Dissociative experiences are common transdiagnostically, and particularly prevalent in psychosis. Such experiences have long been under-recognised in routine clinical practice, despite evidence that dissociation is related to clinical complexity and increased risk of self-harm and suicidality. Adopting a symptom-specific, targeted approach to conceptualisation and intervention for dissociation may help improve outcomes.

The evidence base for psychological treatments targeting dissociation is building, but training and guidance for clinicians remains sparse. This review outlines a preliminary approach to the treatment of a subtype of dissociative experience (felt sense of anomaly dissociation), based on emerging research evidence and clinical practice. The guidance is tailored to the context of psychosis, and may also have broader clinical relevance.

We present symptom-specific guidance for clinicians, including factors to consider in the assessment, formulation, and intervention for felt sense of anomaly dissociation in the context of psychosis, and reflections on process issues. We present a cognitive behavioural model, where affect-related changes are interpreted as an internal threat, driving a maintenance cycle of catastrophic appraisals and safety behaviours. Using this formulation, evidence-based therapy techniques familiar to most readers can then be applied.

It is important for clinicians to consider dissociation. As well as generating new avenues for translational intervention research, we anticipate that the novel insights and specific advice outlined here will be of use to professionals working with dissociation in psychosis (and beyond). Encouragingly, we demonstrate that widely used, evidence-based skills and techniques can be employed to address distress arising from dissociation.

Perinatal obsessive-compulsive disorder (PNOCD) can impact up to one in five individuals in the perinatal period. Whilst effective treatment for PNOCD is available, parents experience barriers accessing this evidence-based psychological therapy. Healthcare professionals’ perspectives on barriers to accessing support are valuable to develop targeted interventions to increase access to support for PNOCD.

This study aimed to prioritise a list of barriers to accessing therapy for PNOCD, in terms of importance and amenability to change, from the perspective of healthcare professionals.

203 healthcare professionals from across primary, community and secondary care services completed a survey where they ranked barriers in terms of importance and amenability to change. Barriers were ranked within clusters and across cluster names; 47 barriers were organised into seven clusters. Rankings were analysed using descriptive statistics and the non-parametric Friedman’s test.

Professionals ranked healthcare professionals’ knowledge and training on PNOCD as the barrier which was most important and amenable to change. Parents’ knowledge and awareness of PNOCD and services, their attitudes to mental health problems, and their attitudes towards healthcare professionals and services were ranked as the second most important and amenable to change.

Professionals view their colleagues’ knowledge and training on PNOCD as the most important barrier impacting parents access to evidence-based therapy for PNOCD. Training for professionals could be targeted to increase access. Parents’ awareness and attitudes surrounding PNOCD, mental health and services were also identified by professionals as an important barrier and is recommended to be targeted to increase access.

Bipolar disorder (BD) has a significant impact on functioning in the absence of acute mood episodes. This has been associated with subsyndromal symptoms, co-morbidities, and emotional dysregulation. The present study aims to evaluate the acceptability and preliminary efficacy of imagery-based cognitive therapy (ImCT) in a French community setting. We were particularly interested in the link between mental imagery and emotional dysregulation as this may clarify the mechanisms involved in the potential efficacy of the therapy and ultimately improve its relevance.

Ten participants underwent ImCT, with weekly assessments of mood fluctuations, anxiety, and emotional dysregulation conducted over 1 month (i.e. pre-therapy, post-therapy and 1-month follow-up). Recovery, post-traumatic stress symptoms and self-compassion were measured at baseline and post-therapy. Attrition rates and satisfaction were measured.

All participants who completed therapy (n=8) reported high levels of satisfaction. Five of them showed reliable individual improvement on emotion dysregulation scores. At the group level, a significant decrease in mood fluctuation with a large effect size was found post-therapy.

ImCT showed good acceptability among participants who completed the study. Importantly, our study is the first to provide an indication that ImCT may alleviate subsyndromal mood symptoms but also emotional dysregulation in individuals with BD. This latter finding is particularly relevant given the scarcity of validated psychosocial interventions targeting emotional dysregulation in BD.

Improved understanding of the cognitive and behavioural processes underpinning panic disorder (PD) in adolescents could improve identification and treatment.

We investigated whether the processes outlined in Clark’s (1986) cognitive model of PD are observed in adolescents with PD, are specific to PD, and predict symptom severity.

