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Most of the difficulties and sources of error encountered by the experimental investigator of the special sense psychology are attributed by the advocate of strictly objective investigation to the subjective coloring that both the investigator and the individual tested bring in. There is no doubt that this coloring can be a source of error; but if man is to study the psychology of his like, how is he to avoid it? The only way out seems to be the recognition of this factor and its proper consideration in evaluating experiments. In the present monograph, the author shows how one can, in such fashion. approach a strictly scientific investigation of the olfactory sense. With the thoroughness so typical of his numerous studies in the field of psychology, he presents all phases of the subject in a comparatively small monograph, yet contriving to preserve simplicity as well as clearness.
The work is
Psychologic Studies on the Olfactory Sense. Arch NeurPsych. 1927;17(1):145–147. doi:10.1001/archneurpsyc.1927.02200310152013
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