Latest news and research
Explore our cost-effectiveness analysis of NEPI's innovative programme combining cash transfers and CBT to reduce crime in Liberia. With strong RCT evidence showing significant benefits to both recipients and the wider community, we estimate 22 WELLBYs per $1,000 donated. Read the report to learn how this promising intervention improves wellbeing and reduces criminality over the long term.
The experiences we have as young children are widely recognized as having lasting impacts in later life. Supporting parents to engage with their children shows clear short-term developmental benefits and may have profound long-term effects on wellbeing, as well as health and achievement later in life.
This report evaluates icddr,b's Reach Up parenting programme. Download and read the report to explore the Happier Lives Institute’s cost-effectiveness analysis, measuring the programme’s impact on long-term wellbeing in WELLBYs.
There can be toxic levels of lead in all sorts of surprising products, including cosmetics. Lead exposure causes a global health burden comparable to malaria and HIV but receives less than 0.1% of their funding - even though malaria and HIV are themselves neglected diseases. Reducing lead exposure also seems feasible, given the strong historical success of advocacy campaigns. We evaluate Pure Earth’s program to reduce lead in cosmetics in Ghana, involving two years of advocacy and data collection followed by three years of enforcement support for a lead ban. We estimate it delivers 108 WELLBYs per $1,000 donated ($9.23 per WELLBY), making it the most cost-effective charity we have reviewed to-date. Optimistic assumptions increase this as high as 1,359 WELLBYs per $1,000 ($0.74 per WELLBY).
Mental health disorders like depression and anxiety are common and significantly impact wellbeing, yet mental healthcare remains underfunded in low-income countries. Psychotherapy is an effective treatment that can be delivered cheaply by lay counsellors. This in-depth report evaluates the cost-effectiveness of two charities providing such therapy in Africa: Friendship Bench and StrongMinds. We estimate that Friendship Bench has a cost-effectiveness of 49 WELLBYs per $1,000 donated ($21 per WELLBY), and StrongMinds has a cost-effectiveness of 40 WELLBYs per $1,000 ($25 per WELLBY). Our results show that both charities are 5-6 times more cost-effective than cash transfers at improving subjective wellbeing. This is the fourth iteration of our analysis, which includes new data and refined methods. Our results are similar to the last version of the report, and we conclude that these two organisations are the most cost-effective charities (which are also well-evidenced) we have evaluated to date.
Globally, 45 million children suffer from malnutrition, leading to 2.3 million child deaths
annually. But even for those who live, the experience of malnutrition can have lifelong impacts on physical and cognitive health and social-emotional development. There is a consensus on how best to address extreme malnutrition: feeding kids a standard
formula of peanut butter enhanced with vitamins and nutrients alongside basic medical care to prevent or treat infections. This intervention, known as community management of acute malnutrition (CMAM), saves lives and improves health and development. What this report seeks to find out is how effective it is at also improving happiness.
Iron deficiency may be a major contributing factor to mental illnesses such as depression. In this shallow exploration, we evaluate the cost-effectiveness of Fortify Health's work to address mass scale iron-deficiency anemia in India. Read the report to discover what effect adding a small amount of iron to wheat flour may have on happiness.
This page is under construction and will be updated soon.
In November 2023, we published Version 3 of our psychotherapy analysis. This was a working report in which we estimated the effects of psychotherapy in low- and middle-income countries, as well as the cost-effectiveness of two psychotherapy charities: StrongMinds and Friendship Bench. In the first part of 2024, we have updated several parts of the analysis. This present, interim report, Version 3.5, describes the changes we have made so far. Our analysis suggests that both StrongMinds and Friendship Bench are among the most cost-effective charities we have evaluated to date. Friendship Bench has a cost-effectiveness of 53 WELLBYs per $1,000 donated and StrongMinds has a cost-effectiveness of 47 WELLBYs per $1,000 donated.
To my surprise and delight, the Happier Lives Institute (HLI) is now five years old. When we started on this ambitious, idealistic project of finding and sharing the most impactful, evidence-based ways to improve happiness for others, I would have been delighted to last one year, let alone five. To celebrate, I’m sharing five lessons from our journey so far.
By: Michael Plant
Dr Michael Plant conducted an in-person site visit to better understand the StrongMinds programme and the people in it. We don’t expect site visits can, or should, be decisive for evaluation purposes (they are ‘anecdata’), but they can nevertheless be informative.
Visitor: Dr Michael Plant, Founder & Research Director at the Happier Lives Institute
Date of visit: 11 April 2024
Document written: 19 April 2024
By: Michael Plant
Dr Michael Plant conducted an in-person site visit to better understand the Friendship Bench programme and the people in it. We don’t expect site visits can, or should, be decisive for evaluation purposes (they are ‘anecdata’), but they can nevertheless be informative.
