Terapia de Aceptación y Compromiso en conducta suicida: una revisión sistemática / Acceptance and Commitment Therapy on suicidal behavior: a systematic review

El suicidio se ha convertido en un problema social y de salud pública a nivel mundial. En este sentido, la Terapia de Aceptación y Compromiso (ACT) podría ser eficaz en su abordaje, existiendo evidencia sobre la relación entre algunos de sus componentes y la conducta suicida. Así, el presente estudio tuvo por objetivo realizar una revisión sistemática sobre la eficacia de ACT en conducta suicida. Para ello se siguió el protocolo PRISMA, empleando las siguientes bases de datos: PsycInfo, PubMed, Scopus y PsicoDoc. Inicialmente se obtuvieron 108 publicaciones potencialmente relevantes, de las cuales, finalmente, 13 fueron incluidas en la revisión. La calidad de los estudios se analizó a través de un instrumento de evaluación de riesgo de sesgos. Como resultados, a nivel general se observaron disminuciones estadísticamente significativas en ideación suicida (IS) y factores de riesgo de suicidio. Además, algunos estudios señalaron relaciones estadísticamente significativas entre un aumento de flexibilidad psicológica y la disminución de IS. Si bien los datos apuntaron a una posible eficacia de ACT en la reducción de IS, es necesario llevar a cabo mayor número de estudios experimentales que contemplen la complejidad de la conducta suicida y exploren los procesos de cambio implicados.(AU)

Suicide has emerged as a pressing global issue affecting both so-ciety and public health.In this context, Acceptance and Commitment Therapy (ACT) could prove effective in its approach, supported by evi-dence of the relationship between certain components of ACT and suicidal behavior. Thus, the present study aims to conduct a systematic review on the efficacy of ACT in suicidal behavior. For this, the PRISMA protocol was followed, using thefollowing databases: PsycInfo, PubMed, Scopus and PsicoDoc. Initially, 108 potentially relevant publicationswereobtained,13ofwhichwerefinallyincludedinthereview.Weanalyzedstudy qualityus-ingariskofbiasassessmentinstrument.Asaresult,statisticallysignificantdecreases in suicidal ideation (SI) and suicide risk factors were observed. In addition, some studies indicated statistically significant relationships be-tween increased psychological flexibility and decreasedSI.WhilethedatasuggestedthepotentialeffectivenessofACTinreducingsuicidal ideation (SI), more experimental studies are needed to consider the complexity of suicidal behavior and explore the processes of changeinvolved.(AU)

Free-living physical activity and executive function: A multi-study analysis of age groups and times of day / Actividad física de vida libre y función ejecutiva: un análisis de múltiples estudios de grupos de edad y horas del día

Background: Executive Function (EF) is a potential mechanism linking physical activity (PA) and mental health. However, evidence regarding the association between free-living PA and EF is limited with mixed results. Across two studies, we examined associations between accelerometer-assessed moderate-to-vigorous PA (MVPA) and facets of EF in different age groups (Study 1) and at different times of day (Study 2). Method: In Study 1, we tested the association between MVPA and verbal fluency across seven days in 285 participants (children, adults, older adults). In Study 2, we tested between- and within-person associations between MVPA and working memory (afternoon, evening, next morning) across three 18-day bursts in 64 preadolescents. Results: Study 1 showed no association between MVPA and verbal fluency overall, but there was an interaction by age group: a positive association was evident in older adults only. In Study 2, we observed a positive between-person association between MVPA and subsequent afternoon and next morning working memory, but not within-person. In the evening, MVPA was not related to working memory. Conclusions: The association between free-living PA and EF differs between age groups and times of day. Future research should consider these factors when examining the association and its role for mental health.(AU)

Aberrant positive affect dynamics in individuals with subthreshold depression: Evidence from laboratory and real-world assessments / Dinámica aberrante del afecto positivo en individuos con depresión subumbral: evidencia de evaluaciones de laboratorio y del mundo real

