English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A partir da Teoria do Investimento Parental prevê-se diminuição no investimento com a diminuição da relação benefício/custos. Investigou-se a variação no investimento materno em função de variáveis socioambientais que podem apresentar impacto na relação benefício/custo do investimento materno. Os fatores investigados apresentaram, de forma geral, efeito sobre o investimento materno no sentido esperado de acordo com a teoria: quanto maiores os custos representados pela ausência de coabitação com pai, pouca disponibilidade de renda e início precoce da vida reprodutiva, menor o investimento materno. Conclui-se que os fatores socioambientais podem promover ou inibir o investimento materno indicando a importância de políticas públicas no sentido da promoção da estabilidade destes fatores. The Theory of Parental Investment predicts a decrement in parental investment as the benefit/cost ratio decreases. Differences in maternal investment were investigated in relation to socio-environmental variables that may have an impact on the benefit/cost ratio. The factors investigated showed, in general, effects on maternal investment in the expected direction according to the theory: as costs increased, represented by the absence of cohabitation with the father, diminished income and early reproductive age, lower levels of investment were observed. It is concluded that socio-environmental factors may promote or inhibit maternal investment, indicating the importance of public policies in promoting the stability of these variables

Diferenças no investimento materno em função de variáveis socioambientais