LD and MH Flashcards
What is ASD characterised by? (3)
- Deficits in social interaction and communication
- Presence of stereotyped behaviour and restricted interests (DSM-V, 2013)
- Role of spectrum
What is Down syndrome? (2)
- Genetic disorder due to an extra chromosome 21
2. Typically associated with growth delays, intellectual disability and a characteristic phenotype
What did Howlin (2013) believe about MHD in ASD?
MHD can be a bigger barrier to functioning than the core symptoms in ASD
What lifetime rates did Hofvander et al (2009) find?
53% mood disorders
50% anxiety disorders
What rates of anxiety did White, Oswald, Ollendick & Schahill (2009) find?
11-84%
What did White et al (2009) find regarding anxiety in ASD?
Higher prevalence of anxiety in ASD compared to other developmental disorders
What did Howlin (2004) find about the rates of psychotic disorders?
- Despite Kanner (1949) believing a strong association between ASD and schizophrenia
- Rates of psychotic disorders are typical, if not lower than the general population
Why is there considerable variance in MHD rates in ASD?
Hutton et al (2008)
- Samples derived from psychiatric service referrals are going to suggest a high prevalence rate
- But samples selected from follow up studies suggest lower rates of 30%
Summarise the prevalence of MHD in ASD (5)
- Bigger barrier
- 53% mood, 50% anxiety
- 11-84% anxiety
- Considerable variation in rates
- Psychotic disorders = low/typical
What is a longitudinal trajectory?
Looks at development across the lifespan in cognitive, language and psychosocial domains
What are methodological problems associated with longitudinal studies? (3)
- Very few studies due to difficulties with following up
- Variation in findings
- Selection bias: only a small proportion of LF individuals can respond to psychiatric ratings and interviews (Howlin, 2014)
Summarise the cognitive trajectory in ASD (3)
- 75% remain stable, some deterioration (Howlin, Moss et al., 2014)
- Rigid behaviours persist but fluctuate in severity and type
- Performance IQ decline, verbal IQ increases
Summarise the language/communication trajectory in ASD (3)
- Small improvements
- Disparity between receptive and expressive language disappears
- Marked persisting problems in lang and comm (Seltzer et al., 2004)
Summarise the psychosocial trajectory in ASD (4)
- Increased prevalence of epilepsy and MHD -> independence
- Seltzer et al (2004) outcomes
- Dependent on families/care services
- Social isolation and independence
What psychosocial outcomes did Seltzer et al (2004) find in ASD? (5)
Very few:
- Marry
- Live independently
- Attend higher education
- Work competitive jobs
- Develop large social network
Summarise the cognitive trajectory in DS (3)
- Cognitive growth until adolescence, followed by decline in IQ
- Premature dementia and Alzheimer’s
- STM and LTM deficits
What is the average onset age for dementia in DS?
55 years (McCarron et al., 2014)