terms and models TERM 2 Flashcards
(131 cards)
reasons for atypical development
pre-natal effects
environmental effects
genetic effects - spontaneous mutations
multifaceted effects - ASD, ADHD
Autism and airport bags
improved overtime in accurately rejecting bags when target wasn’t present
16p11.2
duplication/deletion of certain part of chromosome
varied presentation leads to developmental delay
chromosomes
chromsome arm- short = p, long = q
chromosome region - labelled with numbers (lower = closer to centre)
genes
DNA lives inside.. > genes (21,000 types) > chromosomes (100/1000s genes) > cell
DNA inside genes inside chromosomes
copy number variants
duplicate or deletion
williams syndrome
deletion of 7q11.2
1 in 10,000
- distinct facial features, cardiac & cognitive abnormalities, highly sociable personality
cognitive profile:
- strengths in verbal, visuospatial IQ
agent that causes change in embryo
teratogen
down syndrome
duplicate of 21st chromosome
can be full or partial duplication
physical characteristics of DS
short neck
flat face
upward slanting eyes
wide short hands - deep crease
poor muscle tone
cognitive characteristics of DS
short attention span
impulsive
slow learning
delayed speech development
variable IQ (30-70)
chromosomes
small arm - p
large arm - q
fetal alcohol syndrome
alcohol = teratogen (changes embryo)
depends on when during gestation period alcohol is consumed
binge drinking worsens symptoms
ethanol = alters DNA and protein synthesis
Canada - 2-3% of school children
shares impairments with ADHD
intellectual disability
affects 1.4%
diagnosis based on IQ tests
classified as:
Mild: 52-69 (IQ)
moderte: 36-51
severe: 20-35
profound: <19
ADHD
inattention
hyperactivity and impulsivity
Autism
Deficits in social interaction
restricted, repetitive behaviour
atypical development
delayed, advanced development
the extremes of individual differences in development
patterns of atypical development
typical
delay - attainment gap, develop slower
delay with catchup - same as delay but catch up to advanced
lower starting point - rate of development normal but don’t catch up
advanced - good skill (more typical)
regression
skill developing typically then child loses aspect of skill (actively get worse)
seen in language and motor skills
typical in ASD, intellectual disabilties
development across multiple domains
social - eye contact, empathy, turn-taking
adaptive behaviour - living skills
cognitive - memory, IQ
physical - microcephaly (smaller head, macrocephaly (large head)
motor skill - balance
vineland adaptive behaviour scales
communication - receptive (understanding), expressive (spoken), written
daily living skills - personal, domestic, community (use of time, money)
socialisation - interpersonal relationships, play and leisure, coping skills
motor skills - fine, gross
maladaptive behaviour - internalising, externalising
scoring standardised tests
convert raw scores to standard scores against age-gender pp
removes individual differences
investigating atypical development
consider performance against appropriate control
investigate developmental trajectories
benefits of standardised scores
can standardise performance
easy to interpret
not one set way - allows for comparison