Background/Objective: Reduced positive affect (PA) is a core feature of major depressive disorder (MDD). However, the precursor of MDD, subthreshold depression (StD), has received less attention in this regard. Therefore, we examined PA dynamics in StD, integrating laboratory-based and ecological momentary assessment (EMA) approaches. Method: Participants were college students recruited from Chinese universities (31 with StD, and 39 healthy controls (HC)). Positive mood was induced in the laboratory by an eight-minute comedy clip used to assess PA reactivity and maintenance. To extend findings to the real world and explore mechanisms of PA maintenance, 53 participants with StD and 64 HC reported their emotional states 14 times daily for one week via EMA. Multilevel models were used to test for predictors of PA inertia. Results: In the laboratory, participants with StD achieved the same PA reactivity as HC when facing positive stimuli, yet the curve-fitting revealed difficulties for the StD group in maintaining PA over time. Such reduced capacity was further observed in real-world settings, manifesting in significantly greater PA inertia. Conclusions: High PA inertia in daily life may reflect resistance to mood change in StD, explaining anhedonia and difficulties with emotional maintenance, and highlighting the need for early identification.(AU)

The efficacy and safety of ketamine for depression in patients with cancer: A systematic review / La eficacia y seguridad de la ketamina para la depresión en pacientes con cáncer: una revisión sistemática

Background: Management of depression in the oncology population includes supportive psychotherapeutic interventions with or without psychotropic medication, which take time to demonstrate effectiveness. Fast-acting interventions, like ketamine, can provide a rapid antidepressant effect; however, there has been limited research on effects of ketamine among cancer patients. The objective of this review is to provide an overview of research on the efficacy and safety of ketamine on depression in patients with cancer. Methods: We reviewed the published literature in MEDLINE® (via PubMed®), EMBASE, and Scopus from 1 January 1982 to 20 October 2022. We screened the retrieved abstracts against inclusion criteria and conducted a full‐text review of eligible studies. Following extraction of data from included studies, we used a framework analysis approach to summarize the evidence on using ketamine in patients with cancer. Results: All 5 included studies were randomized clinical trials conducted in inpatient settings in China. In all included studies ketamine was administered intravenously. Three studies used only racemic ketamine, and two studies used both S-ketamine and racemic ketamine. All included studies reported ketamine a tolerable and effective drug to control depression symptoms. Conclusion: Included studies showed administration of sub-anesthesia ketamine significantly improves postoperative depression among patients with cancer.(AU)

Acute high-intensity interval exercise improves food-related cognition in young adults with obesity: An ERP study / El ejercicio agudo en intervalos de alta intensidad mejora la cognición relacionada con los alimentos en adultos jóvenes con obesidad: un estudio ERP

Purpose Cognitive function, particularly food-related cognition, is critical for maintaining a healthy weight and preventing the acceleration of obesity. High-Intensity Interval Exercise (HIIE) is an increasingly popular form of exercise and has been shown to improve physical fitness and cognitive function. However, there is limited research on the effects and underlying mechanisms of HIIE on general and food-related cognition among adults with obesity. The aim of the current study was to examine the influence of a single bout of HIIE on food-related cognition among young adults with obesity. Methods Fifteen young men with obesity (BMI = 33.88 ± 4.22, age = 24.60 ± 5.29 years) were recruited. Participants took part in a HIIE condition consisting of 30 minutes of stationary cycle exercise (5-min warm-up, 20-min HIIE and 5-min cool down), and a control session consisting of a time and attention-matched period of sedentary rest in a counterbalanced order. Behavioral (reaction time and accuracy) and event-related potential measures (P3 and the late positive potential, LPP) elicited during a food-related Flanker task were measured after the HIIE and control session. Results Shorter response times were observed following HIIE, regardless of congruency or picture type, with no change in accuracy. Increased P3 and LPP amplitudes were observed following HIIE relative to the control session. Conclusion The findings suggest a single bout of HIIE has a beneficial effect on general and food-related cognition among young adults with obesity, with increased recruitment of cognitive resources to support cognitive control. Future research is warranted to examine the dose-response relationship between acute bouts or longer participation in HIIE on food-related cognition in obesity.(AU)

Volume of the Dentate Gyrus/CA4 Hippocampal subfield mediates the interplay between sleep quality and depressive symptoms / El volumen del subcampo del giro dentado/hipocampo CA4 media la interacción entre la calidad del sueño y los síntomas depresivos

