America Cohabitation Digital turn Europe Kristin A. Kirschbaum Patricia O. Covarrubias Population-based threshold models Single parent United States bic Book Industry Communication::H Humanities::HR Religion & beliefs::HRA Religion: general::HRAC Comparative religion bic Book Industry Communication::J Society & social sciences::JF Society & culture: general bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFD Media studies bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFS Social groups::JFSR Religious groups: social & cultural aspects::JFSR1 Jewish studies bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFS Social groups::JFSR Religious groups: social & cultural aspects::JFSR2 Islamic studies communication studies communication theory digitization economic inequality family familystructure germination time course hydrothermal time hydrotime inequeality intercultural communication materiality of sacred texts relationships seed aging seed dormancy seed priming