is found in the frequency tables; _floor_ is, therefore, classed
as an association to preceding reaction.

_beautiful--flowers_
_window--red_

_Window--red_ is an individual reaction; _red--flowers_ is
found in the frequency tables; therefore, _red_ is classed as an
association to preceding reaction.

In cases in which neither the reaction in question nor the preceding
reaction happens to be one of our stimulus words, but a relationship
between them may be judged to exist without considerable doubt, the
reaction in question is also classed here. Example:

_priest--father_
_ocean--mother_

_Ocean--mother_ is an individual reaction; neither the word
_father_ nor the word _mother_ is among our stimulus words;
but the association between the words _father_ and _mother_
may be judged to exist without considerable doubt; therefore, in this
case _mother_ is classed as an association to preceding reaction.

In such cases as this personal equation must necessarily come into
play; comparative uniformity of judgment may, however, be attained by
systematically excluding any reaction the relationship of which to the
preceding reaction is subject to any considerable doubt and by placing
any such reaction in the unclassified group.