Year 2012 2012 2012 – 2013 2013 2014
Wave W1 N/A W2 W3 W4
Time point Baseline/screening Intervention 6 months 12 months 24 months
Group Whole cohort RCT RCT RCT Whole cohort
# 1802 452 Whole cohort: 1269 (RCT: 397)
Speech T:ARS T:ARS T:ARS (RCT only)
Language T:ARS T:ARS T:ARS (RCT only)
O:CELF-4 *
O:CNRep *
Literacy T:ARS T:ARS
T:ARS (RCT only)
Family history of language and literacy problems P:ELVS
Vocabulary O:NPVT *
Developmental evaluation
P:PEDS 1 2

Featured measurements

ARS: Academic Rating Scale
CELF-4: Clinical Evaluations of Language Fundamentals - Fourth Edition, Australian Standardised Edition
CNRep: Children's Test of Nonword Repetition
ELVS: Early Language in Victoria Study derived
NPVT: National Institutes of Health (NIH) Toolbox Picture Vocabulary Test
PEDS: Parents' Evaluation of Developmental Status
Short-Form Language Measure
WRAT4: Wide Range Achievement Test 4


* The Centre of Research Excellence in Child Language has developed a language testing app – called the Short-Form Language Measure – composed of NPVT, CNRep and the Recalling Sentences subtest from CELF-4.  The app has been produced subject to third party licences and any interest in using this app must be directed to the CRE-CL (please contact Penny Levickis).  Employees must not share this app without the CRE-CL being aware of, and approving, such uses.
1 PEDS includes screening questions relating to development of speech and language, motor skills, learning and behaviour
2 Authorised Australian Version. Adapted with permission from Frances Page Glascoe, Ellsworth & Vandermeer Press Ltd.


A = Administration report abstraction
C = Index child report (reporting on others)
L = Linkage (to other databases)
M = Medical records data abstraction
O = Observation/direct assessment
N = Nurse report
P = Parent/primary caregiver report
Pe = Peer report
S = Self report
T = Teacher report
X = Undefined
X BF = Pertaining to biological father
X BM = Pertaining to biological mother
C = Pertaining to index child
X F = Pertaining to father
X Fam = Pertaining to family
X G = Pertaining to grandparent(s)
X M = Pertaining to mother
X P = Pertaining to parent(s)
X Pa = Pertaining to partner
X Pe = Pertaining to peers
X Pr = Pertaining to primary caregiver
X Si = Pertaining to sibling(s)