DRAWING
I. THE VARIOUS KINDS OF DRAWING
Manuel, who has made a careful psychological study of talent in drawing,
defines drawing as follows: “The term _drawing_ designates a process of
causing, by means of pencil, pen, brush, or other instrument, certain
lines or areas, or both, to appear on a given surface.” This definition
we may accept, if we add that the lines and areas are intended or can be
interpreted to signify something. We should not agree, for instance,
that the lines and areas which are caused to appear on the ground by the
scratching of a fowl should be included within the definition.
Having been thus defined, drawings may be classified into many kinds, in
accordance with the technique employed and the meaning conveyed. These
kinds are (1) copying, (2) representative drawing, (3) analytical or
diagrammatic drawing, (4) impressionistic drawing, (5) symbolic drawing,
and (6) caricature. This classification is exclusive of other forms of
graphic or representative expression, such as painting, sculpture, and
paper-cutting (used in the art of cutting silhouettes).
These various kinds of presentations differ as to the psychophysical
equipment constituting talent for them. It is therefore impossible, as
psychological study has proved, to discuss talent for drawing, without
specifying what kind of drawing is under consideration. Talent for
painting, sculpture, and cutting silhouettes has been little studied, so
that we are not in position to discuss these at the present time, either
as processes in themselves or as related to drawing.
The term _copying_ is self-explanatory. By _representative drawing_ is
meant a drawing having visual realism, which “looks like” that from
which it is drawn. _Analytical (diagrammatic) drawing_ is logical. It
may violate features essential to visual realism, stressing only aspects
from certain points of view, or abstracting a general principle. For
instance, the plan for the ground-floor of a house, or a schema of
arterial circulation, would be analytical. _Mechanical drawing_ comes
under this category, as does also, in a sense, _conventionalized
drawing_, for in conventionalized drawing some general principle or
pattern is abstracted from concrete instances, and is made the basis of
the design. A conventionalized bird does not look like any particular
bird ever seen by anyone, but, on the other hand, it looks like all
birds. It is a non-existent, composite, typical bird. _Impressionistic
drawing_ conveys an idea without much attention to visual realism. A
curve stands for a cloud, two vertical lines suggest trees, a few zigzag
marks indicate grass and flowers. In _symbolic drawing_ one thing is
drawn to represent another thing, as a crown is drawn to represent
royalty. Symbolic drawing does not, perhaps, deserve separate
classification, in a study of abilities, but for the present it seems
best to differentiate it. To originate symbolic drawings may call for
capacities not included in the other forms of graphic presentation.
Finally, _caricature_ is drawing that catches and exaggerates individual
peculiarities, most often with a result which is humorous or satirical.
The art of cartooning depends very largely on caricature and symbolism
for its effect. Cartoons interpret life. The successful cartoonist,
therefore, combines talent for drawing with a high degree of general
intelligence.
II. RAMIFICATIONS OF DRAWING THROUGH THE CURRICULUM
When we speak of drawing in the schools, there is a tendency to think
only of those performances which are taught and executed during the time
set aside for instruction by the teacher of drawing. But a little
reflection will show us to what an extent drawing ramifies through the
curriculum, and forms an element in achievement.
In geography map-drawing is required. In nature study, notebooks with
drawings of natural objects seen are frequently kept. In sciences taught
by the laboratory method drawing is an important element in success.
Zoölogy, physiology, and botany are especially taught through drawing.
In mechanics, and in engineering, drawing plays a prominent part. Thus
it comes about that school marks in all these subjects depend to some
extent on drawing of some kind. If psychological study shows capacity
for drawing to be largely or utterly dissociated from general
intelligence, the use of drawing to so great an extent, as a method of
recitation in the sciences especially, may be undesirable. The belief
that drawing used in this way fails to meet the need of many pupils,
otherwise apt in science, led Ayer to undertake the interesting
investigation to which it will be necessary to give our attention in
detail, throughout this chapter.
III. PSYCHOLOGICAL ANALYSIS OF TALENT IN DRAWING
It is quite interesting to notice that the analysis of ability in
reading, spelling, and arithmetic has been approached largely through
studies of the particularly deficient, while in the case of drawing and
music the approach has been through study of the gifted, to a greater
extent.
