A mental disorder, also referred to as a mental illness, a mental health condition, or a psychiatric disability, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. A mental disorder is also characterized by a clinically significant disturbance in an individual's cognition, emotional regulation, or behavior, often in a social context. Such disturbances may occur as single episodes, may be persistent, or may be relapsing–remitting. There are many different types of mental disorders, with signs and symptoms that vary widely between specific disorders. A mental disorder is one aspect of mental health.
The diagnostic category pervasive developmental disorders (PDD), as opposed to specific developmental disorders (SDD), was a group of disorders characterized by delays in the development of multiple basic functions including socialization and communication. It was defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM), and the International Classification of Diseases (ICD).
Pervasive developmental disorder not otherwise specified (PDD-NOS) is a historic psychiatric diagnosis first defined in 1980 that has since been incorporated into autism spectrum disorder in the DSM-5 (2013).
Developmental disability is a diverse group of chronic conditions, comprising mental or physical impairments that arise before adulthood. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in "language, mobility, learning, self-help, and independent living". Developmental disabilities can be detected early on and persist throughout an individual's lifespan. Developmental disability that affects all areas of a child's development is sometimes referred to as global developmental delay.
Emotional and behavioral disorders refer to a disability classification used in educational settings that allows educational institutions to provide special education and related services to students who have displayed poor social and/or academic progress.
Learning disability, learning disorder, or learning difficulty is a condition in the brain that causes difficulties comprehending or processing information and can be caused by several different factors. Given the "difficulty learning in a typical manner", this does not exclude the ability to learn in a different manner. Therefore, some people can be more accurately described as having a "learning difference", thus avoiding any misconception of being disabled with a possible lack of an ability to learn and possible negative stereotyping. In the United Kingdom, the term "learning disability" generally refers to an intellectual disability, while conditions such as dyslexia and dyspraxia are usually referred to as "learning difficulties".
The Council on Quality and Leadership is a U.S. organization which provides accreditation and training for agencies providing services for people with intellectual, psychiatric, and developmental disabilities. It was established in 1969.
Intellectual disability (ID), also known as general learning disability, and formerly mental retardation, is a generalized neurodevelopmental disorder characterized by significant impairment in intellectual and adaptive functioning that is first apparent during childhood. Children with intellectual disabilities typically have an intelligence quotient (IQ) below 70 and deficits in at least two adaptive behaviors that affect everyday living. According to the DSM-5, intellectual functions include reasoning, problem solving, planning, abstract thinking, judgment, academic learning, and learning from experience. Deficits in these functions must be confirmed by clinical evaluation and individualized standard IQ testing. On the other hand, adaptive behaviors include the social, developmental, and practical skills people learn to perform tasks in their everyday lives. Deficits in adaptive functioning often compromises an individual's independence and ability to meet their social responsibility.
Classic autism, also known as childhood autism, autistic disorder, (early) infantile autism, infantile psychosis, Kanner's autism, Kanner's syndrome, or (formerly) just autism, is a neurodevelopmental condition first described by Leo Kanner in 1943. It is characterized by atypical and impaired development in social interaction and communication as well as restricted, repetitive behaviors, activities, and interests. These symptoms first appear in early childhood and persist throughout life.
Research published from 2000 to 2020 illustrates increased prevalence rates of sexual violence against people with intellectual disabilities, compared to the general population.:61 The World Health Organization (WHO) funded a study which concluded that 15% of the adult population worldwide in 2012 had a disability, putting them at increased risk of physical, sexual, and intimate partner violence. Of that 15%, 6.1% had intellectual disability with 5.5% experiencing sexual violence. In another 2012 report, the WHO found that worldwide, children with intellectual disabilities experienced a 4.6 times greater risk of sexual violence than those without disability.
Paul Wehman is a professor of counseling and special education at the School of Education, Virginia Commonwealth University. He also is Director of the Rehabilitation Research and Training Center.
Autism, or autism spectrum disorder (ASD), is a neurodevelopmental disorder characterized by repetitive, restricted, and inflexible patterns of behavior, interests, and activities, as well as deficits in social interaction and social communication. Autism generally affects a person's ability to understand and connect with others, as well as their adaptability to everyday situations, with its severity and support needs varying widely across the underlying spectrum. For example, some are nonverbal, while others have proficient spoken language.
Intermediate Care Facilities for Individuals with Intellectual Disabilities (ICF/IID), formerly known as Intermediate Care Facilities for Mental Retardation (ICF/MR), is an American Medicaid-funded institutional long-term support and service (LTSS) for people with intellectual disabilities or related conditions. Section 1905(d) of the Social Security Act enacted benefits and made funding available for "institutions" for individuals with intellectual or related conditions. According to federal law 42 CFR § 440.150 the purpose of ICD/IIDs is to "furnish health or rehabilitative services to persons with Intellectual Disability or persons with related conditions."
The Vineland Adaptive Behavior Scale is a psychometric instrument used in child and adolescent psychiatry and clinical psychology. It is used especially in the assessment of individuals with an intellectual disability, a pervasive developmental disorder, and other types of developmental delays.
Michael Lee Wehmeyer is the Ross and Marianna Beach Distinguished Professor in Special Education in the Department of Special Education at the University of Kansas. His research focuses on self-determination and self-determined learning, the application of positive psychology and strengths-based approaches to disability, and the education of students with intellectual or developmental disabilities. He is Director and Senior Scientist at Kansas University's Beach Center on Disability. He formerly directed the Kansas University Center on Developmental Disabilities.
Sakineh Simin M. Redjali (Persian: سکینه سیمین رجالی; born 1934 is an Iranian–American psychologist and author. Simin Redjali was the first female professor of National University of Iran.
Steven Reiss (1947–2016) was an American psychologist who contributed original ideas, new assessment methods, and influential research studies to four topics in psychology: anxiety disorders, developmental disabilities, intrinsic motivation, and the psychology of religion.
The rapid prompting method (RPM) is a pseudoscientific technique that attempts to aid people with autism or other disabilities to communicate through pointing, typing, or writing. Also known as Spelling to Communicate, it is closely related to the scientifically discredited technique facilitated communication (FC). Practitioners of RPM have failed to assess the issue of message agency using simple and direct scientific methodologies, saying that doing so would be stigmatizing and that allowing scientific criticisms of the technique robs people with autism of their right to communicate. The American Speech-Language-Hearing Association has issued a statement opposing the practice of RPM.
Intellectual functioning refers to the "general mental ability that includes reasoning, planning, problem solving, abstract thinking, comprehending complex ideas, learning quickly and learning from experience". Significantly limited or impaired intellectual functioning characterizes intellectual disabilities.
