Books

Books and longer writing about delirium. The 4AT Manual was published on 31 July 2026. The complete PDF and EPUB are free to read or download from the4AT.com, with no registration. Kindle, paperback and hardback editions are also available through Amazon. A guide for patients, families and carers follows in October 2026.

The 4AT Manual Delirium family guide

The 4AT Manual

Published 31 July 2026

The 4AT Manual: A Practical Guide to Delirium Assessment

By Professor Alasdair MacLullich

The 4AT Manual is a practical guide to using the assessment consistently and acting on its results.

The 102-page print edition includes thirty worked clinical cases. It is written for nurses, doctors, allied health professionals, students and educators.

The complete PDF and EPUB editions are free to read or download, with no registration. Kindle, paperback and hardback editions are also available through Amazon.

Read or download free Kindle Paperback Hardback

What the manual covers

Why the 4AT was developed, and its role in delirium assessment.
How to administer and score each of the four items.
How to interpret the result and decide what to do next.
Worked clinical cases from a range of settings.
Common difficulties, special circumstances, and audit.
An overview of the supporting evidence.

It is written for nurses, doctors, allied health professionals, students, educators, researchers, and teams implementing delirium pathways or electronic health records.

Editions and licence

Title: The 4AT Manual: A Practical Guide to Delirium Assessment
Author: Professor Alasdair MacLullich
Edition: First edition, manual version 1.0, 2026
Publisher: Delirium Support Press
Free editions: PDF and EPUB from the4AT.com, with no registration.
Paid editions: Kindle, paperback (ISBN 978-1-918164-00-8) and hardback (ISBN 978-1-918164-05-3) from Amazon. Each link selects a local Amazon store.
Licence: Except where otherwise stated, the manual's text, tables and original diagrams are licensed under Creative Commons Attribution 4.0 International (CC BY 4.0). The 4AT oval logo, cover artwork and design, and separately credited third-party material are excluded. The licence permits reuse and adaptation of the licensed content, including translation, with attribution; see the manual's full copyright and reuse terms.

Page reviewed 13 September 2026.

Delirium (Acute Confusion): A Family Guide

Publishing October 2026

Delirium (Acute Confusion): A Family Guide to Sudden Changes in Thinking and Memory: Includes advice for people living with dementia

By Professor Alasdair MacLullich and Dr Sharmella Summan

A guide for people who have experienced delirium, and for families and carers trying to understand a sudden change in someone they know. It explains what delirium is, what families might see, how clinical teams assess and treat its causes, ways relatives and carers can help, and what recovery can be like.

While the book is in preparation, Delirium Support provides practical information about sudden confusion, getting help, delirium and dementia, supporting someone, and recovery.

Read about the family guide, including publication details

Enquiries

For media or publishing enquiries, please use the media and speaking page. For information about delirium, use the delirium overview, the4AT.com for professionals, or Delirium Support for patients, families and carers.