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THE

STORY OF THE MIND



BY

JAMES MARK BALDWIN



_WITH ILLUSTRATIONS_




NEW YORK

D. APPLETON AND COMPANY

1905



COPYRIGHT, 1898, 1902,

BY D. APPLETON AND COMPANY.

* * * * *




PREFACE.


In this little book I have endeavoured to maintain the simplicity
which is the ideal of this series. It is more difficult, however, to
be simple in a topic which, even in its illustrations, demands of the
reader more or less facility in the exploration of his own mind. I am
persuaded that the attempt to make the matter of psychology more
elementary than is here done, would only result in making it untrue
and so in defeating its own object.

In preparing the book I have secured the right and welcomed the
opportunity to include certain more popular passages from earlier
books and articles. It is necessary to say this, for some people are
loath to see a man repeat himself. When one has once said a thing,
however, about as well as he can say it, there is no good reason that
he should be forced into the pretence of saying something different
simply to avoid using the same form of words a second time. The
question, of course, is as to whether he should not then resign
himself to keeping still, and letting others do the further speaking.
There is much to be said for such a course. But if one have the right
to print more severe and difficult things, and think he really has
something to say which would instruct the larger audience, it would
seem only fair to allow him to speak in the simpler way also, even
though all that he says may not have the merit of escaping the charge
of infringing his own copyrights!

I am indebted to the proprietors of the following magazines for the
use of such passages: The Popular Science Monthly, The Century
Magazine, The Inland Educator; and with them I also wish to thank The
Macmillan Company and the owners of Appletons' Universal Cyclopædia.

As to the scope and contents of the Story, I have aimed to include
enough statement of methods and results in each of the great
departments of psychological research to give the reader an
intelligent idea of what is being done, and to whet his appetite for
more detailed information. In the choice of materials I have relied
frankly on my own experience and in debatable matters given my own
opinions. This gives greater reality to the several topics, besides
making it possible, by this general statement, at once to acknowledge
it, and also to avoid discussion and citation of authorities in the
text. At the same time, in the exposition of general principles I have
endeavoured to keep well within the accepted truth and terminology of
psychology.

It will be remarked that in several passages the evolution theory is
adopted in its application to the mind. While this great theory can
not be discussed in these pages, yet I may say that, in my opinion,
the evidence in favour of it is about the same, and about as strong,
as in biology, where it is now made a presupposition of scientific
explanation. So far from being unwelcome, I find it in psychology no
less than in biology a great gain, both from the point of view of
scientific knowledge and from that of philosophical theory. Every
great law that is added to our store adds also to our conviction that
the universe is run through with Mind. Even so-called Chance, which
used to be the "bogie" behind Natural Selection, has now been found to
illustrate--in the law of Probabilities--the absence of Chance. As
Professor Pearson has said: "We recognise that our conception of
Chance is now utterly different from that of yore.... What we are to
understand by a chance distribution is one in accordance with law, and
one the nature of which can, for all practical purposes, be closely
predicted." If the universe be pregnant with purpose, as we all wish
to believe, why should not this purpose work itself out by an
evolution process under law?--and if under law, why not the law of
Probabilities? We who have our lives insured provide for our children
through our knowledge and use of this law; and our plans for their
welfare, in most of the affairs of life, are based upon the
recognition of it. Who will deny to the Great Purpose a similar
resource in producing the universe and in providing for us all?

I add in a concluding section on Literature some references to various
books in English, classified under the headings of the chapters of the
text. These works will further enlighten the reader, and, if he
persevere, possibly make a psychologist of him.

J. MARK BALDWIN.

PRINCETON, _April, 1898_.

* * * * *




CONTENTS.


