DSM IV 1 Flashcards
hallmarks of mental retardation
<70 IQ
deficits in adaptive functioning in at least 2 areas
onset before age 18
origin of mental retardation - prenatal vs. perinatal vs. postnatal
75% of cases are prenatal
10-15% perinatal (from one pound in utero to one month after birth)
10-15% postnatal
genetic vs environmental factors in MR
genetic factors account for only about 5% of cases of mental retardation (e.g. chromosomal abnormalities such as Down’s)
environmental factors play a much larger role - usually during embryonic development - poor maternal nutrition, poor maternal personal health habits, limited access to health care, exposure to in utero to pollutants, chemical toxins (e.g. maternal alcohol consumption)
MR comorbidities
3 - 4X more comorbid mental disorders in comparison with general population
most common - ADHD, Mood DIsorders, PDDs, Stereotypic Movement DIsorders
Male to female ratio of MR
3:2
mild mental retardation
85% of all individuals with MR
IQ 55-70
can develop social and communication skills
minimal sensorimotor impairments
can acquire skills up until 6th grade level
may achieve a minimum level of self-support
moderate mental retardation
40-55 IQ
develop communication skills and can usually attend to personal care
progress up to 2nd grade level in academic subjects
able to perform unskilled or semi-skilled work under supervision
profound mental retardation
<25 IQ
significant impairment in sensorimotor functioning and typically need highly structured environment
likely to have underlying neurological basis for their disorder
how to diagnose a learning disorder
significant discrepancy between IQ and achievement (2 or more SDs)
learning problem interferes with academic achievement or activities of daily living
comorbid disorders with LD
Conduct Dsorder
ADHD
ODD
Depressive Disorders
Reading Disorder
type of LD
significant deficits in reading achievement
seldom diagnosed before end of kindergarten
Mathematics Disorder
type of LD
significant deficits in mathematics ability
Disorder of Written Expression
type of LD
deficiency in writing skills, which interferes with writing grammatically correct sentences and organized paragraphs
Developmental Coordination Disorder
Motor Skills Disorder
deficits in daily activities that require motor coordination, which may be manifested by marked delays in achievement motor milestones or by clumsiness, poor performance in sports, or poor handwriting
Expressive Language Disorder
Communication Disorder
performance that is significantly below what would be expected in the area of expressive language
1/2 of children tend to outgrow it, while other half tend to have more long-lasting difficulties
Mixed Receptive-Expressive Language Disorder
Communication Disorder
symptoms of Expressive Language Disorder as well as problems in receptive language ability
Phonological Disorder
Communication Disorder
involves errors in sound production and use
including substituting one sound for another or omitting sounds such as final consonants
Stuttering
Communication Disorder
disturbance in the normal fluency and time patterning of speech, characterized by sound and syllable repetitions, introjections, broken words, blocking, circumlocutions, and monosyllabic whole-word repetitions
considered normal until about age 2 or 3
Pervasive Developmental Disorders
severe and pervasive problems in several areas of development, including reciprocal social interactions, communication, or presence of stereotyped behavior, interests, and activities
Autistic Disorder
PDD a) impairment in social interaction b) impairment in communication c) restricted repertoire of activities onset must be prior to age 3
comorbidities of Autistic Disorder
75% of children also diagnosed with Mental Retardation
best prognosis with Autistic Disorder
late onset
high IQ
when child speaks before age 5
male: female ratio for Autistic Disorder
4 or 5 : 1
savant
individual who has lower intelligence, but has striking and unusual abilities
Rett’s Disorder
PDD
between ages of 5 months and 48 months,
sudden deceleration of head growth,
acquisition of stereotyped hand movements, loss of social engagement, and appearance of poorly coordinated movements
severely impaired language development with psychomotor retardation
found only in females
Childhood Disintegrative Disorder
PDD
more common among males
normal development for 2 years, followed by significant loss of previously acquired skills before age 10 in at least two areas: language, social skills, play, motor skills, and bowel/bladder control
Asperger’s Disorder
PDD
impaired social interaction and restricted repertoire of behavior, but not language, cognitive problems, or adaptive problems (other than social interaction)
more common in males
onset somewhat later than Autistic Disorder
ADHD
at least six months
inattention and/or hyperactivity-impulsivity
some of symptoms must have been present before age 7
must occur in at least two settings and interfere with functioning