New and old challenges for clinical psychology and psychotherapy toward 2030

Clinical psychology and psychotherapy face a paradigm shift toward more individualized, mechanism-oriented, and transdiagnostic approaches. Recent umbrella reviews show that both psychotherapies and pharmacotherapies for adult mental disorders have only minor effect sizes when only the best studies are considered, with small differences between them and few extra benefits from combining them. New challenges include integrating psychedelic-assisted therapy, using neuroimaging to define psychopathology based on shared neurobiological mechanisms rather than traditional diagnostic categories, expanding digital and mHealth interventions, and applying the biopsychosocial model more effectively in clinical practice. The field must move from disorder-specific protocols to dimensional, person-centered care that combines neuroscience with psychosocial formulation.

Study at a glance

Abstract

The main goal of this grand challenge article is to look at current issues, opportunities, and trends about clinical psychology and psychotherapy fields, that include a wide range of topics related to counseling, rehabilitation psychology, neuropsychology, and all types of psychological interventions in both traditional clinical settings (like hospitals, clinics, services, laboratories, etc.) and new clinical ones (like remote outpatient clinics, telehealth, e-health, and mHealth-based settings). The synergic match of medicine and psychology in the interdisciplinary treatment of primary organic and mental diseases leads to a substantial progression of the biopsychosocial approach in contemporary clinical and research initiatives within the health care sector. Medicine alone could be considered "a soul without psychology" (TIME magazine -Dec. 24, 1956), but fortunately now there is no medical area without a corresponding field in Clinical Psychology: psycho-cardiology, psycho-oncology, psycho-geriatrics, psycho-pneumology, psycho-endocrinology, psycho-neurology and neuropsychology, psychology in pain management, in surgery, etc. are only some applications of the significant impact of psychology into clinical settings. The Lancet's warning that "No health without mental health" (Prince et al., 2007) is still valid, as are the words "No medicine without psychology" (Castelnuovo, 2010b).The future of Clinical Psychological Investigation: where are we going? A tentative update My previous "Grand Challenge" article on the clinical (and health) psychology specialist area of the Frontiers in Psychology journal (Castelnuovo, 2017) indicates that several of the suggested ten major themes remain intriguing and hold potential as catalysts for study within our discipline. First I will revisit the old challenges I identified in 2017 and then I will discuss the new challenges that have arisen since then, trying to find similarities but also novelties in the development of topics focused on clinical psychology fields.In 2017, I proposed that future research should move ahead from the traditional dichotomy between pharmacological and psychological treatments to an integrative framework, given the substantial evidence supporting the efficacy of combination therapy over monotherapy in the treatment of depression (Cox et al., 2014;Cuijpers et al., 2014;Guidi, Fava, Fava, & Papakostas, 2011;Guidi, Tomba, & Fava, 2016;E. Weitz, Kleiboer, van Straten, Hollon, & Cuijpers, 2017; E. S. Weitz et al., 2015). It is very relevant that further research will focus on identifying the optimal combination or sequential application of psychotherapy and pharmacotherapy for each specific psychopathology and individual patient (Guidi et al., 2016), while also taking into account the patient's preferences (Angermeyer, van der Auwera, Carta, & Schomerus, 2017). In recent years, numerous additional evidences have emerged about classic psychotropic medicines. Leichsenring et al. (Leichsenring, Steinert, Rabung, & Ioannidis, 2022) conducted a comprehensive umbrella review that reported evidence from 102 meta-analyses, incorporating approximately 3,800 randomized controlled trials and over 650,000 patients, to assess the efficacy of psychotherapies and pharmacotherapies for the most important adult mental disorders. When we only considered the best studies from a methodological point of view, both psychotherapies and pharmacotherapies had statistically significant effect sizes, but they were mainly minor. Direct comparisons underlined that there were relatively small differences between the two types of treatment, and combining them only gave a few extra benefits. This article well underlined the "ceiling effect" in contemporary treatment research, noting that in spite of many years of