After becoming consistently more egalitarian for more than two decades, gender role attitudes in the General Social Survey have changed little since the mid-1990s. This plateau mirrors other gender trends, suggesting a fundamental alteration in the momentum toward gender equality. While cohort replacement can explain about half of the increasing egalitarianism between 1974 and 1994, the changes since the mid-1990s are not well accounted for by cohort differences. Nor is the post-1994 stagnation explained by structural or broad ideological changes in American society. The recent lack of change in gender attitudes is more likely the consequence of the rise of a new cultural frame, an "egalitarian essentialism" that blends aspects of feminist equality and traditional motherhood roles.

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The authors investigated whether trends in attitudes about gender were consistent with the gender stall primarily occurring in the family domain and examined potential mechanisms associated with changing gender norms. Using data from Monitoring the Future surveys (1976Future surveys ( -2015

Dictyostelium cells express a G-protein-coupled adenylyl cyclase, ACA, during aggregation and an atypical adenylyl cyclase, ACG, in mature spores. The ACG gene was disrupted by homologous recombination. acg- cells developed into normal fruiting bodies with viable spores, but spore germination was no longer inhibited by high osmolarity, a fairly universal constraint for spore and seed germination. ACG activity, measured in aca-/ACG cells, was strongly stimulated by high osmolarity with optimal stimulation occurring at 200 milliosmolar. RdeC mutants, which display unrestrained protein kinase A (PKA) activity and a cell line, which overexpresses PKA under a prespore specific promoter, germinate very poorly, both at high and low osmolarity. These data indicate that ACG is an osmosensor controlling spore germination through activation of protein kinase A.