Rearing behavior, not genetic sequence, determines adult anxiety in rat pups
Evidence
The answer was unambiguous. The behavior of the rearing mother determined everything. Pups born to low-lickers but raised by high-lickers became calm, exploratory, resilient. Pups born to high-lickers but raised by low-lickers became anxious, reactive, fearful. The inheritance was not in the DNA. It was in the touch. — , The Rod and the Child, 6777
Categorization
- XREF: Connects to paternal/epigenetic transmission claims the book will build toward in later episodes; also to Meaney/Weaver cross-fostering as a classic developmental biology experiment. — connects to: The presence of the mother buffers HPA axis responses to stress in infant monkeys, with long-term effects on brain circuits involved in emotional regulation. — Social Buffering of Stress Responses in Nonhuman Primates: Maternal Regulation of the Development of Emotional Regulatory Brain Circuits; Repeated early stress amplifies rather than dulls the stress-response system — , The Rod and the Child: A Global History…, 5780; Harsh parenting below abuse thresholds amplifies infant cortisol responses rather than dampening them — , The Rod and the Child: A Global History…, 10173 (+4 more)
- SEED: Angle: the cross-fostering experiment as the cleanest demonstration that nurture can override nature — a concrete exemplar of the ‘inheritance is in the touch’ principle for a general audience.
Related
- Harsh parenting below abuse thresholds amplifies infant cortisol responses rather than dampening them (similarity 0.84)
- Repeated early stress amplifies rather than dulls the stress-response system (similarity 0.83)
- Responsive caregiving is the biological baseline for an infant’s stress system. (similarity 0.83)
- Brief stress followed by caregiver comfort does not harm children’s biology (similarity 0.81)
- An infant’s HPA axis is co-regulated by caregiver presence, not just internally. (similarity 0.79)
Broader Connections
- Responsive caregiving is the biological baseline for an infant’s stress system.
#corroborates(0.70) — , The Rod and the Child, 9707 - Harsh parenting below abuse thresholds amplifies infant cortisol responses rather than dampening them
#corroborates(0.60) — , The Rod and the Child, 10173 - Repeated early stress amplifies rather than dulls the stress-response system
#contradicts(0.55) — , The Rod and the Child, 5780 - Brief stress followed by caregiver comfort does not harm children’s biology
#complicates(0.50) — , The Rod and the Child, 5769 - MAOA gene variants moderate how childhood maltreatment affects antisocial behavior
#complicates(0.50) — , The Rod and the Child, 8499