disorder-specific research and development about interventions, minimal improvements have been achieved in real efficacy. Methodological limitations-such as publication bias, inadequate control conditions, brief treatment duration, and insufficient follow-upfurther limit the interpretability and therapeutic significance of current research. Even if the statistically significant effects found in the article are below the threshold and some differences are not so relevant for a current clinical impact, for clinical psychology and psychotherapy it is necessary a paradigm change towards more inventive, individualized, and mechanism-oriented methodologies, taking into account the need of enhancing therapy specificity, tackling heterogeneity in treatment response, merging staging and personalizing tactics, and broadening research on long-term and preventive therapies. In order to improve the efficacy of psychotherapy, methodological precision and transdiagnostic perspectives, are requested in order to address all the complexities of real-world clinical practice.A recent Cochrane systematic review (Schipper et al., 2024) sheds light about the growing phenomenon of new psychedelic drugs, considering advantages and disadvantages of psychedelic-assisted therapy (PAT) for many mental disorders. Six randomized controlled studies with 149 people investigated conventional psychedelics (psilocybin and LSD) and MDMA administered inside established psychotherapy settings. Low-certainty data reported that traditional psychedelics may reduce anxiety and depressive symptoms at least in a short-term perspective, however evidence for MDMA remains highly uncertain. There were no major negative effects that happened throughout treatment, however mild to moderate short-term side effects were widespread. Even if the review has significant methodological limitations, (limited sample sizes, inadequate blinding procedures, expectation effects), these results open to new growing challenges in clinical psychology and psychotherapy: the integration of innovative new psychedelic drugs-based interventions into current clinical practice and the possible new combinations of psychotherapy, as an active mechanism of change, with new potential drugs in order to improve change effects. Other problems include making sure that therapists are well-trained and follow the rules, dealing with patients who are vulnerable when they are in altered states of consciousness, and finding a way about legal and regulatory restrictions because most psychedelics are still illegal. This review noted that psychedelic-assisted therapy may serve as a transformative intervention in palliative mental health care.Promoting research on neuroimaging and neuroscience could enhance our comprehension of psychological and psychopathological phenomena (Allen et al., 2017;Aybek & Vuilleumier, 2017;McArthur, 2017;Warren et al., 2017), as documented in (Castelnuovo, 2017). Recent developments have emerged, including a substantial multicenter diagnostic study (Lett et al., 2025) that introduced an innovative framework for psychopathology based on shared neurobiological mechanisms rather than conventional DSM/ICD-based diagnostic categories.Considering multimodal neuroimaging and symptomatology from both populationbased and clinical cohorts, the authors defined six transdiagnostic aspects of psychopathology that transcend traditional diagnostic categories and report strong correlations with specific brain-based signatures. The results underscored essential deficiencies in nosographic systems that lack biological insight, such as diagnostic variability, elevated comorbidity, and poor connections between diagnoses and their underlying mechanisms. This article highlights a significant future problem for clinical psychology and psychotherapy: present evaluation, case conceptualization, and treatment planning are predominantly diagnosis-driven, despite increasing evidence that symptoms aggregate along neurobiologically relevant dimensions. To apply brain-derived dimensions in clinical practice, we need to move away from disorderspecific procedures and toward dimensional, mechanism-focused models of care.Other problems include figuring out how to use complex neurobiological data in clinically useful assessment instruments, avoiding neuro-reductionism while keeping psychosocial formulation, and reaching an agreement on which biomarkers are legitimate and useful. The need of multimodal integration rather than dependence on singular biological markers is to take into account. In general, the study says that the future of clinical psychology and psychotherapy will depend on how well they can combine new discoveries in neuroscience with transdiagnostic, biopsychosocial, and person-centered