We recruited three groups of adolescents (12–17 years): 34 with a PD diagnosis, 33 with another anxiety disorder excluding PD (‘clinical control’), and 34 scoring below the clinical cut-off on a measure of anxiety symptoms (‘community control’). Participants self-reported on measures of PD symptom severity, catastrophic cognitions, bodily sensation fear, and safety-seeking behaviours.

The PD group reported significantly higher levels of catastrophic cognitions and safety-seeking behaviours than both control groups. They reported significantly higher levels of bodily sensation fear compared with the community but not the clinical control group. All process measures positively predicted PD symptom severity across all groups.

We found evidence of catastrophic cognitions and safety-seeking behaviours as PD-specific processes in adolescents which predict symptom severity. Bodily sensation fear also predicted symptom severity. Findings support Clark’s cognitive model of PD in adolescents and suggest that catastrophic cognitions and safety behaviours may be targets for adolescent PD treatment.

Mental imagery plays a key role in the onset and maintenance of psychological disorders, and has become the target of psychological interventions for the treatment of several anxiety-related conditions. However, there are currently no transdiagnostic measures designed to assess the varied dimensions of mental imagery relevant to psychopathology.

To develop and validate a new measure assessing the experiences and appraisals of negative mental imagery.

The initial item pool was generated through a comprehensive literature review and interviews with subject-matter experts. An online community sample provided data for the exploratory (n=345) and confirmatory (n=325) factor analyses.

The new 16-item Negative Mental Imagery Questionnaire demonstrated four subscales (Intrusiveness, Controllability, Beliefs about Mental Imagery, and Realness). Reliability and validity were good to excellent for both the full- and sub-scales.

Appraisals of mental imagery captured by the new measure are consistent with previous research on mental imagery and psychopathology.

Defence behaviours – actions carried out to reduce perceived threat – are an important maintenance factor for persecutory delusions. Avoidance of feared situations and subtle in-situation behaviours reduce opportunities for new learning and are erroneously credited for the non-occurrence of harm; hence inaccurate fears are maintained. In contrast, exposure to feared situations whilst dropping defence behaviours – a key technique of cognitive therapy for paranoia – allows the discovery of new information concerning safety, thereby reducing persecutory delusions.

We aimed to develop for use in research and clinical practice a self-report assessment of paranoia-related defence behaviours.

A 64-item pool was developed from interviews with 106 patients with persecutory delusions, and completed by 53 patients with persecutory delusions, 592 people with elevated paranoia, and 2108 people with low paranoia. Exploratory and confirmatory factor analyses were used to derive the measure. Reliability and validity were assessed.

Two scales were developed: a 12-item avoidance scale and a 20-item in-situation defences scale. The avoidance scale had three factors (indoor spaces, outdoor spaces, and interactions) with an excellent model fit (CFI=0.98, TLI=0.97, RMSEA=0.04, SRMR=0.027). The in-situation defences scale had a 5-factor model (maintaining safety at home, mitigating risk, staying vigilant, preparing for escape, and keeping a low profile) with a good fit (CFI=0.95, TLI=0.94, RMSEA=0.046, SRMR=0.039). Both scales demonstrated good internal reliability, test–retest reliability, and construct validity.

The Oxford Paranoia Defence Behaviours Questionnaire is a psychometrically robust scale that can assess a key factor in the maintenance of persecutory delusions.

The COVID-19 pandemic has had a negative impact on the population’s mental health, particularly for individuals with health anxiety (HA) and obsessive compulsive disorder (OCD). This is in conjunction with a significant change in accessibility of face-to-face psychological services which have had to rapidly adapt to the remote delivery of therapy.

Using a single-arm open trial design, the study aimed to evaluate the effectiveness of evidence-based CBT interventions for HA and OCD delivered via a blend of online therapist consultations interspersed with self-study reading materials. A secondary aim was to evaluate remote training workshops provided to therapists.

Therapists attended three half-day remote workshops after which consecutive participants with HA or OCD were assigned to therapists for treatment. Monthly expert supervision was provided. Patients completed routine outcome measures at each session and an idiosyncratic measure of pre-occupation with COVID-19 at pre- and post-treatment.

Significant and comparable improvements were observed on measures of anxiety, depression and social adjustment from pre- to post-treatment in both the HA (n=14) and OCD (n=20) groups. Disorder-specific measures also showed significant improvements after treatment. The HA group showed greater levels of change on the COVID-19-specific questionnaire. The training workshops were well received by therapists, who valued the monthly supervision sessions.

