Section 56. (e) Mnemotechnique.
Just a few words concerning mnemotechnique, mnemonic, and
anamnestic. The discovery of some means of helping the memory
has long been a human purpose. From Simonides of Chios, to the
Sophist Hippias of Elis, experiments have been made in artificial
development of the memory, and some have been remarkably
successful. Since the middle ages a large group of people have done
this. We still have the figures of the valid syllogisms in logic, like
Barbara, etc. The rules for remembering in the Latin grammar,
etc., may still be learned with advantage. The books of Kothe and
others, have, in their day, created not a little discussion.
As a rule, modern psychology pays a little attention to memory
devices. In a certain sense, nobody can avoid mnemonic, for whenever
you tie a knot in your handkerchief, or stick your watch into
your pocket upside down, you use a memory device. Again, whenever
you want to bear anything in mind you reduce difficulties and
bring some kind of order into what you are trying to retain.
Thus, some artificial grip on the object is applied by everybody,
and the utility and reliability of this grip determines the trustworthiness
of a man's memory. This fact may be important for the
criminal lawyer in two ways. On the one hand, it may help to clear
up misunderstandings when false mnemonic has been applied.
Thus, once somebody called an aniline dye, which is soluble in water
and is called "nigrosin," by the name "moorosin," and asked for it
under that name in the store. In order to aid his memory he had
associated it with the word for black man = niger = negro = moor,
and thus had substituted moor for nigro in the construction of the
word he wanted. Again, somebody asked for the "Duke Salm" or
the "Duke Schmier." The request was due to the fact that in the
Austrian dialect salve is pronounced like salary and the colloquial
for "salary" is "schmier" (to wipe). Dr. Ernst Lohsing tells me that
he was once informed that a Mr. Schnepfe had called on him, while,
as a matter of fact the gentleman's name was Wachtel. Such
misunderstandings, produced by false mnemonic, may easily occur
during the examination of witnesses. They are of profound significance.
If once you suspect that false memory has been in play,
you may arrive at the correct idea by using the proper synonyms
and by considering similarly-pronounced words. If attention is paid
to the determining conditions of the special case, success is almost
inevitable.
The second way in which false mnemotechnique is important is
that in which the technique was correct, but in which the key to the
system has been lost, i. e., the witness has forgotten how he proceeded.
Suppose, for example, that I need to recall the relation
of the ages of three people to each other. Now, if I observe that M
is the oldest, N the middle one, and O the youngest, I may suppose,
in order to help my memory, that their births followed in the same
order as their initials, M, N, O. Now suppose that at another time,
in another case I observe the same relation but find the order of the
initials reversed O N, M. If now, in the face of the facts, I stop
simply with this technique, I may later on substitute the two cases
for each other. Hence, when a witness says anything which appears
to have been difficult to remember, it is necessary to ask him how
he was able to remember it. If he assigns some aid to memory as the
reason, he must be required to explain it, and he must not be believed
unless it is found reliable. If the witness in the instance above, for
example, says, "I never make use of converse relations," then
his testimony will seem comparatively trustworthy. And it is not
difficult to judge the degree of reliability of any aid to memory
whatever.
Great liars are frequently characterized by their easy use of the
most complicated mnemotechnique. They know how much they
need it.