Heterogeneity in Callous-Unemotional Traits: Early Temperamental and Environmental Risk Factors in a High-Risk Sample - Kristin J. Perry; Jamie M. Ostrov; Stephanie T. Lanza; Amanda B. Nickerson; Pamela Schuetze; Stephanie A. Godleski; Rina D. Eiden (Clinical Psychological Science, 2026)