Rachel Cassidy: all content

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Managing “Deep” Uncertainty in Global Health: The Case of TB Testing


Policymakers and clinicians in global health often face considerable uncertainty when making decisions. Statistical uncertainty—arising from the fact that analysis and modelling typically use samples rather than whole populations—can be accounted for by placing confidence intervals on the estimated impacts of different policies and treatment regimes.

7 November 2019

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Are the poor so present-biased?

Working Paper

While poverty may impair decision-making, some of the apparently irrational behaviour observed among the poor may have a rational expectation. In particular, estimates of "present-bias" among the poor may be exaggerated if poor individuals are credit-constrained and expect to have greater liquidity in future. I conduct an experiment in rural Pakistan which provides evidence of this effect.

17 October 2018

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How can we increase girls’ uptake of maths and physics A-level?


There is a large gender gap in the likelihood of taking maths and physics at A-level, even among high-achieving pupils. Among pupils who achieved grade A or A* (equivalent to grades 7-9) in GCSE maths in 2010, 36.5% of girls compared to 51.1% of boys took maths A-level. Among those who achieved grade A or A* in GCSE physics, just 13.2% of girls compared to 39.3% of boys took physics A-level. By contrast, there is almost no gender gap in the likelihood of taking chemistry A-level amongst those who score highly in the subject at GCSE, and girls are actually more likely to take biology A-level than boys.

22 August 2018

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Why don’t more girls study maths and physics?


Despite receiving 55% of A levels overall in 2018, girls received just 43% of A levels awarded in STEM subjects. Rachel Cassidy, Sarah Cattan and Claire Crawford explore what drives girls’ A level choices, including why they may or may not opt for maths or physics.

22 August 2018