Background: Emerging evidence increasingly suggests that poor sleep quality is associated with depressive symptoms. The hippocampus might play a crucial role in the interplay between sleep disturbance and depressive symptomatology, e.g., hippocampal atrophy is typically seen in both insomnia disorder and depression. Thus, examining the role of hippocampal volume in the interplay between poor sleep quality and depressive symptoms in large healthy populations is vital. Methods: We investigated the association between self-reported sleep quality, depressive symptoms, and hippocampal total and subfields’ volumes in 1603 healthy young adults from the Behavioral Brain Research Project. Mediation analysis explored the mediating role of hippocampal volumes between sleep quality and depressive symptoms. Results: Self-reported sleep quality and depressive symptoms were positively correlated. In addition, it negatively related to three hippocampal subfields but not total hippocampal volume. In particular, hippocampal subfield DG and CA4 volumes mediated the interrelationship between poor sleep quality and depressive symptoms. Conclusions: Our findings improved the current understanding of the relationship between sleep disturbance, depressive symptomatology, and hippocampal subfields in healthy populations. Considering the crucial role of DG in hippocampal neurogenesis, our results suggest that poor sleep quality may contribute to depression through a reduction of DG volume leading to impaired neurogenesis which is crucial for the regulation of mood.(AU)

Altered connectivity patterns of medial and lateral orbitofrontal cortex underlie the severity of bulimic symptoms / Los patrones de conectividad alterados de la corteza orbitofrontal medial y lateral subyacen a la gravedad de los síntomas bulímicos

Objective: Compared to clinical bulimia nervosa, sub-threshold bulimic symptoms are becoming more prevalent in non-clinical or general population, which is repeatedly linked with the connectivity in orbitofrontal cortex (OFC), including functionally heterogeneous the medial and lateral OFC (mOFC; lOFC). However, the specific connectivity patterns of the mOFC and lOFC in individuals with severe or mild bulimic symptoms (SB; MB) remain poorly understood. Methods: We first utilized resting-state functional connectivity (FC) and spectral dynamic causal modeling (spDCM) to investigate abnormal functional and effective connectivity (EC) of OFC subregions in adults with different severity of bulimic. The SB group (n = 21), MB group (n = 114), and healthy controls (HC, n = 91) underwent rs-fMRI scans. A generalized linear model was applied to determine the OFC-seeded whole-brain FC across the three groups. Subsequently, spDCM was used to estimate differences in EC among the three groups based on the FC results. Results: We observed a shared neural basis for SB and MB groups (i.e., weaker lOFC-superior parietal lobule connectivity), which may support the role of dysfunctional inhibitory control in general bulimic symptomatology. Whereas, SB group displayed greater lOFC-occipital pole connectivity than MB group, suggesting the specificity of the neural correlates of full-threshold/severe bulimia. The directional links from the mOFC to lOFC and amygdala could further explain the aberrant interactions of reward sensitivity with inhibitory control and homeostatic energy in sub-threshold/mild condition. Conclusion: The current study provides novel evidence that divergent connectivity patterns of the lOFC and mOFC may contribute to different severities of bulimia, which will expands our understanding of the neurobiological substrates underlying bulimia across a spectrum from healthy to unhealthy.(AU)

Cortical hemodynamics and inhibitory processing in preadolescent children with low and high physical activity / Hemodinámica cortical y procesamiento inhibitorio en niños preadolescentes con baja y alta actividad física

Background: Preadolescent children undergo developmental changes in inhibitory control. Maintenance of high levels of moderate-to-vigorous-intensity physical activity (MVPA) has been suggested to promote its maturation. We compared inhibitory control between children with low and high MVPA as well as their inhibitory processing stream and changes in cortical hemodynamics. Method: 109 participants aged 10 to 13 years wore accelerometers over 7 days. Those with MVPA levels of 30 min/d or less and 60 min/d or more further performed a computerized Stroop Color-Word task. Electroencephalography and functional near-infrared spectroscopy were used to record changes in inhibitory processing and cortical hemodynamics, respectively. Results: An interaction of MVPA group and sex indicated better interference in highly-active boys, but the opposite pattern in girls. Independent from sex, the high compared to low MVPA group showed greater P300 and PSW amplitudes, whereas no group differences were found for N200, N450, and changes in cortical hemodynamics. Conclusion: Children with high MVPA differ from their less-active peers by a distinct inhibitory processing profile, which is characterized by altered allocation of attentional resources and conflict resolution. However, these alterations do not necessarily translate into better performance, especially since MVPA is linked with higher inhibitory control in boys only.(AU)

