Intellectual
Disabilities
SLP 415
Cassandra Natali, MS, CCC-SLP
, Major
Characteristics
of ID
,What is an Intellectual Disability (ID)?
● An individual is considered to have ID
if:
○ Originates before the age of 18
○ Is characterized by significant
limitations in both intellectual
functioning and behavior
, A Historical Perspective
● ID was previously called mental retardation, cognitive
impairment, and developmental disability
● Historically, individuals with ID were described on level of
severity based solely on IQ:
○ Mild: 55-69 IQ
○ Moderate: 40-54 IQ
○ Severe: 25-39 IQ
○ Profound: Below 25 IQ
Disabilities
SLP 415
Cassandra Natali, MS, CCC-SLP
, Major
Characteristics
of ID
,What is an Intellectual Disability (ID)?
● An individual is considered to have ID
if:
○ Originates before the age of 18
○ Is characterized by significant
limitations in both intellectual
functioning and behavior
, A Historical Perspective
● ID was previously called mental retardation, cognitive
impairment, and developmental disability
● Historically, individuals with ID were described on level of
severity based solely on IQ:
○ Mild: 55-69 IQ
○ Moderate: 40-54 IQ
○ Severe: 25-39 IQ
○ Profound: Below 25 IQ