RELATIONSHIP AMONG McCARTHY SCALES
OF
CHILDREN’S
ABILITIES, WPPSI, AND COLUMBIA MENTAL MATURITY SCALE
BETTY
L.
PHILLIPS
AND
RICHARD
A.
PASEWARK
University
of
Wyoming
ROBERT
C.
TINDALL
Wvereuz Foundation
Concurrent validity
of
the McCarthy Scales
of
Children’s Abilities for
60
kindergartners was investigated, using the WPPSI and Columbia Mental
Maturity Scale. Although correlations were
of
acceptable magnitude, the
General Cognitive Index of the MSCA
was
significantly lower than major
scores obtained on the other two testa. Analyses
of
the different scales
of
the
MSCA are also reported.
The McCarthy Scales of Children’s Abilities (MSCA) is a relatively recently
(1972)
published
test
designed to assess cognitive and motoric development of
children, ages
2.5
to
8.5
years. The MSCA consists of
18
tests which give rise to
six scales:
(1)
Verbal;
(2)
Perceptual-Performance;
(3)
Quantitative;
(4)
General
Cognitive;
(5)
Memory; and
(6)
Motor.
Although the MSCA has enjoyed increasing
use
in the assessment of children’s
abilities, few studies, (Davis,
1975;
Kasper,
1973)
except those by McCarthy her-
self (McCarthy,
1972),
are available which compare
it
to other commonly used
tests. Other studies on the MSCA concern racial differences (Kaufman
&
Kaufman,
1973a)
;
sex differences (Kaufman
&
Kaufman,
1973b)
;
differential performance of
minimally brain damaged children (Kaufman
&
Kaufman,
1974)
;
and the relation-
ship of MSCA
to
achievement test scores (Kaufman,
1973).
METHOD
Thirty boys and
30
girls in two kindergarten classes in Cheyenne, Wyoming,
were administered the MSCA, WPPSI, and the Columbia Maturity Scale. The
two schools utilized were situated in “average” Cheyenne neighborhoods, and sub-
jects represented a relative cross section
of
students found in a western town of
40,000
persons. Testing was conducted mainly during the spring semester. Testing
of individual students was accomplished on consecutive days with order of adminis-
tration altered
to
equalize
a
test acclimation effect.
Mean age
of
the group was
6.16,
with
a
range in years and months of
5.08
to
6.65.
For
males, the mean age was
6.20;
for females,
it
was
6.13
years.
Scales and comprising tests were analyzed within tests and between tests,
using Pearson’s
T.
For
those scores
of
subtests which formed
a
segment of other
scales, Guilford’s
(1965)
formula for part-whole correlation was employed.
RESULTS
Relationship Between
MSCA
and
WPPSI
While McCarthy
(1972)
does not use the term IQ,
it
is apparent that she
is
comparing the General Cognitive Index (GCI) with
I&.
Like IQ, the GCI
is
con-
sidered to represent
a
measure of general cognitive functioning and supposedly an
Requests for re rints should be sent to Richard
A.
Pasewark, Dept.
of
Psychology, University
of
Wyoming, P.
0.
%ox
3415,
Laramie,
WY
82071.
352
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