The study provides support for the effectiveness of the online delivery of CBT for HA and OCD supported by the inclusion of additional self-study booklets.

Substantial experimental research has explored mental contamination – feelings of internal pollution proposed to result from misinterpreting perceived violations. The Mental Contamination Report (MCR) was developed to measure in-the-moment experiences of mental contamination, and has been used in seminal experiments in this domain. However, the MCR has yet to be psychometrically evaluated. The aim of the current study was to evaluate the psychometric properties of the MCR, and if warranted, propose a revised version with improved research utility.

Data for this study were collected as part of a larger experiment examining the impact of moral self-violation on mental contamination. A sample of 150 undergraduate students completed the MCR, Vancouver Obsessional-Compulsive Inventory-Mental Contamination Subscale, and the Vancouver Obsessional-Compulsive Inventory.

The original Emotions Subscale of the MCR demonstrated excellent internal consistency (${\rm{\alpha }}$=0.92) but contained emotions non-specific to mental contamination. We conducted an exploratory factor analysis (EFA) of the emotion items to identify which items load more heavily onto a mental contamination-specific factor. The EFA revealed a two-factor solution, with five items items loading strongly on the mental contamination-specific factor. For the 5-item mental contamination-specific Emotions Subscale, we found excellent internal consistency (${\rm{\alpha }}$=0.90), strong known groups validity, F2,147=63.17, p<.001, ηp2=.46, good convergent validity and mixed results for divergent validity. For the Behavioural Urges Subscale, we found overall mixed psychometric properties.

Based on the results of the psychometric analysis, a revised version of the MCR is proposed.

People experiencing psychosis in acute crisis should be offered cognitive behavioural therapy for psychosis (CBTp); however, there are few crisis-focused CBTp-informed models to underpin formulation development for people experiencing psychosis and receiving inpatient mental health care.

This paper draws on existing CBTp and crisis theories to conceptualise a psychotic crisis from a cognitive behavioural perspective to inform the delivery of therapy in inpatient settings.

Previous literature is reviewed, critiqued, and synthesised. It draws upon relevant crisis and CBTp theories to outline how to best formulate a psychotic crisis.

Drawing on existing research and theory, this paper outlines how a psychotic crisis can develop and be maintained. It highlights the importance of the person’s context including the social, political, and cultural context, interpersonal context and trauma, and previous and current inpatient experience. It then outlines the key triggers, cognitive, behavioural, and emotional components of the crisis, and personal strenghts, values and resources. A crisis-focused CBTp-informed approach is outlined, which can be used to underpin formulation and brief therapy strategies for people experiencing a psychotic crisis. More research is required to explore the efficacy of such therapies.

Distressing mental images are common in people with psychosis. The central role of metacognitive difficulties in psychosis suggests that metacognitive interventions with imagery properties could play a central role in managing distressing mental imagery. A brief imagery-based metacognitive intervention was developed to target the control mechanism of distressing mental images in psychosis.

A fixed baseline case series was designed to investigate whether the intervention was acceptable, feasible and effective.

Eight participants who met criteria for a schizophrenia spectrum diagnosis and experienced distressing future-oriented mental images took part in the case series, which consisted of three phases; baseline, intervention, and follow-up. Symptoms of anxiety, depression, persecutory delusions and schemas were assessed pre- and post-intervention, and qualitative feedback was collected at follow-up.

The metacognitive intervention was feasible, acceptable, and rated as highly satisfactory. One participant dropped out at the baseline phase. No adverse events were reported. Positive change scores with a decrease in symptoms were reported for anxiety, depression, persecutory delusions, and schemas. Tau-U analysis showed positive trends and high effect sizes on mental imagery characteristics at follow-up.

Our findings suggest that it is acceptable and feasible to engage people with psychosis in a brief imagery-based metacognitive intervention and that positive change can be achieved. Further studies are needed to replicate and clarify the findings of our study and develop the evidence base for this intervention.

Specific phobia of vomiting (SPOV), also called emetophobia, is a debilitating condition that shares features with several other anxiety disorders and obsessive-compulsive disorder (OCD). Approximately half of sufferers from SPOV do not fully benefit from current treatment modalities.

Bergen 4-day treatment (B4DT) is a highly concentrated form of exposure and response prevention developed for OCD. This case series reports on the first participants undertaking the treatment for SPOV.