models of care.As emphasized in 2017, next to traditional areas of collaboration between medicine and psychology such as psychocardiology (Ginsberg, Pietrabissa, Manzoni, & Castelnuovo, 2015) or psychooncology (Castelli, Castelnuovo, & Torta, 2015) or pain management (Castelnuovo, Giusti, et al., 2016a, 2016b), areas of collaborations such as psychogeriatry, psycho-pneumology, psycho-endocrinology, or topics such as health behavior and prevention, psychosocial aspects of medical illness or impact of organic conditions on functioning have to be more deepened (Castelnuovo, 2017).In recent years, additional data has emerged across various medical domains, including promising new fields like as nephrology (Schmill et al., 2025).As stated in the previous point 3, a psychosomatic approach examining the direct psychobiological effects of cognitions, emotions, behaviors, and psycho-social and relational factors on the pathophysiology of medical diseases remains an evolving area of research (Fava, Guidi, Grandi, & Hasler, 2014;Guidi, Rafanelli, Roncuzzi, Sirri, & Fava, 2013). Furthermore, recent years have witnessed the emergence of mind-body and epigenetic investigations, providing additional data to the scientific and clinical domains (Jinich-Diamant et al., 2025;Kremer et al., 2025).The positive psychology paradigm (Huber, 2016;Schrank, Brownell, Tylee, & Slade, 2014) may be especially effective in pre-clinical domains such as prevention and wellness (Zinzen, 2025), as well as in non-clinical groups (Laure et al., 2025).In 2017, I stated that the use of mHealth platforms and new technologies could help clinicians in some critical situations such as the continuity of health assistance after a traditional period of inpatient care providing promising opportunities of monitoring and motivating patients, above all in the follow-up phase of treatment (Castelnuovo, Mauri, & Waki, 2016) or with rural populations with limited access to health care services. mHealth must validate its efficacy, necessitating further research, especially in the realm of cost-effectiveness, where emerging technologies may play a distinct role in a stepped-care model (Castelnuovo, 2017;Castelnuovo, Pietrabissa, Cattivelli, Manzoni, & Molinari, 2016;Castelnuovo & Simpson, 2011;Castelnuovo, Zoppis, et al., 2015).The proliferation of validated and recognized digital therapies in recent years could be pivotal ((Bertoli et al., 2025;Carrera et al., 2023;Castelnuovo et al., 2023), particularly in light of the impact of virtual reality-assisted interventions (Antichi, Baglio, Rossi, & Riva, 2025;Oasi, Rossi, Villani, & Riva, 2025;Riva et al., 2023;Rossi, Frisone, Riva, & Oasi, 2025). There will be a separate paragraph about the contribution of Artificial Intelligence has helped.Clinical psychology and psychotherapy have evolved and modified traditional protocols to address emerging populations and contexts, including chronic patients (Castelnuovo, Pietrabissa, et al., 2015;Castelnuovo, Zoppis, et al., 2015), elderly individuals (Molinari, Spatola, Pietrabissa, Pagnini, & Castelnuovo, 2014), and immigrants. minorities and refugees with customized care and treatment strategies (Dewitz et al., 2025;Mahajan, Choudhari, & Narayanan, 2025).Given that empirically supported treatments (ESTs) have already demonstrated their clinical efficacy within the evidence-based medicine (EBM) framework (Castelnuovo, 2010a), further investigation must concentrate on the examination of mediators and moderators, both within and beyond a Common Factors perspective, to identify or validate common or specific key elements for change and symptom reduction in clinical psychology and psychotherapy approaches (Holmbeck, 1997;Labus, 2007;Perz, Ussher, Butow, & Wain, 2011). A potential risk of conceptual defragmentation is outlined in the designated section.In 2017 (Castelnuovo, 2017) I stated that new questionnaires, scales, and semistructured interviews are necessary and must be implemented and validated to provide healthcare with and that have clinical significance et al., & & et al., study is in this taking into account the paradigm & et al., & data and can now help with and This and digital et al., 2025).In 2017 (Castelnuovo, 2017) I stated that to a significant impact in the clinical research must the between and practice providing for such as or The on in is an that could be It specific in clinical health psychology et al., Giusti, et al., 2016a, et al., clinical protocols have been to specific and major diagnostic in mental such as and have their to more not only but also various and for mental health on a approach that with and providing an empirically validated of the and with the use of in a therapeutic settings. 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