The specificity of the auditory P300 responses and its association with clinical outcomes in youth with psychosis risk syndrome / La especificidad de las respuestas auditivas P300 y su asociación con los resultados clínicos en jóvenes con síndrome de riesgo de psicosis

Background: Schizophrenia often occurs in youth, and psychosis risk syndrome (PRS) occurs before the onset of psychosis. Assessing the neuropsychological abnormalities of PRS individuals can help in early identification and active intervention of mental illness. Auditory P300 amplitude defect is an important manifestation of attention processing abnormality in PRS, but it is still unclear whether there are abnormalities in the attention processing of rhythmic compound tone stimuli in PRS individuals, and whether the P300 amplitude induced by these stimuli is specific to PRS individuals and related to their clinical outcomes. Methods: In total, 226 participants, including 122 patients with PRS, 51 patients with emotional disorders (ED), and 53 healthy controls (HC) were assessed. Baseline electroencephalography was recorded during the compound tone oddball task. The event-related potentials (ERPs) induced by rhythmic compound tone stimuli of two frequencies (20-Hz, 40-Hz) were measured. Almost all patients with PRS were followed up for 12 months and reclassified into four groups: PRS-conversion, PRS-symptomatic, PRS-emotional disorder, and PRS-complete remission. The differences in baseline ERPs were compared among the clinical outcome groups. Results: Regardless of the stimulation frequency, the average P300 amplitude were significantly higher in patients with PRS than in those with ED (p = 0.003, d = 0.48) and in HC (p = 0.002, d = 0.44) group. The average P300 amplitude of PRS-conversion group was significantly higher than that of the PRS-complete remission (p = 0.016, d = 0.72) and HC group (p = 0.001, d = 0.76), and the average P300 amplitude of PRS-symptomatic group was significantly higher than that of the HC group (p = 0.006, d = 0.48)...(AU)

Clinical Psychology in the Era of Research Diagnostic Criteria (RDoC): Reconciling Individually-Focused Practice with a Broader Biopsychosocial Context.

There is growing consensus that diagnostic labels are insufficient to describe the individual child's psychiatric profile, much less inform the precise combination of interventions that will minimize the impact of risk and/or bolster protective factors over the course of a particular child's development. Moreover, investigations of neurobiological and genetic mechanisms associated with psychopathology have revealed considerable cross-diagnostic overlap, undermining the validity of models that propose a 1:1 relationship between risk and psychiatric disorder. Accordingly, recent publications have advocated for neurodevelopmental models that utilize trait-based measurement, as well as increased emphasis on integration of biological and experiential mechanisms. Despite an expanding body of literature supporting this conceptual shift, the practical implications remain unclear. In this special issue, we compile a collection of novel empirical research papers and reviews that build on the trans-diagnostic principles of the RDoC framework.

The key components of a clinical psychology formulation: A consensus study.

OBJECTIVE: Psychological formulation is a key competency for clinical psychologists. However, there is a lack of consensus regarding the key components and processes of formulation that are hypothesized to contribute to poor reliability of formulations. The aim of this study was to develop consensus on the essential components of a formulation to inform training for clinical psychologists and best practice guidelines. METHODS: A Delphi methodology was used. Items were generated from the literature and discussed and refined with a panel of experts (n = 10). In round one, 110 clinical psychologists in the United Kingdom rated the importance of components of formulation via an online questionnaire. Criteria for consensus were applied and statements were rerated in round two if consensus was not achieved. RESULTS: Consensus was achieved on 30 items, with 18 statements regarding components of a formulation and 12 statements regarding formulation process. Items that clinicians agreed upon emphasized the importance of integrating sociocultural, biological, strengths and personal meaning alongside well-established theoretical frameworks. Consensus was not reached on 20 items, including whether a formulation should be parsimonious or adhere to a model. CONCLUSION: Our findings provide mixed evidence regarding consensus on the key components of formulation. There was an agreement that formulation should be client-led and incorporate strengths and sociocultural factors. Further research should explore client perspectives on the key components of formulation and how these compare to the clinicians' perspectives.

Dianne L. Chambless (1948-2023).

