Analyses.
Incorporating these three societal factors (cultural collectivism, recent industrialization, population aging rate), we employed multiple-moderator meta-regression analysis, which partials out the unique variance of each predictor, controlling for the others. We ran three different multiple-moderator meta-regression models, each of which simultaneously tested the relative predictive value of recent spikes in population aging, and recent spikes in industrialization, and longstanding cultural values on attitudes toward the aged: (1)a 5-years prior model,comprising 5-year increase in aging, 5-year increase in industrialization, and cultural collectivism; (2) a 10-years prior model, comprising 10-year increase in aging, 10-year increase in industrialization, and cultural collectivism; and (3) a 20-years prior model, 20-year increase in aging, 20-year increase in industrialization,and cultural collectivism.