The psychographic study of individual talent in drawing was preceded by
many investigations of what children draw, at what ages various details
appear in drawings, how the drawings of one group compare with those of
another, and what people say about the drawings they make. These
studies, up to 1915, have been brought together by Ayer, and are so well
summarized by him in relation to the study of aptitude, that there is no
need to summarize them again. Those who desire to become familiar with
the whole literature of the psychology of drawing will do well to
consult Ayer’s work.
Several analyses of ability to draw have been undertaken, some through
study of the particularly deficient, some through study of the
conspicuously talented. Meumann thus states the causes of inefficiency
in drawing:
(1) The will to analyze and to notice forms and colors has not been
stimulated.
(2) The intention to analyze may be aroused, and yet the individual
may find the analysis too difficult. This is a matter of innate
talent.
(3) The memory of that to be represented may be deficient. It may be
incomplete or vague in form or in color. The memory of spatial
relations may be inadequate. This, too, is a matter of innate talent.
(4) There may be lack of ability to hold the image during the act of
drawing. This capacity is innate.
(5) The memory image and the perceptual image may not be coördinated
with the movements in drawing. This capacity is innate.
(6) The sight of the drawing in its imperfection as compared with the
memory image may disturb the image.
(7) The drawer may lack schemata on which to found his drawing.
(8) There may be failure to comprehend how one may project space in
three dimensions upon a plane.
(9) Manual skill may fail.
(10) There may be no artistic sense.
(11) Inability to draw may arise from a combination of various of
these deficiencies.
Manuel has offered the following analysis, after study of persons
especially talented:
The following characteristics, each an independent or partially
independent variable, seem closely related to ability in drawing:
(1) The ability mentally to note a visual form, and, by certain lines
and areas, to reproduce it or significant features of it.
(2) Ability to observe.
(3) Ability to select from a complex visual situation the most
representative and the most beautiful aspects.
(4) Memory for visual forms.
(5) Ability mentally to manipulate visual forms.
(6) Ability to control hand movements in accordance with visual
percept or image.
(7) Ability to invent, to bring together into new artistic
combinations the elements of different visual experiences.
(8) Ability to judge the beautiful in line, form, color, and
composition.
(9) Ability to discriminate differences in color.
(10) Ability to discriminate differences in visual magnitude.
(11) Acuity of vision.
(12) Interest in the act and products of drawing.
(13) General intelligence.
These two analyses may serve as samples, since they include practically
all the elements suggested by any other investigators. Jones has
recently furnished us with additional evidence that memory of objects
visually perceived and perception of perspective are probably important
contributors to drawing ability. Among 264 school children in the
seventh and eighth grades of the Evanston public schools, a correlation
was found of .83 between visual memory and ability to draw. Perception
of perspective and visual memory yielded a coefficient of .85.
As a result of administering more than twenty tests to 19 individuals
gifted in drawing, Manuel concludes that, “Persons talented in drawing
exhibit great individual differences in their psychophysical
characteristics.” Nevertheless, tests devised to measure status in the
traits listed in the analyses which have been made, would be expected to
yield, finally, a psychograph of talent in each of the various kinds of
drawing. Persons approximating these psychographs could then be
identified as talented in drawing, and those deviating widely from them
could be classified as deficient in ability to draw. The invention and
standardization of such tests is a matter for further research. At
present we have no means of gauging talent in drawing except by grading
a finished product on a scale of drawings, like Thorndike’s “Scale for
Measuring Achievement in Drawing.” Such a means does not always
adequately separate talent from training.
The hope that psychographs of ability to draw may be platted in future
does not mean that psychologists expect to find complete similarity
among those talented in drawing. Individuality is as intrinsic in
drawing as it is in handwriting. As a signature can be used for
identification in the hands of experts, so a picture bears the mark of
the particular psychophysical constitution that produced it. The
ordinary reader of current fiction knows, by inspection, whether a given
illustration has been made by May Wilson Preston or by Tony Sarg,
without seeing the signature. The drawings of Clarence Day are
inimitable.
IV. RELATIONS BETWEEN APTITUDE IN DRAWING AND GENERAL INTELLIGENCE
As long ago as 1903, Fischlovitz studied 350 high school freshmen, to
obtain the correlation between ability to draw and ability in other high
school studies. Correlations were computed between grades in drawing and
in other subjects. The conclusion was that, “Ability in drawing is
correlated to a greater degree with some of the subjects than with
others, but in no case is the correlation very strong, and that ability
in drawing is more of a special ability.”
