Background: Methamphetamine psychosis (MAP) symptomatology has been described as indistinguishable from that of schizophrenia (SZ), yet research comparing these two disorders on specific psychotic symptoms such as schneiderian first-rank symptoms (FRS) is lacking. We aimed to determine and compare the occurrence and associations of FRS in patients diagnosed with MAP and with SZ. Sampling and Method: Data from SCID-I interviews performed on patients with either a diagnosis of SZ or MAP were compared. We calculated the prevalence of different FRS between MAP and SZ patients and used logistic regression to assess the association between FRS and diagnosis. Results: 102 patients were included in the study (MAP = 33, SZ = 69). Thought broadcasting occurred significantly more often in SZ (42%) than in MAP (24.2%) patients (adjusted OR = 3.02; 95% CI: 1.12-8.15; p = 0.028), while auditory hallucinations (voices conversing) were significantly higher in MAP (48.5%) than in SZ (20.3%) patients (adjusted OR = 0.27; 95% CI: 0.10-0.66; p = 0.004). However, there was no significant difference in the occurrence of one or more FRS in MAP and SZ, with most FRS showing overlap. Conclusions: We found that first-rank auditory hallucinations were more prevalent in MAP, whereas first-rank delusions of thought broadcasting were more prevalent in SZ. However, there was a substantial overlap in MAP and SZ for most FRS. This is consistent with the finding that FRS may have limited diagnostic specificity and that there is significant overlap in the symptoms of MAP and SZ. Future research into the neurobiology of delusions and hallucinations needs to take FRS into account.

No reviews to date have summarized the views of parents on the functional challenges and/or strengths of their children with autism spectrum disorder. We set out to perform a scoping review aiming (a) to identify and collate global results to provide a broad description of parental perspective of functioning research and (b) to summarize these using the International Classification of Functioning Disability and Health–Child and Youth version framework. The International Classification of Functioning Disability and Health provides a language to describe the functional skills of an individual with a health condition in terms of their body structures, body functions, activities and participation, their environmental and personal factors. Given the influence that context has on functioning, and the potential impact of economic status on availability of resources, we were specifically interested to compare perspectives from high-income countries and low-/middle-income countries. Two researchers conducted a comprehensive search of English peer-reviewed studies published between 1990 and June 2016. Articles were accessed and summarized using thematic analysis. Meaningful phrases were extracted from key findings and linked to second-level International Classification of Functioning Disability and Health–Child and Youth categories following international linking rules. Thirty-three studies were identified of which only six originated from low/middle-income countries ( n = 6/33, 18%). Two studies compared perspectives from low-/middle-income countries and high-income countries ( n = 2/33, 6%). Functional themes from high-income countries included a range across the International Classification of Functioning Disability and Health–Child and Youth bio-psychosocial framework while functional themes from low-/middle-income countries were predominantly focused on environmental factors. We propose further research should consider a systematic comparison of high-income and low/middle-income countries across functional categories to get a more accurate impression of the impact of context on functioning. Lay abstract No paper to date has summarized parents’ views on the functional challenges and/or strengths of their children with autism spectrum disorder. In this review we set out to perform a scoping review aiming to (a) find and compare existing research from around the globe on parental perception of functioning and (b) summarize results from these papers using the International Classification of Functioning Disability and Health–Child and Youth version framework. Since we know that the place and circumstances we live in can have a significant influence on our functioning in daily life, we were specifically interested in comparing perceptions from high-income countries and low-/middle-income countries. Two researchers conducted a comprehensive search of English studies published between 1990 and June 2016. Papers were summarized and key findings were linked to International Classification of Functioning Disability and Health–Child and Youth categories. Thirty-three studies were identified, of which most were conducted in high-income countries ( n = 25/33, 76%) with only six studies in low/middle-income countries ( n = 6/33, 18%). Two studies compared views from low/middle-income and high-income countries ( n = 2/33, 6%). Functional themes from high-income countries included a range across the International Classification of Functioning Disability and Health–Child and Youth framework while functional themes from low-/middle-income countries were mostly focused on environmental factors. It was difficult to directly compare studies from low/middle-income and high-income countries because they investigated and discussed such different parts of functioning. We suggest that future research should use an approach that will allow researchers to directly compare functional categories in order to get a more accurate impression of the impact of context on functioning.

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