Visitor: Dr Michael Plant, Founder & Research Director at the Happier Lives Institute
Date of visit: 04 April 2024
Document written: 10 April 2024
By: Michael Plant
In this report, summer research fellow Thomas Beuchot briefly scoped out the public policies that promise to be most effective at increasing wellbeing. The policies found as the most promising according to the grading criteria are mostly policies that are also widely valued and pursued outside of a wellbeing lens: unemployment, strong relationships, increased access to nature, and opportunities to volunteer.
By: Thomas Beuchot
We are pleased to share a new joint working paper between HLI and the Wellbeing Research Centre, Oxford University. In it, Dr Michael Plant explores the challenges of the nature and plausibility of the life satisfaction theory (LST) of wellbeing.
By: Michael Plant
In this report, we provide an overview of all our evaluations to date as well as our conclusions for Giving Season 2023.
In this substantial update to our work on psychotherapy we conduct a systematic review, a meta-analysis, and cost-effectiveness analyses of two charities who deliver psychotherapy (StrongMinds and Friendship Bench). This is a working report that will be updated over time, results may change.
We set out our research priorities.
On the 2nd of June 2023, Elie Hassenfeld was interviewed on the 80'000 hours podcast. Here, we present our responses.
By: Michael Plant
In this shallow cause exploration, we explore the impact of lead exposure on subjective wellbeing. We review the literature, model the impact of lead exposure on wellbeing, and conduct some back-of-the-envelope calculations of the cost-effectiveness of various interventions to decrease lead exposure.
On the 22nd of March 2023, GiveWell posted an “Assessment of Happier Lives Institute’s Cost-Effectiveness Analysis of StrongMinds”. Here, we present our responses. First, a general response from Michael. Second, a technical response from Joel.
We present a pilot of 50 survey questions we intend to use to assess questions of comparability, linearity, and neutrality in subjective wellbeing measurements.
In this shallow cause exploration, we explore the impact of immigration on subjective wellbeing. We review the literature, model the impact of immigration on wellbeing, and conduct some back-of-the-envelope calculations of the cost-effectiveness of various interventions to increase immigration.
In this shallow cause exploration, we explore the relationship between pain and subjective wellbeing; assess the severity and scale of chronic pain in terms of life satisfaction; and offer some novel back-of-the-envelope calculations for the cost-effectiveness of several interventions to treat pain.
We aim to produce rigorous and useful research for decision-makers. In order to do that better, it would really help us to know what you thought of our work in 2022.
A collection of recommended papers, articles, books, and reports from 2022.
This year, four of our publications have been awarded prizes. In this post, we provide a summary of each piece and why the judges rated them so highly.
In this report, we summarise the debate about the efficacy of deworming, present the first analysis of deworming in terms of subjective wellbeing, and compare the cost-effectiveness of deworming to StrongMinds (our current top recommended charity).
Our charity recommendation for 2022 is StrongMinds, a non-profit that provides group psychotherapy for women in Uganda and Zambia who are struggling with depression.
How should we compare the value of extending lives to improving lives? Doing so requires us to make various philosophical assumptions, either implicitly or explicitly. But these choices are rarely acknowledged or discussed by decision-makers, all of them are controversial, and they have significant implications for how resources should be distributed.
We raise twelve critiques of GiveWell’s cost-effectiveness analyses. Ten apply to specific inputs for malaria prevention, cash transfers, and deworming. Two are relevant for more than one intervention.
Given the current state of our moral knowledge, it is entirely reasonable to be uncertain about a wide range of moral issues. This paper considers the suggestion that appropriateness under moral uncertainty is a matter of dividing one’s resources between the moral theories in which one has credence, allowing each theory to use its resources as it sees fit.
By: Harry R. Lloyd
We’re delighted to welcome three new members to our team: Dr Lily Yu (Grants Strategist), Dr Ryan Dwyer (Senior Researcher), and Rachel Strate (Operations Manager).
We propose the wellbeing-adjusted life year (WELLBY), the wellbeing equivalent of the DALY or QALY, as the obvious framework to do cost-effectiveness analyses of non-health, non-pecuniary benefits.
We make four recommendations to improve GiveWell’s cost-effectiveness analyses: (1) publicly explain and defend their assumptions about the effect of deworming over time; (2) explain their cost-effectiveness analyses in writing; (3) illustrate the sensitivity of their results to key parameters; (4) make it clear when an estimate is subjective or evidence-based.
This post is a philosophical review of Open Philanthropy’s Global Health and Wellbeing Cause Prioritisation Framework, the method they use to compare the value of different outcomes. In practice, the framework focuses on the relative value of just two outcomes, increasing income and adding years of life.
By: Michael Plant
This post explores and evaluates an internal bargaining approach to moral uncertainty. On this account, the appropriate decision under moral uncertainty is the one that would be reached as the result of negotiations between agents representing the interests of each moral theory, who are awarded resources in proportion to your credence in that theory.
By: Michael Plant
We’re excited to introduce you to our 2022 cohort of summer research fellows who will be joining us in July and August for a seven-week paid internship. Their projects will help to deepen our understanding of the nature and measurement of wellbeing and identify cost-effective ways for individuals and governments to increase it.