Some years later, Elderton obtained a correlation of .416 between grades
in drawing and grades in classics, for one class, and of −.313 between
the grades in the same studies, in another class. The subjects were here
19 boys in each of two classes in an English public school. Ivanof found
among Swiss children a tendency for the able in drawing to include
somewhat more good all-round pupils than were included among the pupils
at large, and an opposite tendency among those poor in drawing. The
figures show, however, many pupils strong in general work listed among
those poor in drawing. Ayer obtained a correlation of .66 between grades
in drawing and other subjects, for 141 normal school students.
As Ayer points out, these methods are very crude as means of determining
to what extent drawing is a special ability. In the first place, since
drawing is used as a form of recitation in various school subjects, we
are obtaining to some extent a self-correlation in subjects like science
and geography. In the second place, grades in drawing do not specify
_what kind_ of drawing is graded. In the case of Ayer’s normal school
students, special inquiry showed that the grades in drawing were
computed from heterogeneous factors, including (_a_) ability in
representative drawing, (_b_) ability in designing, (_c_) ability in
artistic discrimination, (_d_) ability with color, washes, shading,
etc., (_e_) attendance, (_f_) discipline, (_g_) vocational interest.
School marks do not, therefore, isolate ability in any one kind of
drawing, from a medley of other relevant and irrelevant factors, the
mark being bestowed upon the total composite of factors.
Much more reliable as a method of research is the method of tests. In
Simpson’s data, already quoted, it is seen that drawing lengths shows
very slight coherence with other abilities. Other similar fragmentary
suggestive facts may be found, scattered through the literature. In 1916
Ayer undertook a well-planned investigation to determine how two kinds
of drawing, (1) representative drawing and (2) analytical drawing, are
related to (_a_) ability in verbal description and (_b_) achievement in
school subjects on the whole.
A turkey feather was drawn representatively, drawn analytically, and
described verbally by 51 high school pupils. Twenty-four hours after the
analytical drawing, the pupils were again required to make a diagram of
the feather and to answer questions about its parts. The results of
these various efforts were then scored by ten competent judges
independently, to obtain a final score for each pupil in each test.
The table, from Ayer, on page 149, shows the rank obtained by each pupil
in each kind of performance. The pupil who stands first in memory stands
thirty-eighth in representative drawing, and so forth down the series,
for each pupil.
In the following table, from Ayer, we see the coefficients of
correlation found between the various functions tested, as computed from
the ranks listed in the table on page 149.
TABLE FROM AYER
Showing correlations in case of representative drawing, retention,
diagramming (analytical drawing), and description.
═══════════════════════════════════════════════════════════════════════
ABILITIES CORRELATED COEFFICIENT OF CORRELATION
(PEARSON)
───────────────────────────────────────────────────────────────────────
Representative drawing and description .023
Diagramming and representative drawing −.052
Diagramming and description .231
Representative drawing and retention −.022
Description and retention .234
Analytical drawing and retention .433
═══════════════════════════════════════════════════════════════════════
TABLE FROM AYER
Rank in retention, representative drawing, description, and analytical
drawing, as tested in the case of 51 students in a first year high
school class in general science.
═════════════════╤═════════════════╤═════════════════╤═════════════════
RANK IN MEMORY │ RANK IN DRAWING │ RANK IN │ RANK IN DIAGRAM
│ │ DESCRIPTION │
─────────────────┼─────────────────┼─────────────────┼─────────────────
1│ 38│ 2│ 1
2│ 41│ 14│ 5
3│ 37│ 1│ 14
4│ 22│ 30│ 41
5│ 7│ 46│ 4
6│ 17│ 20│ 10
7│ 48│ 22│ 43
8│ 27│ 19│ 6
9│ 42│ 6│ 27
10│ 39│ 9│ 31
11│ 31│ 44│ 19
12│ 36│ 10│ 9
13│ 18│ 41│ 26
14│ 21│ 29│ 12
15│ 9│ 38│ 23
16│ 35│ 13│ 35
17│ 51│ 37│ 24
18│ 25│ 35│ 39
19│ 10│ 24│ 34
20│ 26│ 5│ 25
21│ 12│ 17│ 30
22│ 28│ 49│ 51
23│ 34│ 25│ 13
24│ 3│ 12│ 15
25│ 45│ 45│ 3
26│ 24│ 7│ 2
27│ 6│ 32│ 47
28│ 16│ 34│ 18
29│ 20│ 31│ 8
30│ 4│ 50│ 22
31│ 44│ 18│ 40
32│ 19│ 4│ 17
33│ 13│ 48│ 45
34│ 33│ 16│ 33
35│ 11│ 8│ 44
36│ 23│ 47│ 36
37│ 1│ 43│ 38
38│ 43│ 33│ 29
39│ 8│ 36│ 11
40│ 29│ 42│ 21
41│ 30│ 3│ 46
42│ 2│ 26│ 42
43│ 47│ 28│ 28
44│ 32│ 21│ 7
45│ 15│ 27│ 20
46│ 46│ 39│ 47
47│ 49│ 11│ 16
48│ 50│ 40│ 50
49│ 5│ 45│ 30
50│ 40│ 23│ 48
51│ 14│ 51│ 49
═════════════════╧═════════════════╧═════════════════╧═════════════════
The correlation between representative drawing and verbal description is
practically zero. From knowledge of ability in one of these functions,
among high school students, no inference can be made concerning the
other. Ability in diagramming (a kind of analytical drawing) is also not
correlated with representative drawing. On the other hand, the processes
of diagramming and description exhibit a slight tendency to positive
coherence, as do description and retention. Analytical drawing and
retention have a decided tendency to cohere, with a coefficient of .433.
