Book excerpt: This book demonstrates how to address practical and ethical challenges when assessing older adults with neurocognitive disorders, like dementia. Expanding on the ABA/APA's Assessment of Older Adults with Diminished Capacity: A Handbook for Psychologists, it explores the tension between ensuring a client's autonomy while protecting them from harm, particularly when decision-making capacity or daily living skills are impaired. Chapters cover a range of complex issues in careful detail, including financial exploitation, undue influence, sexual consent, and medical aid in dying.