From the past to the future: The influence of early social deprivation on learning and behavioral development through programming.
Level 5 - mechanism / opinion, no new human data
Systematic review of animal (rodent) models combined with a narrative review of human literature.
PubMed 40945565 · doi:10.1016/j.brainres.2025.149924
What was done
The authors investigated the effects of early social deprivation during childhood and adolescence on learning, language, and social skills through a two-part design: a systematic review of rodent models (identifying 12,378 records and including 55 studies) and a narrative review of clinical human studies.
What was found
The abstract reports no numerical values, effect sizes, or statistical metrics. It describes qualitative findings where rodent maternal deprivation impaired spatial learning, discrimination, and prosocial behaviors while increasing anxiety-like behavior and aggression, effects heightened by littermate isolation and cross-generational transmission. Clinical studies reported impaired cognitive development, language acquisition delays, and disrupted social functioning, with some mitigation from stable caregiving and social reintegration.
Why it matters
It links rodent translational models with human observational findings to map how early social environments program long-term neurocognitive and behavioral trajectories.
Limits
No quantitative effect estimates or meta-analyses are provided. The human portion is an unsystematic narrative overview without documented sample sizes or search methods. Extrapolations from rodent maternal separation models carry inherent indirectness to human clinical pathology.
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