In order to check his finding that school marks in drawing correlate
well with school marks in other subjects, Ayer correlated the scores of
these 51 high school pupils in _representative drawing_, with their
school marks and found an absence of relationship. “Ability in
representative drawing is not correlated with achievement in school
subjects, when it is isolated from the other factors of school drawing.”
Ayer concludes that different kinds of drawing are differently
correlated with general intelligence, and that it is necessary to
isolate the various kinds in determining the relationship. Analytical
drawing is a better indication of a pupil’s general grasp of subject
matter than is representative drawing. He recommends “that the device of
representative drawing shall be supplanted in laboratory teaching,”
since it appears to be a highly specialized function.
The question of the relationship between general intelligence and
ability to draw has also been investigated by Manuel, who took the IQ of
each of his talented subjects by means of Stanford-Binet. These were
pupils in elementary school, high school, and college. This means of
measuring general intelligence was ill adapted to its purpose in the
case of the college students and, also, probably in the case of many of
the high school students among his subjects, as the scale will not
measure the intelligence of very superior adolescents and adults.
Because of its limitations, the most intelligent adult in the world
cannot show an IQ of more than about 120 on it. Therefore some of
Manuel’s older subjects may have been much more intelligent than appears
on the record. The range of intelligence among those talented in drawing
may be even greater than the record shows. The tests as they stand show
that superior ability in drawing may accompany any degree of general
intelligence from very superior to very inferior. “We conclude therefore
that a certain elementary ability in graphic representation, such as is
required for success in elementary school drawing, is independent, or
partially independent, of general intelligence.”
It should be stated that presence of talent in drawing in the case of
these individuals was determined in part by testimony of teachers of
art, and in part by two tests, (1) the drawing of a house from memory,
and (2) the drawing of a wooden cart from the object. Both of these
would be classified as _representative drawings_.
Where representative drawing has been isolated for study in relation to
general intelligence, no results contradictory to the conclusions stated
above have been reported. Earlier investigators had declared that great
talent for graphic expression is closely connected with good
intellectual endowment in children, but that “the reverse of this does
not hold true.” This conclusion will probably be shown to be well
founded in future researches carried out by modern test methods. “Great
talent” includes much more than mere ability to “see and make” an
object. As Manuel says, “Before one gets very far in art expression, a
great number of supplementary factors must be brought to the support of
the ability to represent graphically simple objects. Even the technique
itself becomes progressively more difficult.... General intelligence
conditions the ability of drawers (_a_) to acquire the advanced
technique into which conceptual factors enter, and (_b_) to create
original drawings of merit.”
Manuel also gave tests of linguistic ability in the course of his study
and found no essential relationship between ability to draw and ability
to manage words. “Linguistic ability is no index of ability or lack of
ability in graphic representation,” but linguistic ability correlates
well with general intelligence (as has been previously emphasized in
this volume).
For purposes of educational and vocational guidance we now need
especially studies of the relationship between general intelligence and
kinds of drawing other than the representative. We require studies of
the extent to which copying, analytical drawing, symbolic drawing, and
caricature are correlated with general mental capacity. It may be
predicted with some confidence that research in unselected groups will
finally show copying and representative drawing to be slightly
correlated with general intelligence. Analytical and symbolic drawing
are probably significantly correlated with general intelligence, while
caricature is doubtless very closely correlated with intellectual
capacity.
