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Updated: Jun 23, 2026

Assessment of Stress Effects on Cognitive Flexibility using an Operant Strategy Shifting Paradigm
Published on: May 4, 2020
Effects of stress throughout the lifespan on the brain, behaviour and cognition
Sonia J Lupien1, Bruce S McEwen, Megan R Gunnar
1Université de Montréal, Mental Health Research Centre, Fernand Seguin Hôpital Louis-H Lafontaine, Quebec, Canada. sonia.lupien@umontreal.ca
Abstract:
Chronic exposure to stress hormones, whether it occurs during the prenatal period, infancy, childhood, adolescence, adulthood or aging, has an impact on brain structures involved in cognition and mental health. However, the specific effects on the brain, behaviour and cognition emerge as a function of the timing and the duration of the exposure, and some also depend on the interaction between gene effects and previous exposure to environmental adversity. Advances in animal and human studies have made it possible to synthesize these findings, and in this Review a model is developed to explain why different disorders emerge in individuals exposed to stress at different times in their lives.
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