Early parenting predicts hippocampal subregion volume via stress reactivity in childhood
Sarah L Blankenship1, Emma Chad-Friedman1, Tracy Riggins1
1Department of Psychology, University of Maryland, College Park, Maryland.
Insights
Negative parenting in early childhood is linked to heightened stress responses and smaller hippocampal volume later in childhood. This research highlights the hippocampus
Area of Science:
- Developmental psychology
- Neuroscience
- Stress research
Background:
- Parenting significantly influences child development, particularly stress response systems.
- Rodent studies suggest parenting programs the hypothalamic-pituitary-adrenal (HPA) axis and brain development.
Purpose of the Study:
- To investigate the longitudinal association between parenting, stress reactivity, and brain structure in children.
- To explore timing-dependent effects of parenting on HPA axis programming and hippocampal development.
Main Methods:
- Longitudinal study of 63 children assessed at ages 4 and 7.
- Parent-child interaction tasks and laboratory stressor with salivary cortisol collection.
- Structural magnetic resonance imaging (MRI) to assess hippocampal subregion volumes.
Main Results:
- Early negative parenting predicted increased cortisol reactivity at age 7.
- Increased cortisol reactivity at age 7 was associated with reduced left hippocampal tail volume.
- Associations between parenting, cortisol reactivity, and hippocampal volume were region- and timing-dependent.
Conclusions:
- The hippocampus is sensitive to early environmental influences, including parenting.
- Parenting experiences during early childhood can shape stress system programming and brain structure.
- Findings in humans parallel those observed in rodent models, supporting conserved mechanisms.
Abstract:
Rodent models indicate that parenting shapes offspring outcomes by programming the hypothalamic-pituitary-adrenal axis response to stress and, ultimately, altering brain structure and function. The present study tested this hypothesis and explored possible timing-dependent associations in a longitudinal sample of children (N = 63). At Time 1 (M = 4.23 ± 0.84 years) and Time 2 (M = 7.20 ± 0.89 years), children completed parent-child interaction tasks and a laboratory stressor after which salivary cortisol samples were collected. At Time 2, children also completed a structural MRI. Analyses revealed timing- and region-dependent associations between early and concurrent parenting and cortisol reactivity and hippocampal subregion volumes. Moreover, greater negative parenting during early childhood predicted greater cortisol reactivity three years later, which, in turn, led to reduced left hippocampal tail volume. Findings suggest that the hippocampus is sensitive to environmental influences during early childhood, a result that parallels findings from rodent models.
Related Concept Videos
00:55Parental Care
01:27Parenting Styles
Authoritarian Parenting
This style is strict and controlling, with little room for open dialogue. Authoritarian parents demand obedience and often enforce rules with minimal warmth. Children raised this way may lack social skills and initiative, usually comparing themselves to others unfavorably.
Authoritative...
01:28Relationship with Parents: Attachment
02:32Le Chatelier's Principle: Changing Volume (Pressure)
02:27Predicting Molecular Geometry
01:23Influence of Parents and Peers on Identity
Parental Influence on Identity Development
Parents serve as primary guides and managers in an adolescent's life, offering support instrumental in decision-making and personal growth....