We need also researches bearing upon the relationship between ability in
painting, sculpture, and pattern-cutting, and general intelligence. To
what extent are painters and sculptors of high repute also gifted with
superior intellectual acumen? Popular opinion would have it that the
“artistic mind” is antagonistic in its organization to the “scientific
mind.” Probably here as elsewhere uncontrolled speculation leads to
false conclusions. Probably those who achieve eminence in the arts are,
on the whole, as highly endowed with general intelligence as are those
who win eminence in other kinds of careers. Greatness in graphic
portrayal almost certainly results only when there is a rare combination
of highly specialized capacity for representative drawing, and very high
IQ, in the same individual.
Fortunately for all, modern life calls for all forms of talent in
drawing, in all degrees of combination with general intelligence. Sign
painters, copyists, designers, draughtsmen, architects, illustrators,
and creative interpreters of human faces and of human life are all
needed. Persons skilled in drawing are essential to mechanical and
industrial development in society, for everything made must first be
drawn, from the motor of an airplane to the fancy buttons on a child’s
coat.
V. THE COLOR-BLIND
Between 3 and 5 per cent of boys, and apparently fewer girls, inherit a
special defect of vision, called “color blindness.” A color-blind child
may be gifted in drawing, except in color drawing, but he will be
incompetent as a painter.
There are several forms of this special defect. Very rarely it may
happen that no discrimination among colors is possible, the world
appearing, as in a photograph, to consist only of light and shade. In
the late evening, or in any sufficient dimness, color is not perceived
by ordinary eyes. Those who are blind to all colors do not see color
with the brightening of the light, as ordinarily happens.
The most common form of color blindness is, however, that in which only
red-green sensations are absent, other colors being distinguishable.
There is no disease present in such cases. The defect is hereditary, and
consists in deviation from the typical in structure of the retina. The
eyes of color-blind persons are as healthy and normal as those of
others, in respect to functions other than acting as receptors for
certain waves of light.
A few cases of blue-yellow color blindness have been reported, these
resulting from pathological causes.
A color-blind child does not, of course, know from his own experience
that he is so. He supposes that everyone sees what he sees, until
informed by test or disaster of his deviation from the usual.
Color blindness seems to bear no relation to intelligence, so that in
drawing where color is used teachers will find a certain percentage of
generally very able children producing absurd results. A color-blind
child with a great gift for drawing, may succeed in etching or in black
and white work of various kinds, as has been shown by the actual rise to
eminence of etchers who are color-blind.
VI. ILLUSTRATIVE CASES
The facts which have been set forth in regard to ability in drawing will
be further illuminated by concrete cases. In Figure 19 we have
reproduced the psychograph of a child in the elementary school, E 1,
showing talent in representative drawing combined with very inferior
intelligence.
E 1 was a pupil in the sixth grade, at the time when this psychograph
was made. She was nearly 14 years old, and therefore distinctly retarded
in school status. In spite of her general incompetence, her drawing
teacher placed her near the top of her grade in native ability to draw.
The child is described as not original. “She can follow better than she
can originate.” “Apparently her talent for drawing is inherited. Her
father is a tailor. He enjoys drawing and lettering. Her mother takes
great interest in the children’s drawings, and an aunt has made
paintings of some interest. An older brother of E 1 is reported as very
good (original and true) in drawing. She has also two younger sisters
and a younger brother who are good in drawing.”
Figure 20 shows a copy of a man’s portrait, done by a 14-year-old boy,
of IQ near 70. This boy was incapable of normal progress through the
school curriculum. Being “left back” repeatedly, he became a truant and
otherwise delinquent. His ability for and interest in drawing are highly
specialized. Figure 21 shows drawings of movement (not copied) by the
same boy.
[Illustration:
FIG. 19.—Showing the psychograph of a stupid child, who has a special
ability in representative drawing. (From Manuel’s _A Study of Talent
in Drawing_. Reproduced by courtesy of The Public School Publishing
Company.)
]
The special ability in paper-cutting of a feeble-minded man, “Dick,” is
illustrated in Figure 22. At the time these silhouettes were cut, this
man was 28 years old, strong and healthy, with a mental level of 6 years
4 months, and IQ 39 (Stanford-Binet). He has been an inmate of an
institution for mental defectives for seventeen years, as his general
intelligence is insufficient for any kind of unsupervised career. He has
never been able to learn to read or write.
