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The nature-nurture issue is found in perceptual
development, just as it is in other dimensions of development.
In the area of perception, the issue can be traced to
the philosophers of the 17th and 18th centuries. Rene
Descartes and Immanuel Kant took the nativist view that
children are born with predispositions to perceive the
world in certain ways. Kant, for example, believed that
our innate makeup causes us to sense and organize the
objects of the world according to certain "categories."
We perceive some things and are oblivious to others
because of our inborn ways of organizing the world outside.
George Berkeley and John Locke took the empiricist
view that experience determines our ways of perceiving
the world. Locke, for example, argued that mental representations
reflect the impact of the world on the sense organs.
There is no particular inborn way of organizing sensations
of the world. The world, instead, impresses the mind
with its own stamp.
Today, few developmentalists subscribe to either
extreme. Most would agree that nature (the nativist
view) and nurture (the empiricist view) interact to
give shape to perceptual development.
Turnbulls classic observations of the BaMbuti
Pygmiesparticularly of a young man named Kengehave
implications for these views of perceptual development.
Although they are recorded in a psychology journal,
they also read like the writings of the anthropologist
who studies various cultures. As you read the article,
you will find many facts of interest to students of
psychology, such as those concerning size constancy
("distance and size perception") and those
involving names of colors.
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Some Observations Regarding the Experiences and Behavior
of the BaMbuti Pygmies
By COLIN M. TURNBULL
AMERICAN MUSEUM OF NATURAL HISTORY
The identity of the BaMbuti Pygmies of the Ituri Forest in
the Congo with the forest itself goes beyond their social
life; they are also psychologically conditioned by their environment.
This can best be illustrated by some observations that I made
during a recent field trip in their country.
Distance- and Size-Perception
At the end of a particularly long and tiring period of trekking
through the forest from one hunting group to another, I found
myself on the eastern edge, on a high hill which had been
cleared of trees by a missionary station. There was a distant
view over the last few miles of forest to the Ruwenzori Mountains:
in the middle of the Ituri Forest such views are seldom if
ever encountered. With me was a Pygmy youth, named Kenge,
who always accompanied me and served, amongst other capacities,
as a valid introduction to BaMbuti groups where I was not
known. Kenge was then about 22 yr. old, and had never before
seen a view such as this. He asked me what the "things"
before us were (referring to the mountains). "Were they
hills? Were they clouds? Just what were they?" I said
that they were hills bigger than any in his forest, and that
if he liked we would leave the forest and go and see them
and have a rest there. He was not too sure about this, but
the BaMbuti are an incorrigibly curious people and he finally
agreed. We drove by automobile in a violent thunderstorm which
did not clear until we entered the Ishango National Park at
the foot of the mountains and on the edge of Lake Edward.
Up to that moment from the time we had left the edge
of the forest, near Beni, visibility had been about 100 yd.
As we drove through the park the rain stopped and the sky
cleared, and that rare moment came when the Ruwenzori Mountains
were completely free of cloud and stood up in the late afternoon
sky, their snow-capped peaks shining in the sun. I stopped
the car and Kenge very unwillingly got out. His first remark
was to reiterate, what he had been saying ever since the rain
stopped and we could see around us, that this was a very bad
country, there were no trees. Then he looked up at the mountains
and was completely unable to express any ideasquite
possibly because his language had no suitable terms, being
limited to the experience of a strictly forest people. The
snow fascinated him, he thought it must be some kind of rock.
More important, however, was the next observation.
As we turned to get back in the car, Kenge looked over the
plains and down to where a herd of about a hundred buffalo
were grazing some miles away. He asked me what kind of insects
they were, and I told him they were buffalo, twice as big
as the forest buffalo known to him. He laughed loudly and
told me not to tell such stupid stories, and asked me again
what kind of insects they were. He then talked to himself,
for want of more intelligent company, and tried to liken the
buffalo to the various beetles and ants with which he was
familiar.
He was still doing this when we got into the car and drove
down to where the animals were grazing. He watched them getting
larger and larger, and though he was as courageous as any
Pygmy, he moved over and sat close to me and muttered that
it was witchcraft. (Witchcraft, incidentally, is known to
the BaMbuti only through association with the Bantu. They
have no similar concept of the supernormal.) Finally when
he realized that they were real buffalo he was no longer afraid,
but what puzzled him still was why they had been so small,
and whether they really had been small and had suddenly
grown larger, or whether it had been some kind of trickery.
