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The Northrop Grumman B-21 Raider is an American strategic bomber in development for the United States Air Force (USAF) by Northrop Grumman. Part of the Long Range Strike Bomber (LRS-B) program, it is to be a stealth intercontinental strategic bomber that can deliver conventional and thermonuclear weapons.
Autism spectrum disorder (ASD) is a neurodevelopmental disorder that begins in early childhood, persists throughout adulthood, and affects two crucial areas of development: social communication and restricted, repetitive patterns of behavior. [ 1 ] There are many conditions comorbid to autism spectrum disorder, such as attention deficit ...
A wide variety of postnatal contributors to autism have been proposed, including gastrointestinal or immune system abnormalities, allergies, and exposure of children to drugs, infection, certain foods, or heavy metals. The evidence for these risk factors is anecdotal and has not been confirmed by reliable studies.
A 2003 review of epidemiological studies of children found autism rates ranging from 0.03 to 4.84 per 1,000, with the ratio of autism to Asperger syndrome ranging from 1.5:1 to 16:1; [145] combining the geometric mean ratio of 5:1 with a conservative prevalence estimate for autism of 1.3 per 1,000 suggests indirectly that the prevalence of AS ...
Screenshot from the PEBL computerized version of the Wisconsin Card sort. Purpose. measure frontal lobe dysfunction. The Wisconsin Card Sorting Test (WCST) is a neuropsychological test of set-shifting, which is the capability to show flexibility when exposed to changes in reinforcement. [1][2] The WCST was written by David A. Grant and Esta A ...
assess autism in children, adolescents, and adults. The Autism Diagnostic Observation Schedule (ADOS) is a standardized diagnostic test for assessing autism spectrum disorder. The protocol consists of a series of structured and semi-structured tasks that involve social interaction between the examiner and the person under assessment.
Childhood disintegrative disorder, also known as Heller's syndrome and disintegrative psychosis, is a rare condition characterized by late onset of developmental delays in language, social function, and motor skills. Researchers have not been successful in finding a cause for the disorder. CDD has some similarity to autism, and is sometimes ...
Schizoid personality disorder (/ ˈ s k ɪ t s ɔɪ d, ˈ s k ɪ d z ɔɪ d, ˈ s k ɪ z ɔɪ d /, often abbreviated as SzPD or ScPD) is a personality disorder characterized by a lack of interest in social relationships, [9] a tendency toward a solitary or sheltered lifestyle, secretiveness, emotional coldness, detachment, and apathy. [10]