Allmänna seminarieserien i psykologi, med Nicholas Judd

Seminarium

Datum: onsdag 3 december 2025

Tid: 13.00 – 14.00

Plats: Seminarierum Tranbär

Nicholas Judd, PhD, Psykologiska institutionen, talar om "The effect of wildfire smoke exposure on adolescent development".

Nicholas Judd, porträtt.
Nicholas Judd. Foto: Mikael Wallerstedt/SCAS

Seminariet äger rum onsdag den 3 december 2025, kl. 13.00–14.00.

Plats: Seminarierum Tranbär, Hus 4, plan 3, Albano.

Språk: Engelska

 

 

Sammanfattning (på engelska)

A major public health concern is the adverse effects of air pollution. Fundamental research suggests a mechanistic link between greater pollution (e.g., PM2.5) and adverse health effects.

However, most population-level research has used neighborhood pollution indicators. These are problematic, as they are heavily confounded with a myriad of other socioeconomic and individual-level characteristics – making it near impossible to isolate pollutions causal impact. Here, we leverage a unique source of air pollution to better estimate the true impact of air pollution: Wildfires. 

We construct wildfire smoke exposure measures (cumulative perinatal and childhood) for 9806 children in the Adolescent Brain Development Consortium (ABCD). Using confirmatory factor analysis we make a measure of cognitive performance from 4 tasks across four waves of ABCD (ages 10, 12, 14, 16). For our structural neural measures, we test both global (mean cortical thickness and total surface area) and regional areas defined by the Desikan-Killiany cortical atlas.

Crucially, our aim is to determine how prior smoke exposure impacts developmental trajectories (i.e., slopes) therefore, we use linear mixed effects modeling. Childhood smoke exposure showed broad effects on cognitive and neural developmental trajectories. These effects survive a series of robustness tests, yet we find no effect from perinatal exposure. Our results signify a step towards separating air pollution from socioeconomic factors.

Avdelningen för psykobiologi och epidemiologi ansvarar för dagens seminarium, kontaktperson är Håkan Fischer.

 


Om Allmänna seminarieserien

Institutionens forskningsavdelningar samarbetar i Allmänna seminarieserien, där lokala, nationella och internationella forskare inbjuds att tala om aktuella forskningsämnen. Seminarierna äger rum onsdagar kl. 14–15 i Albano om annat ej anges, med eller utan stöd av Zoom. Extraseminarier kan förekomma på andra dagar och tider, bland annat halvtidsseminarier i forskarutbildningen.

 


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