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Updated: Aug 14, 2026

Noninvasive, In-pen Approach Test for Laboratory-housed Pigs
Published on: June 5, 2019
[Did your household have a new "boss" between 1971 and 1981?]
Abstract:
"The number of women head of the household has more than doubled in Canada between 1971 and 1981. This paper investigates to what extent this increase may be imputed to changes in household structure (for instance, the rise in the number of lone-parent families) and to what extent it may be due to the introduction, in 1981, of a new concept to identify the person who is 'head' of the household.... The existence of wide interprovincial disparities leads to the hypothesis that the change of concept may have had a different impact according to the characteristics of the household, and of the spouses." (SUMMARY IN ENG AND SPA)
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