Mental health clinicians' beliefs about the causes of psychosis: Differences between professions and relationship to treatment preferences

Beliefs About the Causes of Psychosis Among Persons With Psychosis and Mental Health Professionals: A Scoping Review

OBJECTIVE

The beliefs that people with psychosis hold about causes of their illness (causal beliefs) can affect their choice to adhere to treatment and engage in mental health services. However, less is known about causal beliefs of mental health professionals (MHPs) and their impact on treatment adherence and service engagement. This review explored literature focusing on MHPs' causal beliefs and mapped the degree of concordance between their causal beliefs and those of people with psychosis.

METHODS

A systematic literature search of PubMed, Embase, Scopus, PsycINFO, and Applied Social Sciences Index Abstracts and a gray-literature search of PsyArXiv and MedNar yielded 11,821 eligible references. The first author reviewed all titles and abstracts, and the coauthors reviewed 10% (N=1,200).

RESULTS

Forty-two articles were included. Most articles indicated that MHPs tend to endorse biogenetic beliefs (9 of 15 articles assessing MHPs' beliefs, 60%), whereas people with psychosis tend to endorse psychosocial beliefs (16 of 31 articles, 52%) and other nonbiogenetic beliefs (in 8 of 31 articles, 26%). Most studies did not compare causal beliefs of people with psychosis and their treating MHP. Studies varied in design, setting, and measures.

CONCLUSIONS

MHPs and people with psychosis often hold complex views composed of different types of causal beliefs. However, a gap in causal beliefs between these groups appears to exist, which may affect the therapeutic relationship and pose barriers to treatment adherence. Future studies should address this gap by developing interventions that facilitate open communication about causal beliefs to promote treatment alliance and shared decision making.

Voice-hearers' beliefs about the causes of their voices

Despite empirical evidence for multifactorial causes of voice-hearing, people's own beliefs about what caused their voices are understudied. People with distressing voices (n=125) completed measures of trauma, post-traumatic stress disorder (PTSD) symptoms, and beliefs about causality. Most participants reported trauma in the past (97%) and PTSD symptoms were prevalent. Traumatic experiences were the most commonly endorsed causal factor of voice-hearing (64%), followed by distress (62%). Beliefs about biological causes, including drug use (22%), were least endorsed. Those who experienced more traumatic events and more PTSD symptoms were more likely to endorse trauma as a causal factor of voice-hearing (R²=0.38).

Clinicians' views of treatment types for first episode psychosis delivered in a randomised controlled trial (MAPS)

BACKGROUND

Clinicians' treatment beliefs could affect the feasibility of delivering different treatments in a randomised controlled trial (RCT). In MAPS (Managing Adolescent first Episode Psychosis: a feasibility Study), adolescents with first episode psychosis (FEP) were randomly allocated to receive either antipsychotic medication (AP), psychological intervention (cognitive behavioural therapy [CBT] and family intervention [FI]), or both. We conducted a nested qualitative study to investigate clinicians' views of these treatments.

METHODS

Purposive sampling identified seventeen clinicians from CAMHS and Early Intervention services with prescribing responsibilities for 14-18 year olds at three participating MAPS sites. Individual participants were interviewed to examine their views of treatments in the MAPS trial. Interview transcripts were analysed using inductive Thematic Analysis.

FINDINGS

Clinicians viewed the decision to refer adolescents to the MAPS trial as requiring careful clinical judgement. Assessment complexity and diagnostic uncertainty had to be balanced against the urgency for treatment to reduce risk and distress. Underlying influences including duty of care and treatment beliefs underpinned decisions. Clinicians consistently valued AP as the primary treatment for FEP, with CBT and/or FI seen as helpful secondary treatment options. Nevertheless, the potential harms of prescribing AP, or not, to such a young population were highlighted as being of concern in treatment decision-making, and fostered reluctance to refer into a RCT.

INTERPRETATION

The design and delivery of RCTs involving young people experiencing FEP should consider the views of responsible clinicians, recognising that perceived treatment urgency, limitations in diagnostic precision, and existing treatment beliefs may influence trial processes.

FUNDING

NIHR HTA programme (project number 15/31/04).

Public beliefs and attitudes toward schizophrenia and depression in Taiwan: A nationwide survey

Beliefs about and attitudes toward mental illness may be influenced by cultural- or country-specific contexts. Through a national survey, the current study investigated beliefs and attitudes toward people with schizophrenia and depression among the general public in Taiwan. A random-digit-dialing telephone-based cross-sectional survey was administered to Taiwanese adults aged 20-64 years (n = 1600). The data were analyzed through binary logistic regressions to test for differences between these disorders in causal beliefs, stereotypes, emotional reactions, desire for social distance, and help-seeking behavior. The results revealed that respondents were more concerned with biogenetic causal explanations for people with schizophrenia than for those with depression. Significantly more respondents perceived people with schizophrenia as more likely to be unpredictable and violent toward others. A similar trend was observed for the desire for social distance. For both disorders, respondents were significantly more likely to express compassion than to express anger toward the person described in the vignette. Respondents also expressed more desire for social distance from someone like the vignette who have received psychiatric treatment. These findings provide useful directions for the implementation of optimal psychoeducation among such communities. .