CHAPTER

I. THE SCIENCE OF THE MIND--PSYCHOLOGY

II. WHAT OUR MINDS HAVE IN COMMON--INTROSPECTIVE PSYCHOLOGY

III. THE MIND OF THE ANIMAL--COMPARATIVE PSYCHOLOGY

IV. THE MIND OF THE CHILD--CHILD PSYCHOLOGY

V. THE CONNECTION OF BODY WITH MIND--PHYSIOLOGICAL PSYCHOLOGY--MENTAL
DISEASES

VI. HOW WE EXPERIMENT ON THE MIND--EXPERIMENTAL PSYCHOLOGY

VII. SUGGESTION AND HYPNOTISM

VIII. THE TRAINING OF THE MIND--EDUCATIONAL PSYCHOLOGY

IX. THE INDIVIDUAL MIND AND SOCIETY--SOCIAL PSYCHOLOGY

X. THE GENIUS AND HIS ENVIRONMENT

XI. LITERATURE

* * * * *




LIST OF DIAGRAMS.


FIGURE

1. Origin of instinct by organic selection

2. Reflex and voluntary circuits

3. Outer surface of the left hemisphere of the brain

4. Inner surface or the right hemisphere of the brain

5. The speech zone (after Collins)

6. Mouth-key

7. Apparatus for optical experiment

8. Memory curves

* * * * *




THE STORY OF THE MIND

CHAPTER I.

THE SCIENCE OF THE MIND--PSYCHOLOGY,


Psychology is the science of the mind. It aims to find out all about
the mind--the whole story--just as the other sciences aim to find out
all about the subjects of which they treat--astronomy, of the stars;
geology, of the earth; physiology, of the body. And when we wish to
trace out the story of the mind, as psychology has done it, we find
that there are certain general truths with which we should first
acquaint ourselves; truths which the science has been a very long time
finding out, but which we can now realize without a great deal of
explanation. These general truths, we may say, are preliminary to the
story itself; they deal rather with the need of defining, first of
all, the subject or topic of which the story is to be told.

1. The first such truth is that the mind is not the possession of man
alone. Other creatures have minds. Psychology no longer confines
itself, as it formerly did, to the human soul, denying to the animals
a place in this highest of all the sciences. It finds itself unable to
require any test or evidence of the presence of mind which the animals
do not meet, nor does it find any place at which the story of the mind
can begin higher up than the very beginnings of life. For as soon as
we ask, "How much mind is necessary to start with?" we have to answer,
"Any mind at all"; and all the animals are possessed of some of the
actions which we associate with mind. Of course, the ascertainment of
the truth of this belongs--as the ascertainment of all the truths of
nature belongs--to scientific investigation itself. It is the
scientific man's rule not to assume anything except as he finds facts
to support the assumption. So we find a great department of psychology
devoted to just this question--i.e., of tracing mind in the animals
and in the child, and noting the stages of what is called its
"evolution" in the ascending scale of animal life, and its
"development" in the rapid growth which every child goes through in
the nursery. This gives us two chapters of the story of the mind.
Together they are called "Genetic Psychology," having two divisions,
"Animal or Comparative Psychology" and "Child Psychology."

2. Another general truth to note at the outset is this: that we are
able to get real knowledge about the mind. This may seem at first
sight a useless question to raise, seeing that our minds are, in the
thought of many, about the only things we are really sure of. But that
sort of sureness is not what science seeks. Every science requires
some means of investigation, some method of procedure, which is more
exact than the mere say-so of common sense; and which can be used over
and again by different investigators and under different conditions.
This gives a high degree of verification and control to the results
once obtained. The chemist has his acids, and reagents, and blowpipes,
etc.; they constitute his instruments, and by using them, under
certain constant rules, he keeps to a consistent method. So with the
physiologist; he has his microscope, his staining fluids, his means of
stimulating the tissues of the body, etc. The physicist also makes
much of his lenses, and membranes, and electrical batteries, and X-ray
apparatus. In like manner it is necessary that the psychologist should
have a recognised way of investigating the mind, which he can lay
before anybody saying: "There, you see my results, you can get them
for yourself by the same method that I used."

In fulfilling this requirement the psychologist resorts to two methods
of procedure. He is able to investigate the mind in two ways, which
are of such general application that anybody of sufficient training to
make scientific observations at all can repeat them and so confirm the
results. One of these is what is called Introspection. It consists in
taking note of one's own mind, as all sorts of changes are produced in
it, such as emotions, memories, associations of events now gone, etc.,
and describing everything that takes place.