Progress Studies has been popularised by academics such as Tyler Cowen and Steven Pinker. However, the Easterlin Paradox presents a real challenge to the claim that if we want more progress, we just need to improve the long-run growth rate - a view that Cowen argues for in his book Stubborn Attachments.
By: Michael Plant
We discuss the progress we made in 2021, the lessons we've learned, and our plans for 2022.
We update our previous analysis to incorporate the household spillover effects for cash transfers and psychotherapy. We estimate that psychotherapy is 9 times (95% CI: 2, 100) more cost-effective than cash transfers. The charity StrongMinds is estimated to be 9 times (95% CI: 1, 90) more cost-effective than the charity GiveDirectly.
We’re excited to announce that we’ll be running our summer research fellowship again this year. The fellowship provides students and recent graduates with the opportunity to gain hands-on research experience and receive personal mentoring from our research team.
This report explains the common mistakes we make when predicting the intensity and duration of our own and others’ feelings and the implications this has for global priorities research.
By: Matthew Coleman
A collection of recommended papers, articles, books, and reports from 2020-21.
We're delighted to welcome Samuel Dupret (Research Analyst), Joy Bittner (Operations Manager), Barry Grimes (Communications Manager), and Dr Caspar Kaiser (trustee).
Drawing on evidence from over 80 studies and over 140,000 participants, we compare the cost-effectiveness of cash transfers and psychotherapy by estimating their effect on the recipient's subjective wellbeing and affective mental health.
This report explains how we determined the cost-effectiveness of StrongMinds using subjective wellbeing and affective mental health.
This report explains how we determined the cost-effectiveness of group or task-shifted psychotherapy in low- and middle-income countries using subjective wellbeing and affective mental health.
This report explains how we determined the cost-effectiveness of cash transfers using subjective wellbeing and affective mental health.
The Mental Health Programme Evaluation Project (MHPEP) was an HLI-led volunteer project that ran from February 2019 to October 2021.The principal aim of the project was to identify and direct donations to highly impactful mental health programmes.
This year, we are running our first Summer Research Fellowship. We received over 60 applications for the eight-week programme and we’re excited to be joined by six of the brightest up-and-coming talents in the field of subjective well-being research.
We’re looking for Summer Research Fellows to contribute to our research agenda.
This report investigates the global burden of mental illness. It sets out how big the problem is, how much spending it receives, and how those resources are allocated. It then focuses specifically on what can be done to reduce anxiety and depression in low-income countries.
In this post, we summarise our 2020 annual review, introduce our 2021-22 research agenda, and announce our latest vacancies.
We set out our research priorities.
We know that cash transfers reduce poverty, improve health and enhance education but what impact do they have on how people feel and think about their lives? We find that cash transfers have a small, positive effect on subjective wellbeing, one that lasts for several years.
There are long-standing doubts about whether data from subjective scales are cardinally comparable—should we, for instance, believe that if two people self-report their happiness as '7/10' then they are as happy as each other? It is unclear how to assess whether these doubts are justified without first addressing two unresolved theoretical questions: how do people interpret subjective scales, and which assumptions are required for cardinal comparability? This working paper offers answers to both.
By: Michael Plant
Millions suffer excruciating pain. Millions more suffer moderate or severe pain. They suffer despite the fact that cheap and effective treatments exist. This report briefly discusses the measurement of pain then explores three major causes of pain and what might be done to relieve them.
This short article summarises what philosophers do (and don't) mean by the term "wellbeing". It introduces the three main rival accounts of what wellbeing is and considers their theoretical strengths and weaknesses.
We show how Wellbeing-Adjusted Life Years (WELLBYs) can be used to estimate the value of different outcomes. We then estimate the values of two key inputs in GiveWell’s analysis: doubling consumption for one person for one year and averting the death of a child under 5 years old.
This working paper makes three main claims: 1) life satisfaction theories are indistinguishable from global desire theories; 2) these theories are the only subjectivist accounts of wellbeing; and 3) subjectivism is implausible, although for different reasons from those that are usually given.
By: Michael Plant
Our strategy has developed significantly since we launched in June 2019. While we continue to be interested in mental health, we are not just a charity evaluator for mental health interventions. We see ourselves as a ‘meta’ org conducting global priorities research.
We are delighted to announce that Joel McGuire has joined the Happier Lives Institute as a Research Analyst. He will be working mainly on our applied research projects.
The Happier Lives Institute was formed in late 2018 by a group of committed individuals interested in the subjects of happiness, mental health and effective altruism. Our broad aim was to find the best ways to improve global happiness.
We set out our research priorities.
By: Michael Plant
In his DPhil thesis, Michael Plant critiques and develops claims about how individuals can do the most good including discussion of the value of saving lives, how best to improve lives, and cause prioritisation methodology.
By: Michael Plant
This article gives a brief introduction to the measurement of wellbeing and how to compare the impact of various outcomes, such as improving health or reducing poverty.
By: Michael Plant