Five female participants underwent the B4DT adapted to SPOV. The Specific Phobia of Vomiting Scale (SPOVI) and Emetophobia Questionnaire (EmetQ-13) were administered pre-treatment, post-treatment, and at 3- and 6-month follow-up. Participants were also shown a 27-minute video portraying vomit-related stimuli of increasing intensity at pre- and post-treatment. The time participants managed to watch the video and their subjective anxiety and nausea were assessed at regular intervals. Reliable and clinically significant change were calculated on SPOVI post-treatment and at 6-month follow-up.

Four of the participants achieved clinically significant change and the fifth reliable improvement, and these results were maintained at 6-month follow-up. The participants watched the vomit-related stimuli video for an average of 10 minutes pre-treatment whereas all completed it post-treatment, experiencing considerably less anxiety. These results were maintained at 6-month follow-up.

The B4DT may be a robust and time-effective treatment format for SPOV with low attrition rates, but further research is needed to verify this.

Despite their considerable public health impact, most people with depressive disorders do not receive treatment due to barriers that limit access to high-quality care. Since the onset of the COVID-19 pandemic, depressive symptoms have sharply increased, and access-to-care barriers were magnified by physical distancing requirements. Videoconferencing is a virtual care modality that reduces access-to-care barriers and can be used to deliver cognitive behavioural therapy (CBT), an evidence-based treatment for depressive disorders. However, it is unclear whether videoconference CBT effectively decreases depressive symptoms, particularly in a group therapy format.

This non-randomized study compared outcomes of group CBT for depressive disorders delivered via videoconference versus in-person.

Data on clinical outcomes (pre- and post-treatment depression, anxiety, and stress symptoms), treatment attendance, drop-out, and patient satisfaction were collected from adult outpatients of a mood disorders clinic who attended 14 weekly group CBT sessions either in-person (pre-pandemic; n=255) or via videoconference (during the pandemic; n=113).

Pre- to post-treatment decreases in depression, anxiety and stress symptoms did not differ between treatment modalities (β=–.01–.06, p>.05). These effects were robust to patient-level factors (i.e. age, sex, co-morbidities, medication use). Moreover, videoconference group CBT was associated with higher attendance (d=0.33) and lower drop-out (53% vs 70% of participants) compared with in-person group CBT.

Videoconference group CBT for depressive disorders appears to be a promising and effective alternative to in-person CBT. However, these findings should be interpreted in light of the study’s non-randomized design and the potential confounding effects of the COVID-19 pandemic.

Hallucinations and other unusual sensory experiences (USE) are common in people with psychosis. Yet access to effective psychological therapies remains limited. We evaluated if we can increase access to psychological therapy by using a brief treatment, focused only on understanding and dealing with hallucinations (Managing Unusual Sensory Experiences; MUSE), delivered by a less trained but more widely available workforce that harnessed the benefits (engaging content, standardisation) afforded by digital technology. The delivery of this in a real-world setting was considered within the non-adoption, abandonment, scale-up, spread, and sustainability (NASSS) framework.

Thirty-eight people with psychosis and distressing hallucinatory experiences were offered sessions of MUSE, delivered by trained and supervised assistant psychologists. MUSE was evaluated within an uncontrolled study conducted in routine clinical practice. Assessments pre- and post-treatment enabled consideration of the impact of the real-world intervention.

There was good uptake (88.4%), and receipt of MUSE (89% received four or more sessions). On average participants received 8.69 sessions. The participants reported significant reductions in voice hearing, paranoia, as well as improved quality of life. The feedback from the participants indicated that MUSE delivered by a less trained workforce was acceptable and beneficial.

In a real-world setting we were able to offer and deliver sessions of a brief psychological psycho-education and coping skills enhancement package to people with distressing USE in the context of psychosis. The delivery of MUSE when considered against the NASSS framework appears to be a good candidate for adoption in services.

Low-intensity psychological interventions are effective for children and young people (CYP) with mental health difficulties and can help bridge the demand–capacity gap. Despite increasing awareness, training and use of low-intensity psychological interventions, it is not yet understood what is being implemented in clinical practice in the UK and the associated evidence base.

This paper presents two studies; first, a national survey (n=102) of practitioners to identify low-intensity psychological interventions currently delivered in practice and second, an exploration of the availability and the strength of empirical support (characterised as ‘gold’, ‘silver’ and ‘bronze’) of low-intensity CBT interventions for CYP.

