'Baby brain' debunked: New study finds no cognitive decline in parents
A major new study has challenged the long-held belief in 'baby brain'—the idea that new parents experience cognitive decline. Published in the journal Cortex, the research found no measurable difference in cognitive performance between parents and non-parents. Despite this, the stereotype continues to shape perceptions, often labelling postpartum women as less capable at work and in daily life. The study tested over 12 cognitive domains, including memory, attention, and problem-solving. Across all areas, researchers detected no objective decline in parents compared to those without children. This held true from birth up to 24 months postpartum.
Around 80 per cent of mothers report memory lapses or mental fog in the early months after childbirth. Yet the study suggests these feelings may stem more from poor sleep than from parenthood itself. Sleep disruption, common among new parents, appeared to play a key role in perceived cognitive struggles. Interestingly, fathers reported the same subjective experience of 'baby brain' as mothers. The expectation of mental decline might also influence how parents interpret everyday forgetfulness. Meanwhile, male non-parents rated their own memory significantly higher than any other group, including new fathers.
The findings challenge a widely accepted stereotype that often affects postpartum women in workplaces and society. While sleep quality may explain some perceived cognitive issues, the study confirms no actual decline in parental brain function. This could reshape how employers, policymakers, and families view the capabilities of new parents.
