Jamie Hanson
jamielarsh.bsky.social
Jamie Hanson
@jamielarsh.bsky.social
Psychology & Neuroscience Researcher at Pitt & LRDC | Studying the Impact of Early Life #Adversity on 🧠 Development | #Stress | Reposts ≠Endorsements
And... Early identification of youth with persistently low positive affect could enable targeted interventions focused on enhancing positive emotional experiences-- before depressive symptoms fully emerge.

Full paper (open access): acamh.onlinelibrary.wiley.com/doi/10.1111/... 5/5
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January 15, 2026 at 2:50 PM
Notably-- Persistently LOW positive affect specifically mediated the link between adversity → internalizing symptoms (depression/anxiety), but NOT externalizing problems.

This suggests distinct mechanistic pathways rather than general psychopathology risk. 4/5
January 15, 2026 at 2:50 PM
The stark reality...

As early life adversity increases, probability of staying in the High-Stable group drops from ~25% to just 4-8.5%. Meanwhile, Declining trajectory membership rises to 65-70% at highest adversity levels. 3/5
January 15, 2026 at 2:50 PM
Using person-centered trajectory modeling in 7,457 youth from the ABCD-study, we identified:

High-Stable (28%)
Declining (25%)
Persistently Low (24%)
Volatile (23%)

Rather than assuming everyone responds the same way to adversity, we let the data reveal natural subgroups. 2/5
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January 15, 2026 at 2:50 PM