The first study found a wide variety of interventions being used across different services; 101/102 respondents reported using routine outcome measures. The second study identified 44 different low-intensity interventions, 28 of which were rated as having gold empirical support. However, only 13 of the gold interventions were considered accessible for practitioners and only two were reported being used in routine practice.

These findings highlight that these interventions have been developed and empirically tested, but many are not easily accessible, highlighting the ‘research–practice’ gap in the provision of low-intensity interventions. There is a need for an increase in standardisation of care and accessibility of gold interventions. This paper hopes to begin the process of creating a hub of low-intensity interventions that are accessible and empirically supported to improve equity of access and outcomes of low-intensity psychological interventions for CYP.

Cognitive therapy for PTSD (CT-PTSD) is an efficacious treatment for children and adolescents with post-traumatic stress disorder (PTSD) following single incident trauma, but there is a lack of evidence relating to this approach for youth with PTSD following exposure to multiple traumatic experiences.

To assess the safety, acceptability and feasibility of CT-PTSD for youth following multiple trauma, and obtain a preliminary estimate of its pre–post effect size.

Nine children and adolescents (aged 8–17 years) with multiple-trauma PTSD were recruited to a case series of CT-PTSD. Participants completed a structured interview and mental health questionnaires at baseline, post-treatment and 6-month follow-up, and measures of treatment credibility, therapeutic alliance, and mechanisms proposed to underpin treatment response. A developmentally adjusted algorithm for diagnosing PTSD was used.

No safety concerns or adverse effects were recorded. Suicidal ideation reduced following treatment. No participants withdrew from treatment or from the study. CT-PTSD was rated as highly credible. Participants reported strong working alliances with their therapists. Data completion was good at post-treatment (n=8), but modest at 6-month follow-up (n=6). Only two participants met criteria for PTSD (developmentally adjusted algorithm) at post-treatment. A large within-subjects treatment effect was observed post-treatment and at follow up for PTSD severity (using self-report questionnaire measures; ds>1.65) and general functioning (CGAS; ds<1.23). Participants showed reduced anxiety and depression symptoms at post-treatment and follow-up (RCADS-C; ds>.57).

These findings suggest that CT-PTSD is a safe, acceptable and feasible treatment for children with multiple-trauma PTSD, which warrants further evaluation.

This experimental study investigated whether the trait factors of world assumptions and cognitive flexibility were predictive of levels of attentional bias to threat stimuli, memory integration, and data-driven processing.

An opportunity sample of 74 participants took part in the investigation. Participants viewed a virtual reality film to induce mild distress to mimic processes that can occur in individuals when experiencing a traumatic event. A prospective experimental design was conducted involving measurements at pre-trauma exposure (Time 1), post-exposure (Time 2) and one-week follow-up (Time 3). Self-report measures of world assumptions, cognitive flexibility, and cognitive processing were administered. Eye-tracking equipment was used to assess attentional bias towards threat images, and a free recall task to assess memory integration.

A mixed effects linear model found increased cognitive bias towards trauma-related threat images pre/post-exposure, specifically for a maintenance attentional bias. Significantly greater data-driven processing was observed post-exposure, with greater conceptually driven processing observed at one-week follow-up. No significant findings were observed for memory integration. World assumptions were predictive of increased data-driven processing; the relative use of data-driven to conceptually driven processing; and trait anxiety. Cognitive flexibility was predictive of state anxiety.

These results provide additional support for the role of maintained attention, data-driven processing, and conceptually driven processing in post-trauma reactions as per established cognitive theories of post-traumatic stress disorder. More research is required to fully explore the roles of core beliefs, assumptions and cognitive flexibility in this area.

Firefighters are frequently exposed to traumatic events and stressful environments and are at particularly high risk of depressive symptoms.

The present study aimed to examine the impact of a combined internet-delivered cognitive behavioral therapy (iCBT) and attention bias modification (ABM) intervention to reduce depressive symptoms in firefighters.

The study was a randomized controlled trial carried out in Kunming, China, and involved the recruitment of 138 active firefighters as participants. The intervention lasted for an 8-week duration, during which participants participated in ABM exercises on alternating days and concurrently underwent eight modules of iCBT courses delivered through a smartphone application. Baseline and post-intervention assessments were conducted to evaluate the effects of the intervention.

