Introduction to Psychology
Popular Psychology

Back to the directoryFind in the timeline

The UK Behavioural Insights Team

The Behavioural Insights Team began as a unit embedded in UK government that argued for randomized trials of small changes to public services. It became a part-owned company in February 2014. This is government practice, not consumer marketing.

2010 to 2014. The id uses 2010, the formation year in the research brief. No primary document opened for this record states the formation date. The documents read are dated 14 June 2012 (Test, Learn, Adapt) and 2015 (update report covering the February 2014 change of status). Chronology section: 2010 to 2026.

PracticeDocumentedDecisions

Where it sits
Academic psychologyResearch published for other researchers and students.
Evidence level
DocumentedThe event or practice is documented by primary or authoritative sources.
Sources inspected
5 of 54 with the relevant text, company document or archive item checked, 1 as an abstract or reference article, 0 not verified.

What happened

The Behavioural Insights Team began as a unit embedded in the UK government. In June 2012 it published, with the Cabinet Office, Test, Learn, Adapt, arguing that randomized controlled trials should be used much more in domestic public policy. In February 2014 it became a social purpose company partly owned by the Cabinet Office, Nesta and the team itself, according to its own update report.

The psychological idea

MINDSPACE, a report the Cabinet Office commissioned from the Institute for Government, is a mnemonic for nine influences on behavior: messenger, incentives, norms, defaults, salience, priming, affect, commitments and ego. It calls them non-coercive and contrasts changing contexts with changing minds. Test, Learn, Adapt sets out nine steps for a randomized trial, from comparing interventions to measuring results and adapting the policy.

In practice

This is government practice. The team's update report says it had run over 150 randomized controlled trials, had grown from 14 people in February 2014 to more than 60, and that applying messages across HMRC's debt management brought £210 million forward in 2012 to 2013. These are the team's own figures. Separately, Hallsworth and colleagues report two field experiments with more than 200,000 UK individuals in which social norm and public goods messages added to tax reminder letters considerably enhanced compliance.

Why it mattered

The update report says the team helped the governments of New South Wales and Singapore set up behavioral insights units, and a minister's foreword in it describes the team's work across almost every policy area. Any link to consumer marketing is through shared ideas such as defaults and norms, not through shared practice.

Limits and qualifications

Most results about the team come from its own reports, which are self-report. MINDSPACE is labeled a discussion document, not a statement of government policy, and admits uncertainty about how lasting effects are and whether they carry across circumstances. The NBER abstract of the tax study gives no effect sizes. None of these documents tests an application in consumer marketing.

Evidence behind the claims

  • The team's update report states that in February 2014 the Behavioural Insights Team evolved from a unit embedded in the UK government into a social purpose company partly owned by the Cabinet Office, Nesta and the team itself.

    Company self-reportSource: [1]Where: Executive Summary, page 5

  • The update report says the team had run over 150 randomized controlled trials and had grown from 14 people in February 2014 to more than 60, and that it helped New South Wales and Singapore set up behavioral insights units.

    Company self-reportSource: [1]Where: Executive Summary, pages 5 and 6

  • The update report says that applying successful messages throughout HMRC's debt management practices led to 210 million pounds being brought forward in the 2012 to 2013 financial year.

    Company self-reportSource: [1]Where: Chapter 7, Fraud, Error and Debt, page 35

  • MINDSPACE was commissioned by the Cabinet Office from the Institute for Government, lists nine influences (messenger, incentives, norms, defaults, salience, priming, affect, commitments, ego), is labeled a discussion document, not a statement of government policy, and has David Halpern among its authors; the update report names Halpern as the team's Chief Executive.

    DocumentedSources: [2] [1]Where: MINDSPACE About the authors, About this report and Executive summary (pages 5 to 8, page footers); update report Executive Summary, page 5

  • MINDSPACE says there is uncertainty over how lasting many of the effects are and how effects that work in one set of circumstances will work in another.

    DocumentedSource: [2]Where: Conclusion, page 10

  • Test, Learn, Adapt was published on 14 June 2012 by the Cabinet Office and the Behavioural Insights Team; its authors are Haynes, Service, Goldacre and Torgerson; it argues that randomized controlled trials should be used much more in domestic policy and sets out nine steps.

    DocumentedSources: [3] [4]Where: Title page, executive summary and introduction (pages 4 to 7); gov.uk publication page

  • Hallsworth, List, Metcalfe and Vlaev report two natural field experiments with administrative data from more than 200,000 UK individuals, adding social norms and public goods messages to payment reminder letters, and conclude this considerably enhances tax compliance; the update report names Hallsworth as the team's Head of Health and Tax.

    Experimental findingSources: [5] [1]Where: NBER working paper abstract page; update report chapter 7, page 35Checked at abstract level

People involved

  • David Halpern. Chief Executive of the team in 2015 and co-author of MINDSPACE
  • Owain Service. Deputy Director in 2012, Managing Director in 2015
  • Laura Haynes. Head of Policy Research and author of Test, Learn, Adapt
  • Michael Hallsworth. Head of Health and Tax at the team in 2015 and lead author of the tax-letter field experiments

In the Psy101 course

  • OpenStax Psychology 2e, section 2.3: Analyzing FindingsChapter 2, Psychological Research. Method. Nearest related section; it does not discuss this topic by name.Nearest related section: it covers causation, replication and mentions random assignment briefly, but does not discuss randomized trials in public policy.

This is course relevance only. It is not evidence for the historical or corporate claims on this page.See the full course map.

Sources and inspection

5 of 5 sources were opened and read at the level shown. A source marked as not verified supports no claim on this page by itself.

  1. [1]
    The Behavioural Insights Team: Update report 2013-2015Behavioural Insights Team. Behavioural Insights Ltd, 2015. Company document. Company document.Company document readRead the contents, foreword, executive summary (pages 4 to 6) and chapter 7 (pages 35 and 36) of the team's own update report as page images.
  2. [2]
    MINDSPACE: Influencing behaviour through public policyDolan, P; Hallsworth, M; Halpern, D; King, D; Vlaev, I. Cabinet Office and Institute for Government, 2010. Report. Primary source.Relevant text checkedRead pages 1 to 10 as page images: cover, contents, foreword, authors, About this report, executive summary and conclusion. The year 2010 is not printed on these pages.
  3. [3]
    Test, Learn, Adapt: Developing Public Policy with Randomised Controlled TrialsHaynes, L; Service, O; Goldacre, B; Torgerson, D. Cabinet Office, Behavioural Insights Team, 2012. Report. Primary source.Relevant text checkedRead pages 1 to 8 as page images: title page, authors, contents, executive summary and introduction.
  4. [4]
    Test, Learn, Adapt: Developing Public Policy with Randomised Controlled Trials (publication page)Cabinet Office; Behavioural Insights Team. GOV.UK, 2012. Report. Primary source.Archive page readRead the GOV.UK publication page for the date, 14 June 2012, the publishing organizations and the summary.
  5. [5]
    The Behavioralist as Tax Collector: Using Natural Field Experiments to Enhance Tax ComplianceHallsworth, M; List, J; Metcalfe, R; Vlaev, I. NBER Working Paper 20007 (published in Journal of Public Economics 148, 14-31, 2017), 2014. Journal article. Primary source.Abstract or publisher record onlyRead the NBER abstract page. It gives no effect sizes, and the journal version was not opened.

Access note: The 2010 formation date is not confirmed by any primary document opened. The 2014 change of status is stated in the team's own report. The NBER tax paper is not stated in the sources opened to be team work.

Independent source review: Claude review agent, independent of the research agent, 2026-10-21. Verdict: pass-with-edits.