As we came over the crest of the last low hill, Lake Edward
stretched out into the distance beyond, losing itself in a
hazy horizon. Kenge had never seen any expanse of water wider
than the Ituri river, a few hundred yards across. This was
another new experience difficult for him to comprehend. He
again had the same difficulty of believing that a fishing
boat a couple of miles out contained several human beings.
"But, its just a piece of wood," he protested.
I reminded him of the buffalo, and he nodded unbelievingly.
Later we went all over the National Park with one of the
African guides. He and Kenge conversed in KiNgwana, the lingua
franca of the area, and Kenge was constantly looking out
for animals and trying to guess at what they were. He was
no longer afraid or unbelieving; he was trying to adapt himself,
and succeeding, to a totally new environment and new experience.
The next day he asked to be taken back to the forest. He
reverted to his original argument. "This is bad country,
there are no trees."
The inability of the BaMbuti to correlate size-constancy
and distance had never even struck me as a possibility. In
the forest, vision is strictly limited to a matter of yards,
the greatest distance one can see, when up a tree looking
down onto a camp, being a hundred feet or more below. Kenge
was, however, a sophisticated and well travelled Pygmy. He
had been with me a long time, had travelled along roads where
he could see for as much as a quarter of a mile, and had seen
aircraft and knew that they contained people. Such instances,
however, were rare, and on the whole his experience of visual
distance was limited to the relatively slight diminution of
size in seeing a person or people walking along a road a quarter
of a mile away. He had seldom seen any animal from further
away than a few yards, he had never seen any boat bigger than
a dug-out canoe, and that no further away than a few hundred
feet.
Number-Perception
Size-perception is, however, only one of many phenomena of
interest to the psychologist. The Pygmy, unless he is one
who has constant dealings with the Bantu, is unable to count
above four. He has, however, such an eye for patterns that,
for example, if several arrows are taken from a bunch, he
can detect the reduction and can usually replace the correct
number withdrawn to bring the bunch to its original size.
In a gambling game (panda) common in the region, up
to 40 or so pebbles, seeds, or beans are thrown onto a mat.
In a single glance the Pygmy can tell you if they form a multiple
of four, or how manyone, two, or threehave to
be added to make it into such a multiple. The game is a test
of skill in number perception and manipulation. Spare beans
are concealed between the fingers and toes, and as a player
makes his throw, while the beans are still rolling on the
mat, he has already made his calculation and added the requisite
number from his concealed reserve to bring the total to the
winning multiple.
Art
(1) VISUAL
Another phenomenon worthy of study, and again associated
with environmental influence, is the almost total lack of
any form of physical art. The BaMbuti refer to white, black
and red by color names, for other colors they make comparisons"like
leaves," "like leopards," instead of "green"
or "yellow." They use red or blue-black dyes in
the crude decoration of their bark cloths, smearing the dye
on with their fingers. More complicated are the designs painted
on the bodies of the girls and women, using the black stain
obtained from the gardenia fruit. Except for these decorations,
visual art is lacking. Wooden implements are never carved
or decorated or even polished. Perhaps the world of the BaMbuti
is too close around him, too confined and colorless, too much
lacking in variety, to produce a visual art.
(2) AUDITORY
In contrast to this lack the Pygmy has the most complex music
in the whole of Africa. It is complex not only in terms of
rhythm, melody, and harmony (the latter surprising enough
in Africa), but also in terms of technique. The BaMbuti can
improvise a 15 part liturgy or canon, with melodies frequently
running in parallel seconds, and hold it without the slightest
difficulty. When this gets too tame, they divide the melodic
line up, note by note, among the performers, each of whom
will hoot his note at the appropriate moment. The melody then
travels counterclockwise around the group who may be sitting
about a central fire or even in the natural circle formed
by their huts, each at his own hearth. There is obvious material
here for anyone interested in esthetics, as well as for those
who might be more interested in the relatively small part
that vision plays in the life of these forest nomads. (Even
when hunting a great deal is done by hearing rather than seeing,
and perhaps even smell is more important as a sense. Vision
is used by the hunters in the examination of tracks, but the
firing of the arrow is often done by sound rather than sight.)
