otherwise. These are the *incoherent reactions*, that is to say,
reactions which are determined neither by the stimulus words, nor by
the agency of perseveration, nor by distraction.

Although the occurrence of incoherent reactions is hardly subject to
doubt, yet in no instance is it possible to establish with certainty
that a given reaction is of this type, for in no instance can a
remote, or an imagined, or a merely symbolic relationship between
stimulus and reaction be positively excluded. Some, indeed, would
assert that some such relationship must necessarily exist in every
instance, at least in the domain of the subconscious. This
circumstance necessitates the placing of this type of reactions in the
unclassified group.

In practice it may be found advisable in some cases to analyze the
unclassified reactions with a view to ascertaining to what extent each
of the various types is represented among them. But one here treads on
slippery ground, and one must be continually warned against the danger
of erroneous conclusions.



Sec. 5. ORDER OF PREFERENCE.


After having developed the classification here proposed we found that
there was still considerable room for difference of opinion in the
placing of many reactions, owing to the circumstance that in many
cases a reaction presents features which render it assignable under
any one of two or more headings. To leave the matter of preference in