Dabb, CarolDryer, RachelBrunton, Robyn JKrägeloh, ChrisMoussa, MicheleYap, KeongRoach, Vijay JMedvedev, Oleg2025-04-152025-04-152025-04J Affect Disord, ISSN: 0165-0327 (Print); 1573-2517 (Online), Elsevier BV, 381, 33-43. doi: 10.1016/j.jad.2025.03.1840165-03271573-2517http://hdl.handle.net/10292/19087Up to 25 % of expectant fathers may experience anxiety symptoms, with potential adverse consequences for themselves and their families. This study developed a psychometrically sound measure of pregnancy-related anxiety for fathers, addressing a current gap in research and practice for psychological scales that specifically assess men's fears, worries, and concerns specific to pregnancy. An item pool encompassing men's pregnancy-related concerns and worries was generated based on findings from a systematic review (Dabb et al., 2023). Following expert panel review, 95 items were evaluated within the framework of the Rasch measurement model, using data from 292 expectant fathers (Mage = 29.9 years, SD = 5.55) from Australia (N = 146) and the USA (N = 146). The resultant 33-item unidimensional scale demonstrated good fit, no evidence for differential item functioning, sound levels of targeting, and excellent internal consistency reliability. The new Paternal Pregnancy-related Anxiety Scale (PPrAS) is a comprehensive measure of pregnancy-related anxiety for expectant fathers, with usefulness in both clinical and research contexts.© 2025 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).http://creativecommons.org/licenses/by/4.0/Expectant fatherPartnerPaternalPregnancy anxietyPregnancy-related anxietyRaschScale development3215 Reproductive Medicine32 Biomedical and Clinical Sciences42 Health SciencesClinical ResearchMental Health11 Medical and Health Sciences17 Psychology and Cognitive SciencesPsychiatry32 Biomedical and clinical sciences42 Health sciences52 PsychologyJournal ArticleOpenAccess10.1016/j.jad.2025.03.184