between self-report and proxy-report.

CONCLUSION

Few studies identified to-date have used self-report from individuals with Down syndrome, but lessons from the existing intellectual disability literature can guide researchers to incorporate self-report from individuals with Down syndrome in the future.