I should mention again that music permeates their whole life.
Historical Records
The earliest historical records of the BaMbuti, found in
a tomb dating from the sixth dynasty in Egypt, places this
tribe where it is today, refers to it as forest dwellers,
and indicates that song and dance played a great part in the
life of its people then just as it does today, over four thousand
years later. In the forest there are few forces that stimulate
change, and it is probable that the BaMbuti remained for most
of this time living much the same kind of life. As recently
as three or four hundred years ago, however, the great Bantu
migrations forced certain Bantu and Sudanic tribes into the
forest. For a number of highly significant reasons the resultant
contact has had relatively little effect on the life of the
BaMbuti, who consciously and forcefully reject the values
of the plains and savannah, and unite in common opposition
to the village world of the invaders.
It is a pity that such an exceptional opportunity for the
study of a truly primitive people should be missed. In a few
years the opportunity will be gone. There is little literature
of scientific value available on these people. The references
that I give here are those of the greatest interest, but even
so are for the most part of general rather than specific value.1
The work of Schebesta was undertaken a number of years ago,
and his later findings, as well as my own, indicate that particularly
with regard to his analysis of the Pygmy-Negro relationship
he was observing more from the point of view of the village
than of the forest. This was due to the fact that it was impossible
for him at that time to have access to the Ba-Mbuti except
through the offices of the local Negro chiefs. The presence
of the Negroes changed the situation, even when in the forest,
from a truly forest to a village environment, and the Pygmies
reacted accordingly.
True hunters, particularly those who are as heavily conditioned
by their environment as are the Ba-Mbuti, are rare. The fact
that they are surrounded by so many different cultures, yet
have managed to maintain their own cultural integrity is an
indication of the depth and vitality of their way of life
and thought, however simple and static it may seem on the
surface. If they lose their integrity in the next few years,
it will not be because of any process of acculturation, but
because the forest is no longer theirs and it will have been
physically impossible for them to maintain their forest way
of life. They are aware of the future that faces them, and
while some say, "We shall just have to live like the
savages and plant bananas," the majority say,
"When the forest is no more, we shall die." I am
afraid it will be the latter.
Notes
1Martin
Gusinde, Die Kongo Pygmäen in Geschichte and Gegenwart,
Acta Nova Leopoldina, 76, 1942; Urwaldmenschen am
Ituri, 1948; Die Twiden, Pygmäen und Pygmoida
im Tropischen Afrika, 1956, P. E. Joset, Buda Efeba, Zaïre,
1, 1948, 137157; Paul Schebesta, Among Congo Pygmies,
1933; My Pygmy and Negro Hosts, 1936; Revisiting
by Pygmy Hosts, 1937; Les Pygmé es du
Congo Belge, 1952; George Schweinfurth, The Heart of
Africa, 1874; C. T. Turnbull, Initiation among the BaMbuti
Pygmies of the Central Ituri, J. roy. Anthropol. Instit.,
87, 1957, 191216; Legends of the BaMbuti, ibid.,
89, 1959, 4560; Some recent developments in the sociology
of the BaMbuti Pygmies, Trans. N.Y. Acad. Sci., Ser.
II, 22, 1960, 275284; The elima. A pre-marital
festival among the BaMbuti Pygmies, Zaïre, 23,
1960, 175192; Field work among the BaMbuti Pygmies,
Man, 60, 1960; The Forest People, 1961.
Questions for Reflection and Discussion:
1. How can observations of Kenge be said to provide
evidence that nurture can play an important role in perceptual
development?
2. What kinds of experiences led Kenge to misperceive
the buffalo and the boat?
3. What are the implications of the BaMbuti methods
of referring to colors for the linguistic relativity hypothesis?
4. Do you notice any signs of condescension toward
the BaMbuti or toward other African groups on the part of
the author?
5. Many of Turnbulls observations are made on
the basis of his experiences with one person, Kenge. Do you
believe that he can generalize his observations to other Pygmies?
Why or why not?
Source
Turnbull, C. M. (1961). Some observations regarding the experiences
and behavior of the BaMbuti Pygmies. American Journal of
Psychology, 74, 304308. Copyright 1961 by the Board
of Trustees of the University of Illinois. Used with permission
of the University of Illinois.
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