[Illustration:
FIG. 20.—Showing special ability in drawing, of a 14-year-old boy, of
IQ near 70. The portrait is a copy.
]
[Illustration:
FIG. 21.—Showing special ability in drawing of a 14-year-old boy, of
IQ near 70.
]
This man is greatly interested in animals, and after being taken to the
circus sometime ago, became a nuisance in his preoccupation with what he
had seen there. In cutting the silhouettes, he merely takes a sheet of
paper in one hand, a pair of scissors in the other, and cuts absolutely
“free-hand,” without reference to any preliminary patterning or
draughting, either from memory or from a model. The performance is
accompanied by many naïvely vain remarks, calling attention to his skill
and the quality of the product. He can also draw, as is shown in Figure
23. He has never had any special training so far as known.
For the sake of contrast, we have presented, in Figure 24, the attempts
of two university professors to cut an elephant from paper, as did
“Dick” in Figure 22. These two professors are both doctors of
philosophy, distinguished in their respective fields for research. Yet
they are greatly surpassed by “Dick” in ability to cut silhouettes.
VII. INHERITANCE OF TALENT IN DRAWING
A comprehensive study of the inheritance of talent in drawing is yet to
be made. Manuel took the family history of the pupils studied by him,
and found artistic ability of some kind among close relatives in almost
all cases. The gift showed itself in early childhood in these talented
persons, and there is every reason to believe that it was bestowed by
the conditions of near ancestry.
VIII. GENERAL SUMMARY
It is clear that talent for representative drawing arises from a happy
combination of a great many variable functions; and that this
combination may occur in persons of superior, average, or inferior
intelligence. Likewise, conspicuous lack of this talent is compatible
with intelligence of almost any degree. Therefore, many children
considered by their teachers of drawing to be pupils of ability, will be
rated as but mediocre, or as inferior, by other teachers. This will be
true especially to the extent that drawing as a subject of instruction
is limited to _representative drawing_.
[Illustration:
FIG. 22.—Showing the special ability to cut silhouettes, of a
feeble-minded man, inmate of an institution for mental defectives.
See also Figure 23.
]
[Illustration:
FIG. 23.—Charlie Chaplin pursuing a gentleman, and pursued by a
policeman. Showing the special ability to draw, of a feeble-minded
man, in an institution for mental defectives. See also Figure 22.
]
[Illustration:
FIG. 24.—Showing attempts by two distinguished university professors
to cut silhouettes of an elephant. Compare with Figure 22.
]
Since superior students of science may or may not have ability to draw,
it is probably undesirable that success in elementary courses should be
made to depend largely on drawing.
Distinguished achievement in analytical, symbolic, and interpretative
art is probably as incompatible with native stupidity as is
distinguished achievement in any other field of technical endeavor.
Persons who can draw, but are nevertheless generally dull, should
probably not be guided toward the career of designer, architect,
cartoonist, or portrait painter.
All persons possess in some amount each and every one of the capacities,
which in rare and happy combinations constitute talent in drawing. The
typical child possesses them in typical degrees, so that the majority
can draw moderately well. Since in after life most children will enjoy
the drawings of others more frequently than they will themselves draw,
probably it would be of value to devote a relatively greater part of the
curriculum in drawing to forming acquaintanceship with pictures.
Interest in drawing, painting, or sculpture may be present without
talent, but probably keen interest and talent are most often combined.
At present educational psychologists have before them the task of
extending research, so that the word “probably,” so often used in this
discussion, may be replaced by “certainly.” The accomplishment of this
task will call for the coöperation of artists, in particular.
REFERENCES
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psychologique_, 1908.
CHILDS, H. G.—“Measurement of the Drawing Ability of Two Thousand One
Hundred and Seventy-seven Children in Indiana School Systems by a
Supplemented Thorndike Scale”; _Journal of Educational Psychology_,
1915.
ELDERTON, E.—“On the Association of Drawing with Other Capacities in
School Children”; _Biometrika_, 1910.
FISCHLOVITZ, A.—_An Inductive Study of the Abilities Involved in
Drawing_; Columbia University, 1903.
JONES, E. E.—“The Correlation of Visual Memory and Perception of
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aptitudes”; _Archives de psychologie_, 1908.
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