Cross-national comparisons of the prevalence of mental disorders have relied on lay-administered interviews scored using complex diagnostic algorithms. However, this approach has led to some paradoxical findings, with more vulnerable countries showing lower prevalence, and its appropriateness for cross-national comparisons has been questioned. This study used an alternative method involving simple questions from social surveys to assess the prevalence of specific depression and anxiety symptoms, and investigated their association with national indicators of human development, quality of government, mental health resources, and mental health governance.

The study used data on the prevalence of three symptoms indicating depression or anxiety: sadness, worry, and unhappiness. These data were taken from the Gallup World Poll (142 countries) and the World Values Survey (77 countries). National characteristics examined covered indicators of human development (income, life span, education, gender equality), quality of government (human freedom, perceptions of corruption), mental health resources (per capita numbers of psychiatrists, mental health nurses, psychologists, and social workers), and mental health governance (whether there is a national mental health plan and a mental health law).

All the human development and quality of government indicators, and some of the mental health resource indicators, were strongly associated with a lower prevalence of symptoms.

Populations of nations with higher human development, quality of government, and mental health resources have better mental health when measured by the prevalence of specific symptoms.

The prevalence of common mental disorders has not declined in high-income countries despite substantial increases in service provision. A possible reason for this lack of improvement is that greater willingness to disclose mental disorders might have led to increased reporting of psychiatric symptoms, thus masking reductions in prevalence. This masking hypothesis was tested using data from two trials of interventions that increased willingness to disclose and that also measured symptoms. Both interventions involved Mental Health First Aid (MHFA) training, which is known to reduce stigma, including unwillingness to disclose a mental health problem.

A cross-lagged panel analysis was carried out on data from two large Australian randomised controlled trials of MHFA training. The first trial involved 1643 high school students in Year 10 (mean age 15.87 years), who were randomised to receive either teen MHFA training or physical first aid training as the control. The second trial involved 608 Australia public servants who were randomised to receive either eLearning MHFA, blended eLearning MHFA or eLearning physical first aid as the control. In both trials, willingness to disclose a mental disorder as described in vignettes and psychiatric symptoms (K6 scale) were measured pre-training, post-training and at 12-month follow-up.

Both trials found that MHFA training increased willingness to disclose. However, a cross-lagged panel analysis showed no effect of this change on psychiatric symptom scores.

Greater willingness to disclose did not affect psychiatric symptom scores. Because the trials increased willingness to disclose through a randomly assigned intervention, they provide a strong causal test of the masking hypothesis. It is therefore unlikely that changes in willingness to disclose are masking reductions in prevalence in the population.

Expert-consensus guidelines have been developed for how members of the public should assist a person with a mental health problem or in a mental health crisis.

This review aimed to examine the range of guidelines that have been developed and how these have been implemented in practice.

A narrative review was carried out based on a systematic search for literature on the development or implementation of the guidelines.

The Delphi method has been used to develop a wide range of guidelines for English-speaking countries, Asian countries and a number of other cultural groups. The primary implementation has been through informing the content of training courses.

Further work is needed on guidelines for low- and middle-income countries.

A.F.J. is an unpaid member of the Board of Mental Health First Aid International (trading as Mental Health First Aid Australia), which is a not-for-profit organisation.

The aim of the current study was to carry out a national population-based survey to assess the proportion of people disclosing mental health problems in a variety of settings. A further aim was to explore respondent characteristics associated with disclosure.

In 2014, telephone interviews were carried out with 5220 Australians aged 18+, 1381 of whom reported a mental health problem or scored highly on a symptom screening questionnaire. Questions covered disclosure of mental health problems to friends, intimate partners, other family members, supervisors or other colleagues in the workplace, teachers, lecturers or other students in the educational institution, health professionals and others in the community. Other than for intimate partners or supervisors, participants were asked whether or not they told everybody, some people or no one. Multinomial logistic regression was used to model the correlates of disclosure in each setting.

For friends and family, respondents were more likely to disclose to some people than to everyone or to no one. In most other domains, non-disclosure was most common, including in the workplace, where non-disclosure to supervisors was more likely than disclosure. Disclosure was associated with having received treatment or with support in all settings except healthcare, while it was only associated with discrimination in two settings (healthcare and education).

Disclosure of mental health problems does not appear to be linked to discrimination in most settings, and is typically associated with receiving support. Selective or non-disclosure may be particularly critical in workplaces, education and healthcare settings.

Findings that describe the mental health risk associated with non-heterosexual orientation in young and middle-aged adults are from cross-sectional designs or fail to discriminate homosexual and bisexual orientations. This study examines the mental health risk of homosexual and bisexual orientation over an 8-year period.

Participants were from the age-cohort study, the Personality and Total Health Through Life Project, were observed twice every 4 years, and aged 20–24 (n = 2353) and 40–44 (n = 2499) at baseline.

Homosexual orientation was unrelated to long-term depression risk. Risk for anxiety and depression associated with homosexual and bisexual orientations, respectively, were attenuated in fully-adjusted models. Bisexual orientation risk associated with anxiety was partially attenuated in fully-adjusted models.

Non-heterosexual orientation was not a major risk factor for long-term mental health outcomes. Instead, those with a non-heterosexual orientation were more likely to experience other mental health risk factors, which explain most of the risk observed amongst those with a non-heterosexual orientation.

An inherent prerequisite to mental health first-aid (MHFA) is the ability to identify that there is a mental health problem, but little is known about the association between psychiatric labelling and MHFA. This study examined this association using data from two national surveys of Australian young people.