Results indicated that the combined iCBT and ABM intervention was significantly effective in reducing symptoms of depression compared with the no intervention control group (U=1644, p<0.001, Wilcoxon r=0.280). No significant change was observed in attention bias post-intervention (U=2460, p=0.737, Wilcoxon r=0.039), while a significant increase was observed in attention-bias variability (U=3172, p<0.001, Wilcoxon r=–0.287). This study provides evidence for the effectiveness of the combined iCBT and ABM intervention in reducing depressive symptoms among firefighters. This study provides conceptual support and preliminary evidence for the effectiveness of the combined iCBT and ABM intervention in reducing depressive symptoms among firefighters.

One of the most effective treatments for social anxiety disorder (SAD) is cognitive behavioural therapy (CBT). Prior research indicates group cohesion is connected to treatment success in group CBT for SAD (CBGT). Videoconference CBGT delivery is now common following the COVID-19 pandemic; however, research investigating treatment outcomes and group cohesion in videoconference CBGT for SAD is limited.

The present study aimed to compare group cohesion in videoconference CBGT for SAD to group cohesion in both in-person CBGT for SAD and videoconference CBGT for other anxiety and related disorders. A secondary aim was to compare symptom reduction across all three groups.

Patients completed a 12-week CBGT program for SAD in-person (n=28), SAD via videoconference (n=46), or for another anxiety or related disorder via videoconference (n=100). At mid- and post-treatment patients completed the Group Cohesion Scale Revised (GCS-R), and at pre- and post-treatment patients completed the Social Phobia Inventory (SPIN, only in the SAD groups) and the Depression Anxiety Stress Scales (DASS-21).

Over the course of treatment, all three groups showed a significant increase in cohesion and a significant decrease in symptoms (ηp2 ranged from .156 to .562, all p<.001). Furthermore, analyses revealed no significant difference in cohesion scores between groups at both mid- and post-treatment.

These results suggest that videoconference CBGT for SAD is similarly effective in facilitating cohesion and reducing symptoms compared with in-person delivery. Limitations of the study and implications for treatment are discussed.

There can be heterogeneity in outcomes for individuals receiving targeted CBT for voices (CBTv), and rates of drop-out require investigation. To promote the directed provision of interventions to those most likely to benefit, it is necessary to elucidate the relationship between the factors driving the variability in engagement and response to these interventions.

This study aimed to explore the possible predictors of engagement and outcome for a transdiagnostic cohort of service users receiving Guided self-help cognitive behaviour intervention for VoicEs (GiVE), a brief, manualised CBTv intervention.

This study utilised a quasi-experimental approach to explore and analyse potential predictors of engagement and outcome for service users offered a course of GiVE within routine clinical practice. The sample consisted of 142 service users who were assessed between January 2017 and September 2019 and were offered the GiVE intervention.

The offer of the intervention was accepted by 108 (76%) service users and completed by 74 (52%). Clinically meaningful benefits on the primary outcomes of voice-related distress and recovery were reported by 54% and 48% of the service users who completed the intervention, respectively. For the prediction of engagement, only higher age was found to be associated with increased engagement, particularly for those aged 45–54 and 55–64. For the prediction of outcome, the only clinical measure found to be associated with poorer outcome was an increased anxiety score at baseline.

Engagement with and outcomes from the GiVE intervention may be enhanced with a pre-intervention consideration of age and the reduction of anxiety, respectively.

Motivational Interviewing (MI) has demonstrated significant effects in diverse areas of practice, with over 2,000 controlled clinical trials published. Some criticisms of MI have emerged along the way.

We examine theoretical and methodological critiques of MI.

We discuss three significant theoretical and methodological criticisms of MI: (1) that MI lacks conceptual stability; (2) that MI lacks a theoretical foundation; and (3) that MI is just common factors in psychotherapy.

It is true that definitions and descriptions of MI have evolved over the years. Mastery of MI clearly varies across providers, and when the quality of an intervention is unmeasured, it is unclear what has been trained or delivered. Reliable and valid tools to assess MI fidelity are available but often unused in outcome studies. It remains unclear what levels of proficiency are necessary to improve client outcomes. Some attempts to minimize variability in the delivery of MI appear to have reduced its effectiveness. In respect of the second critique is that MI lacks a theoretical foundation. It is unclear whether and how this is a disadvantage in research and practice. Various theories have been proposed and specific causal chain predictions have been tested. A third critique is that MI is merely common factors found among psychotherapists. The contribution of such relational skills is testable. There are specific aspects of MI related to client language that influence client outcomes above and beyond its relational components.

The critiques reflect important factors to consider when delivering, training, and evaluating MI research.