-
110
95
63
Performance Are
Motor
Concepts
Language
Total
ite
socioeco
indings
n these
TAL-3
itely v
eads
89
104
Self-Help
77
88
Social-emotional
Self-Help
TAL
reate
esti
ifies
ess:
nor
wh
65
Temir
Focial-emotional
acc
ch
"F
te
er
0
H-1510-09 *
3.
5
PAPER+COPY+FAX
雙頭螢光筆
as the Early Screening Profiles, Differential Abilities
Scale, and Peabody Picture Vocabulary Test-IV.
A recent study favorably evaluates the con
struct validity of the DIAL-3 through confirmatory
factor analysis (Assel & Anthony, 2009). As noted
the instrument was designed to screen for devel
opmental delays in three domains: motor abilities,
conceptual knowledge, and language competence.
An essential feature of the test is that separate scores
are reported for each domain. These domains and the
74 fubtests comprising them were rationally precon-
derved by the test authors. An important question is
whether the 21 subtests “hang together” statistically
in a manner that supports the rational grouping into
the three domains provided by the test developers, In
other words, do the three domains possess a latent
reality, or are they merely figments of the imagina-
tions of the test developers? Using test results for
1,560 children ages 3 to 6, Assel and Anthony (2009)
found an excellent fit between the three domains tra-
ditionally reported on the DIAL-3 and three empiri-
cally derived domains found through factor analysis,
which supports the construct validity of the test.
However, these authors did note that Articulation
subtest was a poor index of language compe
Cotchine subteet