Thomas Max Achenbach (1940–2023).

Memorializes Thomas Max Achenbach (1940-2023). He is known for groundbreaking contributions to developmental psychopathology, a field that was shaped in part by his 1974 book with that title, and for creating the Achenbach System of Empirically Based Assessment (ASEBA), arguably the world's most widely used suite of procedures for assessing child, youth, adult, and older adult strengths and emotional and behavioral problems. His research revealed robust broadband syndromes of psychopathology, giving rise to the terms "internalizing" and "externalizing." The Child Behavior Checklist, the first measure of the ASEBA suite, has been translated into more than 110 languages and is used in science and clinical service settings around the world. (PsycInfo Database Record (c) 2024 APA, all rights reserved).