Dianne L. Chambless, professor emerita of psychology at the University of Pennsylvania, died on July 14, 2023. Dianne received her doctorate in clinical psychology from Temple University in 1979. She then served on the faculties of the University of Georgia, American University, and the University of North Carolina Chapel Hill before going to the University of Pennsylvania for the final 17 years of her career. Dianne was a highly respected anxiety researcher, an award winning mentor, a leading advocate for the importance of basing clinical care on the best available research evidence, and a champion of women in academia. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Low reliability when determining criterion a for posttraumatic stress disorder from self-report descriptions of traumatic events: The need for transparent methods.

OBJECTIVE: Exposure to a traumatic event is a primary criterion (Criterion A) for meeting Posttraumatic Stress Disorder (PTSD). Using self-report to establish diagnostic criteria in research has become more common, especially with internet-based research. However, some individuals may construe events as traumatic when they do not meet Criterion A. There has yet to be a test of interrater reliability (IRR) from self-report of traumatic events. METHOD: Three graduate students in clinical psychology and three licensed psychologists rated Criterion A using the life events checklist (LEC), as well as the three modified LEC versions (specification of up to three index traumas; extension of part 2 of the LEC) aimed to increase IRR. One hundred participants completed each of the four versions of the LEC (N = 400). Bootstrapped permutation tests were used to estimate differences in IRR and to generate 95% confidence intervals (CIs). RESULTS: Overall, findings indicated fair-moderate IRR (Fleiss's kappa) κ = 0.428, 95% CI [0.379, 0.477]. The other versions of the LEC (including additional clarifying questions in part 2 of the LEC and/or opportunities to describe up to three traumas) did not meaningfully increase IRR. CONCLUSIONS: Findings indicate that relying on self-report from the LEC alone and/or single-rater assessment of open-text trauma descriptions is not recommended for determining whether a traumatic event meets Criterion A. We conclude that it is critical when collecting self-reported PTSD symptoms to provide a clear description of how Criterion A was assessed, initial agreement between raters, and how disagreements were resolved. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

A supposedly objective thing I'll never use again: Word association and the quest for validity and reliability in emotional adjustment research from Carl Jung to Carl Rogers (1898-1927).

As the first two decades of the 20th century unfolded, clinical psychologists, who had until then been mainly associated with intelligence testing, attempted to implement a specific psychological method-Carl Gustav Jung's (1875-1961) word-association "test"-in individual personality assessments. As one of the early clinical psychologists who attempted to use the method, Carl Ransom Rogers (1902-1987) is conspicuously absent from the historiography of clinical psychological testing. In fact, historians have recently suggested that we are lacking narratives about Rogers' early ideas and techniques in the context of both the development of clinical psychology and the emergence of psychological testing as clinicians' foremost scholarly activity. In light of the above, this paper pursues two main goals. First, it attempts to reconstruct Rogers' first original research project on emotional adjustment testing in young children in the broader context of the development of word-association tests as carried out by Jung and Whately Smith (1892-1947). Second, it aims to reconstruct Rogers' earliest theoretical ideas as well as his epistemological assumptions regarding test objectivity, validity and reliability. By drawing on unpublished documents and heretofore overlooked primary sources I show that although Rogers initially drew from Jung and Smith's complex and refined tradition, he ultimately rejected it as well as the tests themselves. At first drawn to Smith's quantitative, empiricist and experimental philosophy of psychology, Rogers was deterred when the data gathered through his own research in 1927 suggested that word association tests had no real, effective clinical value when used in children. By showcasing the complex process of test construction and validation undertaken by 1920s clinical psychologists, Rogers' case illustrates the research practices, the methodological problems and the epistemological dilemmas faced by most if not all of his contemporaries.

Fragilising clients: A positioning analysis of identity construction during clinical psychology trainees' supervision.

