“…Even though Mesman et al agree with Keller and others that warmth and sensitive responsiveness are separate constructs (Keller, Lohaus, V€ olker, Elben, & Ball, 2003), warmth is still considered an important aspect of this type of care. Warmth is included in the definition of sensitive responsiveness in seven of the eight most used observational instruments of parental sensitivity (Mesman & Emmen, 2013), and affection is a prominent dimension of maternal sensitivity in the Maternal Behavior Q-sort (Pederson & Moran, 1995), which is still being used (e.g., Zreik, Oppenheim, & Sagi-Schwartz, 2017). When we consider whether warmth is a universal characteristic of caregivers, we conclude that it is not.…”