Bauhaus-Universität Weimar

Titel:
Experimental Psychology: A Manual of Laboratory Practice, Vol. I: Qualitative Experiments, part 2: Instructor's Manual
Person:
Titchener, Edward B.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit11938/122/
88 
Cutaneoics Sensation 
Specimen of Results. — Fig. 7 shows two ‘ cold ’ maps, taken 
from a wholly unpractised but attentive O, at an interval of a 
week. Four degrees of cold are 
here recorded : 4, very intensely 
cold ; 3, strongly cold ; 2, mod¬ 
erately cold ; i, weakly or just 
barely cold. It will be seen that 
only in one case is there any 
material discrepancy between 
the introspections. It is, how¬ 
ever, better to reduce the four 
degrees to three. 
Fig. 8 is a final ‘cold’ map. 
The black areas are those of very intense cold ; the lined areas 
those of strong cold ; the dotted areas those of moderate cold ; 
and the white areas those of weak or 
just noticeable coolness. The value of 
such a map depends, of course, upon 
the constancy with which the areas 
reappear in subsequent tests. For an 
attentive and honest O, this constancy 
is practically absolute. 
Questions. — O (1) It is a general 
rule that the introspection of sensation 
intensities is more difficult than that 
of sensation qualities. The former is a 
comparative or relative introspection : 
the intensity is always a ‘stronger’ or 
a ‘ weaker ’ ; the latter is an absolute 
introspection : a quality is a ‘ this ’ or 
a ‘that.’ In accordance with this rule, 
the present experiment should be the 
more difficult. More especially would this be the case, if O had 
found the differences within the stimulus circle referred to in 
Question (3). 
On the other hand, the degrees of intensity, introspection of 
which is here called for, are so chosen as to render the introspec¬ 
tion as easy as possible. Moreover, the student is not accus- 
Fig. 8. — P, peripheral; C, 
central; U, ulnar; A\ ra¬ 
dial.
        

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