This study involved a national telephonic survey of 3746 Australian youth aged 12–25 years in 2006, and a similar survey in 2011 with 3021 youth aged 15–25 years. In both surveys, respondents were presented with a vignette portraying depression, psychosis or social phobia in a young person. The 2011 survey also included depression with suicidal thoughts and post-traumatic stress disorder. Respondents were asked what they thought was wrong with the person, and reported on their first-aid intentions and beliefs, which were scored for quality of the responses.

Accurate labelling of the mental disorder was associated with more helpful first-aid intentions and beliefs across vignettes, except for the intention to listen non-judgementally in the psychosis vignette.

Findings suggest that community education programmes that improve accurate psychiatric label use may have the potential to improve the first-aid responses young people provide to their peers, although caution is required in the case of psychosis.

Emerging evidence suggests that psychiatric labels may facilitate help seeking in young people. This study examined whether young people's use of accurate labels for five disorders would predict their help-seeking preferences.

Young people's help-seeking intentions were assessed by a national telephone survey of 3021 Australian youths aged 15–25. Respondents were presented with a vignette of a young person portraying depression, depression with suicidal thoughts, psychosis, social phobia or post-traumatic stress disorder (PTSD). They were then asked what they thought was wrong with the person, and where they would go for help if they had a similar problem.

Accurate psychiatric label use was associated with a preference to seek help from a general practitioner or mental health specialist. Accurately labelling the psychosis vignette was also associated with a preference to not seek help from family or friends.

Findings add to the emerging evidence that accurate psychiatric labelling may facilitate help seeking for various mental disorders in young people, and support the promise of community awareness campaigns designed to improve young people's ability to accurately identify mental disorders.

A 1995 Australian national survey of mental health literacy showed poor recognition of disorders and beliefs about treatment that differed from those of health professionals. A similar survey carried out in 2003/4 showed some improvements over 8 years.

To investigate whether recognition of mental disorders and beliefs about treatment have changed over a 16-year period.

A national survey of 6019 adults was carried out in 2011 using the same questions as the 1995 and 2003/4 surveys.

Results showed improved recognition of depression and more positive ratings for a range of interventions, including help from mental health professionals and antidepressants.

Although beliefs about effective medications and interventions have moved closer to those of health professionals since the previous surveys, there is still potential for mental health literacy gains in the areas of recognition and treatment beliefs for mental disorders. This is particularly the case for schizophrenia.

Subthreshold depression is common, impairs functioning and increases the risk of major depression. Improving self-help coping strategies could help subthreshold depression and prevent major depression.

To test the effectiveness of an automated email-based campaign promoting self-help behaviours.

A randomised controlled trial was conducted through the website: www.moodmemos.com. Participants received automated emails twice weekly for 6 weeks containing advice about self-help strategies. Emails containing general information about depression served as a control. The principal outcome was depression symptom level on the nine-item Patient Health Questionnaire (PHQ-9) (trial registration: ACTRN12609000925246).

The study recruited 1326 adults with subthreshold depression. There was a small significant difference in depression symptoms at post-intervention, favouring the active group (d = 0.17, 95% CI 0.01–0.34). There was a lower, although non-significant, risk of major depression in the active group (number needed to treat (NNT) 25, 95% CI 11 to ∞ to NNT(harm) 57).

Emails promoting self-help strategies were beneficial. Internet delivery of self-help messages affords a low-cost, easily disseminated and highly automated approach for indicated prevention of depression.

Although mental health information on the internet is often of poor quality, relatively little is known about the quality of websites, such as Wikipedia, that involve participatory information sharing. The aim of this paper was to explore the quality of user-contributed mental health-related information on Wikipedia and compare this with centrally controlled information sources.

Content on 10 mental health-related topics was extracted from 14 frequently accessed websites (including Wikipedia) providing information about depression and schizophrenia, Encyclopaedia Britannica, and a psychiatry textbook. The content was rated by experts according to the following criteria: accuracy, up-to-dateness, breadth of coverage, referencing and readability.

Ratings varied significantly between resources according to topic. Across all topics, Wikipedia was the most highly rated in all domains except readability.

The quality of information on depression and schizophrenia on Wikipedia is generally as good as, or better than, that provided by centrally controlled websites, Encyclopaedia Britannica and a psychiatry textbook.

Few randomised controlled trials (RCTs) have examined potential preventive agents in high-risk community populations.

To determine whether a mental health literacy intervention, the promotion of physical activity, or folic acid plus vitamin B12 reduce depression symptoms in community-dwelling older adults with elevated psychological distress.

An RCT with a completely crossed 2 × 2 × 2 factorial design: (400 mcg/d folic acid + 100 mcg/d vitamin B12v. placebo)×(physical activity v. nutrition promotion control) × (mental health literacy v. pain information control). The initial target sample size was 2000; however, only 909 adults (60–74 years) met the study criteria. Interventions were delivered by mail with telephone calls. The main outcome was depressive symptoms on the Patient Health Questionnaire (PHQ–9) at 6 weeks, 6, 12 and 24 months. The Clinicaltrials.gov registration number is NCT00214682.

The drop-out rate was low (13.5%) from randomisation to 24-month assessment. Neither folic acid + B12 (F(3,856) = 0.83, P = 0.476) nor physical activity (F(3,856) = 1.65, P = 0.177) reduced depressive symptoms at any time point. At 6 weeks, depressive symptoms were lower for the mental health literacy intervention compared with its control condition (t(895) = 2.04, P = 0.042).

Mental health literacy had a transient effect on depressive symptoms. Other than this, none of the interventions significantly reduced symptoms relative to their comparator at 6 weeks or subsequently. Neither folic acid plus B12 nor physical activity were effective in reducing depressive symptoms.