Podcast:Quantitude Published On: Tue Apr 21 2026 Description: In this week's episode Greg and Patrick follow-up their previous discussion of time-varying covariates with a conversation about methods for modeling the simultaneous development in two or more constructs over time. Along the way, they also discuss back tattoos, right lane closures, 49.5 lb luggage, Clear, the United lounge, Sharpies, Neo, the Urfdedurfdedingerdonger, living with mommy or daddy, Hairballs of Science, selfish bastards, Lick‘em Señor, phantom variable road trip, The Trouble with Tribbles, achieving our ideal rank, and apologies to the Dutch.Stay in contact with Quantitude!Web page: quantitudepod.orgTwitterX: @quantitudepodYouTube: @quantitudepodMerch: redbubble.com