Analysis of information sources in references of the Wikipedia article "Sibling" in English language version.
These [calculations] will enable us... to predict the probable character in any individual from a knowledge of one or more parents or brethren ("siblings," = brothers or sisters).
These [calculations] will enable us... to predict the probable character in any individual from a knowledge of one or more parents or brethren ("siblings," = brothers or sisters).
{{cite journal}}: CS1 maint: multiple names: authors list (link)These [calculations] will enable us... to predict the probable character in any individual from a knowledge of one or more parents or brethren ("siblings," = brothers or sisters).
{{cite journal}}: CS1 maint: multiple names: authors list (link){{cite journal}}: CS1 maint: multiple names: authors list (link){{cite journal}}: CS1 maint: multiple names: authors list (link)The primary word under consideration in this chapter is sibling, which during the Old English period referred simply to a relation, not necessarily to a brother or sister, as in the modern use of the term. The last recorded use in the Oxford English Dictionary in the relative sense is in 1425. There are no records at all of the word for the next 500 years, although its derivational base sib remained in use throughout those years. It was in fact the term sib which, when employed specifically in the fields of anthropology and genetics, gave rise to the readoption of sibling. Sibling, in the narrower modern sense of describing the relationship between two people sharing a common parent, filled a semantic gap in the English lexicon, as there previously was no term to describe the fraternal relationship that did not specify gender. It is clear from early uses of sibling in the 20th century that the writer did not expect the reader to be familiar with the word, as the translator's note from a German eugenics book, Human Heredity explains, 'The word "sib" or "sibling" is coming into use in genetics in the English-speaking world, as an equivalent of the convenient German term "Geschwister" and as a general name for all children born of the same parents, that is to say, to denote brothers and sisters without distinction of sex.' (Baur 1931: 508 in sibling, OED). Likewise, an article in the journal Biometrika from 1903 contains the clarification, '"siblings"=brothers or sisters,' when employing the term. Thus we observe an interesting phenomenon of a native English word being reintroduced to native English speakers, who clearly have no knowledge of it.