Page:Margaret Mead - Coming of age in Samoa; a psychological study of primitive youth for western civilisation.pdf/300

 Peoples has exhausted the possibilities of an investigation based upon the merely external observations of the ethnologist who is giving a standardised description of a primitive culture. We have a huge mass of general descriptive material without the detailed observations and the individual cases in the light of which it would be possible to interpret it.

The writer therefore chose to work in one small locality, in a group numbering only six hundred people, and spend six months accumulating an intimate and detailed knowledge of all the adolescent girls in this community. As there were only sixty-eight girls between the ages of nine and twenty, quantitative statements are practically valueless for obvious reasons: the probable error of the group is too large; the age classes are too small, etc. The only point at which quantitative statements can have any relevance is in regard to the variability within the group, as the smaller the variability within the sample, the greater the general validity of the results.

Furthermore, the type of data which we needed is not of the sort which lends itself readily to quantitative treatment. The reaction of the girl to her stepmother, to relatives acting as foster parents, to her younger sister, or to her older brother,—these are incommensurable in quantitative terms. As the physician and the psychiatrist have found it necessary to describe each case separately and to use their cases as illumination of a thesis rather than as irrefutable proof such as it is possible to adduce in the physical sciences, so the student of the more intangible and psychological aspects of human behaviour is forced to illuminate rather than demonstrate a thesis. The composition of the background against which the girl acts can be described in accurate and general terms, but her reactions are a function of her own personality and cannot be described without reference to it. The generalisations are based upon a careful and detailed observation of a small group of sub-