Definition of learning disability
A heterogenous group of disorders manifested by significant difficulties in the acquisition and use of listening, speaking, reading, writing, reasoning, or mathematical abilities
Learning disability
-concomitance with handicapping condns
Though a LD may occur concomitantly, it is not the direct result of those condns or influences
Learning disability
-prevalence
Ambiguous definition
~5% of school-aged children in USA are dx
Varies based on definition, age, population
Learning disability
-etiology (5)
Genetics Nutrition Low birth weight Psychological status Maturation of nervous system
Learning disability
-adaptive behaviors (3)
Withdrawal
Clowning
Regression
Reading dysfunction
-basics
Defined as a ”failure to read”
Most common and specific LD
OD intervention has a maximum impact when the reading problem is related to speed, comprehension, fatigue, and loss of place
Reading dysfunction
Avg or above avg intelligence
Adequate education opportunities
Normal sensory development (auditory, visual)
No frank brain damage
No emotional disturbance
Reading dysfunction -dyslexia —definition/description —importance of dx —prognosis
Specific type of reading dysfunction
Deficit in ability to interpret the symbols of written language
Important to differentiate from other non-specific/generalized reading dysfunctions (less severe)
Poor prognosis - exhibit alterations in brain function
Reading dysfunction
-letter recognition
—Gibson’s 2 stages
—reversals
1 - learns to look for the individual parts of letters -> enable to ID/name
2 - requires attention to directional orientation
Reversals should be 0 by 8yo/3rd grade
Reading dysfunction
-dyslexia
—3 types and descriptions
Dyseidesia - genetic, poor sight-word recognition, relies on time-consuming word-attack skills to decode many words
(“dySEEdesia”)
Dysphonesia - impaired phonetic ability, relies on sight-word vocabulary
Dysnemkinesia - reversals in writing/printing
Reading dysfunction
-dyslexia
—screener
Rapid screening tool for all 3 types
Requires ~5min
Less comprehensive than Jordan L/R reversal test
Reading dysfunction
-dyslexia
—eye movements
Incr number of fixations, regressions (seen on Visigraph)
Longer duration of fixations
Inefficient eye movements
Attention deficit disorder
~5% of school-aged children
Slight decrease
Attention deficit disorder
-characteristics (3)
Inattention
Impulsivity
Hyperacitivity
Attention deficit disorder
-ADHD and ADD symptoms can appear as early as
3-6 years and can continue thru adolescence and adulthood
Attention deficit disorder
-concomitant condns
Very common
E.g. behavior problems, anxiety, depression, autism spectrum
Attention deficit disorder
-diagnosis
—ADHD dx (16 or younger)
—ADD dx (16 or younger)
6+ hyperactive/impulse symtoms for at least 6 mo
6+ symptoms of inattention for at least 6 mo, but no signs of hyperactivity/impulsivity
Attention deficit disorder
-treatments
—stimulants
—non-stimulants
Most common type of med used for ADHD
Incr dopamine and norepi - play essential roles in thinking and attention
Take longer to start working
Used when pt has bothersome SE to stimulants, when it was ineffective, or in combo with a stimulant
Attention deficit disorder
-pharmacology review
—3 drugs
—SE of one
Methylphenidate (Ritalin)
Amphetamine (Adderall)
Dextroamphetamine (Dexedrine)
Dextro SE: adrenergic agonist