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	Secularization Index Modeling	Religious Switching Analysis
Odbor	Sociology Of Religion	Sociology Of Religion
Rodina	Process / pipeline	Process / pipeline
Rok vzniku	2009	2014
Tvorca	Steve Bruce (theory); David Voas (cohort measurement)	Darren E. Sherkat; Pew Research Center
Typ	Measurement and cohort modeling of religious decline	Transition/retention analysis of religious affiliation change
Pôvodný zdroj	Voas, D. (2009). The Rise and Fall of Fuzzy Fidelity in Europe. European Sociological Review, 25(2), 155-168.	Sherkat, D. E. (2014). Changing Faith: The Dynamics and Consequences of Americans' Shifting Religious Identities. New York: New York University Press. ISBN: 9780814741276
Ďalšie názvy	Religious Decline Modeling, Secularization Measurement, Generational Religious Decline Model, Fuzzy Fidelity Modeling	Religious Mobility Analysis, Religious Retention Analysis, Denominational Switching Analysis, Faith Transition-Matrix Modeling
Príbuzné	3	3
Zhrnutie	Secularization index modeling measures the decline of religion in modern societies and models its dynamics across generations. It combines two tasks: building defensible indices of religiosity from survey items on belief, belonging, and practice, and decomposing observed change into age, period, and cohort components to determine whether religion is fading as individuals age, as eras shift, or as each successive birth cohort enters life less religious than the last. Steve Bruce's God is Dead (2002) restated the classic secularization thesis that modernization corrodes religious authority and participation, while David Voas's 2009 analysis of European data showed that decline is overwhelmingly a cohort phenomenon and introduced the idea of 'fuzzy fidelity' - a large middle that is neither firmly religious nor wholly secular - that swells and then shrinks as societies move through the secular transition.	Religious switching analysis studies how people move between religious traditions over their lives by comparing the religion they were raised in with the one they hold as adults. Its central tool is the origin-by-destination transition matrix, whose rows are childhood traditions and whose entries give the probability of ending up in each adult tradition; the diagonal gives retention, the off-diagonals give defection and recruitment, and summing across rows yields each group's net gains and losses. Darren Sherkat's Changing Faith (2014) used large national datasets to map the dynamics and consequences of Americans' shifting identities, and the Pew Research Center's 2015 religious-switching findings quantified how Catholicism and mainline Protestantism lose members while the religiously unaffiliated gain - making switching a primary engine of change in the American religious landscape.