2008, Linda Leung, Digital Experience Design: Ideas, Industries, Interaction, ISBN184150209X, page 70:
It is claimed that 20 per cent of children will have an intellectual disability at some time in their lives, which may result from medical problems, sensory impairments, hysical disabilities, emotional and behavioural difficulties, language impairments, or specific learning problems such as dyslexia or autism [Emerson et al. 2001:7].
2014, Suzanne Degges-White & Bonnie R. Colon, Expressive Arts Interventions for School Counselors, ISBN0826129986, page 309:
Students with intellectual disabilities, such as reading or developmental disabilities, may be given picture cues of certain emotions to match with nature.
2015, Ruiping Fan, Family-Oriented Informed Consent: East Asian and American Perspectives, ISBN3319121200:
Rather, my subjects are independent people who are older than 18—not teenagers or children—who are without intellectual disabilities—such as Alzheimer's disease.
Mental retardation, usually defined specifically as an IQ below 70 and/or severely below average ability to reason and to develop basic living skills.