Relationship between RD and SLI (W4)

Question 1

Children with LI in kindergarten are at ____ risk for RD in 2nd (?%) and 4th (%?) grades.

Answer 1

HIGH risk - 53% in 2nd grade and 48% in 4th grade

Question 2

What 2 characteristics of the LI predict reading outcomes?

Answer 2

-Persistence & severity of language impairment

Question 3

SSD of mild-moderate severity, by itself, is not a risk for RD. T/F

Answer 3

TRUE

Question 4

SSD of moderate-severe severity, that persists, and co-occurs with LI, is a definite risk for RD. T/F

Answer 4

TRUE

Question 5

Are specific language impairment and dyslexia distinct disorders?

Answer 5

Yes, but there is a greater overlap than you’d expect by chance, alone.

Question 6

RD follows a _______ model. (deficit, delay, or cumulative model)

Answer 6

Deficit - grow at the same rate, just behind and never really catch up. (same growth trajectories - start out lower, stay lower, gap stays the same)

Question 7

Implications fo a “deficit” reading trajectory.

Answer 7

-If we can ID kids who may start out below (early ID), we may start better prevention before kindergarten – giving them a “boost” for a better growth trajectory.

Question 8

Like SLI and SSD, RD is highly ________ and highly _________.

Answer 8

familial & heritable.

Question 9

SLI probands for RD: __% occurrence in nuclear family members vs. __% in controls.

Answer 9

22% - 7%

Question 10

SLI heritability in twin studies:

RD heritability in twin studies:

Answer 10

• 50-97%

- 70%