CONTEXT: Western mental healthcare system reforms prioritise person-centred care and require clinicians to adjust their professional positions. Realising these reforms will necessitate clinicians-including clinical psychologists-acquiring professional identities that align with them. Learners develop professional identities through socialisation activities: within interactional spaces such as supervision learners come to understand the self (clinician) and, by extension, the other (client). A clinician's understanding of who I am is intertwined with an understanding of who they are. Our study offers a moment-by-moment examination of supervision interactions of clinical psychology trainees to illuminate processes through which the identities of therapists and clients are constructed. AIM: We examined how clinical psychology trainees and supervisors construct identities for themselves and clients in supervision. METHODS: We used positioning analysis to explore identity construction during interactions between supervisors (n = 4) and trainees (n = 12) in a clinical psychology training clinic. Positioning analysis focuses on the linguistic choices participants make as they position themselves (and others) in certain social spaces during everyday interactions. Twelve supervision sessions were audio recorded and transcribed. We found that clients were frequently positioned as fragile and subsequently analysed these sequences (n = 12). RESULTS: Clients' identities were constructed as fragile, which co-occurred with clinical psychologists' claiming positions as responsible for managing their distress. Supervisors played an active role in linguistically positioning clients and trainees in this way. Trainees rarely contested the identities made available to them by supervisors. DISCUSSION AND CONCLUSION: We suggest that linguistically positioning clients as fragile perpetuates paternalistic clinical discourses that do not align with mental healthcare reform priorities. We make visible how this is achieved interactionally through language and influenced by organisational power relations. Intentional efforts are required to support the professional identity construction of clinical psychologists in ways that do not perpetuate paternalism. We offer recommendations for education and clinical practice to support these efforts.

Homework as a driver of change in psychotherapy.

BACKGROUND AND OBJECTIVES: The utilization of Between-Session Homework (BSH) holds a longstanding tradition in the field of psychotherapy. Significantly, it serves as a pivotal catalyst for change within behavioral and cognitive-behavioral therapies, and has also garnered endorsement within psychodynamic and humanistic-experiential therapies. While our current conceptualization of BSH is characterized by assimilation and integration, diversity prevails in how BSH is incorporated into the treatment plan, spanning various therapy stages, thus necessitating a customized therapist-client interpersonal dynamic. Far from being a panacea, the employment of BSH emerges as a highly sophisticated and intricate clinical methodology, demanding a high degree of therapist proficiency and competence to facilitate client engagement. METHODS: In this introductory paper, we present an issue of the Journal of Clinical Psychology: In Session that exemplifies the diverse modalities through which BSH can be integrated into clinical practice across various client demographics and within distinct psychotherapeutic paradigms. We place specific emphasis on the pivotal role of BSH and its interplay with proposed mechanisms of change throughout the course of treatment. RESULTS: Initially, we provide an overarching view of the subject and expound on empirical research substantiating the efficacy of BSH in psychotherapy. Subsequently, we delve into strategies for adeptly integrating and monitoring BSH within clinical practice. CONCLUSIONS: Our primary objectives encompass affording readers a more lucid comprehension of (1) the content and nature of homework; (2) the influence of BSH on treatment outcomes; and (3) the ways through which therapists can foster client engagement with BSH. Finally, we introduce the six papers comprising this issue.

Clinical Trainee Perspectives on the Implementation of Trauma-Focused Training.

OBJECTIVE: Despite the high prevalence of trauma exposure in the United States and calls for the implementation of trauma-focused psychotherapy training, scant opportunities exist for such training in graduate clinical psychology programs. This study aimed to guide the implementation of trauma-focused psychotherapy training in graduate curricula by examining clinical trainees' perspectives on their current training and desired features for trauma-specific learning environments. The absence of research that centers trainee voices is notable; therefore, this study specifically focuses on trainee perspectives on implementation. METHODS: The New Haven competencies, developed by the American Psychological Association to support efforts to improve trauma-specific training, were used as a framework to guide the development of a mixed-methods survey. Current doctoral students (N=18) in one clinical psychology program completed the survey. RESULTS: Trainees overwhelmingly perceived the competencies to be relevant to their psychological assessment and therapy training and to their professional goals but noted a general lack of available trauma-specific training. Nearly all trainees believed that trauma-specific training should be required and expressed varied opinions regarding how requirements should be structured. Important features of a safe and supportive learning environment were reported to include coconstructed norms, choice and flexibility for participation, and integrated wellness practices. Further, instructors' trauma awareness, cultural humility, and responsiveness to students' experiences were emphasized by trainees as important. CONCLUSIONS: Effective implementation of trauma-specific psychotherapy training should be guided by ongoing dialogue between trainees and training stakeholders.