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)
Developmental stage P:SDV P:SDV
Neurocognitive development diagnoses P:ELVS
Executive function P:BRIEF 1
T:BRIEF 1 (RCT only)
Intelligence O:WASI-II C
Developmental evaluation screener P:PEDS 2 3

Featured measurements

BRIEF: Behavior Rating Inventory of Executive Function
ELVS: Early Language in Victoria Study derived
PEDS: Parents' Evaluation of Developmental Status
SDV: Study Devised Variable
WASI-II: Wechsler Abbreviated Scale of Intelligence – Second Edition


1 Adapted and reproduced by special permission of the Publisher, Psychological Assessment Resources, Inc.
2 PEDS includes screening questions relating to development of speech and language, motor skills, learning and behaviour
3 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)