Michlaude Discipleship Project

The Tidal Wave

A Note on Sources

The following citations support the factual claims in this book. Pastors and counselors who are asked to verify the research behind specific statements will find the key studies here. The notes follow chapter order where relevant.

Gray divorce doubled since 1990: Brown, Susan L., and I-Fen Lin. "The Gray Divorce Revolution: Rising Divorce Among Middle-Aged and Older Adults, 1990–2010." Journals of Gerontology: Social Sciences 67, no. 6 (2012): 731–741. See also Stepler, Renee. "Led by Baby Boomers, Divorce Rates Climb for America's 50+ Population." Pew Research Center, March 9, 2017. https://www.pewresearch.org/social-trends/2017/03/09/led-by-baby-boomers-divorce-rates-climb-for-americas-50-population. Accessed June 2026.

Pornography use roughly doubles divorce probability: Perry, Samuel L. "Pornography Use and Marital Separation: Evidence from Two-Wave Panel Data." Archives of Sexual Behavior 47, no. 6 (2018): 1869–1880. See also Perry, Samuel L., and Cyrus Schleifer. "Till Porn Do Us Part? A Longitudinal Examination of Pornography Use and Divorce." Journal of Sex Research 55, no. 3 (2018): 284–296.

Between a third and nine-tenths of mainstream pornographic content contains physical aggression: Fritz, Niki, Vinny Malic, Bryant Paul, and Yanyan Zhou. "A Descriptive Analysis of the Types, Targets, and Relative Frequency of Aggression in Mainstream Pornography." Archives of Sexual Behavior 49, no. 8 (2020): 3041–3053. The range reflects variation across studies; Bridges et al. (2010) found aggression in 88% of scenes in best-selling content.

Step-family content documented increase: The 178% figure is drawn from platform analytics reporting; exact figures vary by reporting period and methodology. The directional claim — that this category has grown substantially and rapidly — is well established across multiple reporting periods even where specific percentages differ.

Desensitization and qualitative escalation mechanisms: Ince, Campbell, et al. "Problematic Pornography Use and Novel Patterns of Escalating Use: A Cross-Sectional Network Analysis with Two Independent Samples." Addictive Behaviors 156 (2024): 108048. See also Zillmann, Dolf, and Jennings Bryant. "Shifting Preferences in Pornography Consumption." Communication Research 13, no. 4 (1986): 560–578.

Male pornography use negatively associated with both partners' sexual quality: Willoughby, Brian J., Jason S. Carroll, Dean M. Busby, and Cameron C. Brown. "Differences in Pornography Use Among Couples: Associations with Satisfaction, Stability, and Relationship Processes." Archives of Sexual Behavior 45, no. 1 (2016): 145–158.

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