This issue includes several meta-analyses, reviews, and empirical studies that address topics related to adult attachment, sexual and gender minority mental health, personalization of youth psychotherapy, hoarding disorder, ambulatory assessments, and assessing PTSD. Karantzas, Younan, and Pilkington reports a meta-analysis examining associations between adult attachment styles and early maladaptive schemas with the goal of establishing a framework for tailoring therapy to address the unique needs of patients with different attachment styles. There are two commentaries by Mercer and Johnson. Helminen and colleagues discuss findings from a meta-analysis examining the associations between self-compassion, minority stress, and mental health. They also test whether self-compassion mediates the association between minority stress and mental health. The authors emphasize self-compassion as a key coping resource for buffering risk associated with minority stress. Two commentaries on this article include one by Cardona, Cohen, and Feinstein and another by Sánchez. Venturo-Conerly and colleagues provide a scoping review focused on modular therapies for treating youth mental health, with an emphasis on clinical decision-making. The authors obtained relevant protocols of modular psychotherapies and concluded that decision-making relies heavily on clinical judgement, with less emphasis on patient preferences and statistical algorithms, which might help to maximize effectiveness. Two commentaries are provided by Boustani and Ribeiro da Silva. Pickering and Norberg reviews evidence supporting hoarding disorder and buying-shopping disorder as behavioral addictions according to the Components Model of Addiction and the Interaction of Person-Affect-Cognition-Execution (I-PACE) model. Three commentaries are provided by Brand and Müller, Griffiths, and Timpano and Grisham. Schemer, Glombiewski, and Scholten provide a systematic review and Delphi study focused on evaluating the use of ambulatory assessments, network analyses, and single-case experimental designs in psychotherapy research and practice. The authors underscore both advancements and challenges of these methods and propose future efforts to establish clear guidelines and practical tools for implementing these methods. A commentary is provided by Kaiser. Finally, Forkus and colleagues review evidence supporting the psychometric properties of the Posttraumatic Stress Disorder Checklist (PTSD) for DSM-5 with the goal of guiding clinical and research applications. A commentary is provided by Bovin and Marx. on the overreliance on this instrument as a measure of PTSD diagnostic status. Visit this page for the full contents of this issue.