Alexandra Havdahl is senior research associate at the University of Bristol in the United Kingdom.
Alexandra Havdahl
Senior research associate
University of Bristol
From this contributor
Questions for Bishop, Havdahl: Tantrums trick autism tests
Children with low intelligence or behavioral issues — but not autism — may meet the criteria for autism on standard diagnostic tests.
Questions for Bishop, Havdahl: Tantrums trick autism tests
By
Ann Griswold
1 November 2016 | 5 min read
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Genetic profiles separate early, late autism diagnoses
Age at diagnosis reflects underlying differences in common genetic variants and developmental trajectories among people with autism.
Genetic profiles separate early, late autism diagnoses
Age at diagnosis reflects underlying differences in common genetic variants and developmental trajectories among people with autism.
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Natalia Mesa
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To persist, memories surf molecular waves from thalamus to cortex
During the later stages of learning, the mouse brain progressively activates transcriptional regulators that drive memory consolidation.
To persist, memories surf molecular waves from thalamus to cortex
During the later stages of learning, the mouse brain progressively activates transcriptional regulators that drive memory consolidation.
By
Claudia López Lloreda
26 November 2025 | 4 min read
Sex hormone boosts female rats’ sensitivity to unexpected rewards
During the high-estradiol stages of their estrus cycle, female rats learn faster than they do during other stages—and than male rats overall—thanks to a boost in their dopaminergic response to reward, a new study suggests.
Sex hormone boosts female rats’ sensitivity to unexpected rewards
During the high-estradiol stages of their estrus cycle, female rats learn faster than they do during other stages—and than male rats overall—thanks to a boost in their dopaminergic response to reward, a new study suggests.
By
Angie Voyles Askham
26 November 2025 | 5 min read