Intellectual Disability
IQ scores at least 2 SD below the mean (<70) in both cognitive and adaptive measures.
Learning Disability
Discrepancy:
Difference of < 1 SD (15 points) between intelligence scores (IQ) and achievement scores
Low achievement:
Low academic achievement (more than 1.5 SD below mean so < 78) in the setting of at least average cognition (within 1 SD of mean (within 85))
EI vs IEP
Children younger than 3 years of age for whom there are developmental or learning concerns should be referred to their state’s early intervention program or, if older than 3 years of age, to their local school district.
Play
Symbolic play - 12 months Parallel play - 18-24 months Fantasy play - 3 years Cooperative play - 3-4 years Can tell fantasy from reality - 5 years Games with rules - 6 years