More specific pharmacotherapy and psychotherapy reduces the risk of early transition to psychosis in young people at ultra-high risk, although their relative contributions could not be determined. This represents at least delay in onset (prevalence reduction), and possibly some reduction in incidence.

This study examined the perceptions of adulthood among 31 high school students with autism spectrum disorder (ASD). We had two research aims: (1) to report students’ postsecondary expectations in terms of school, work, friendships and living arrangement and (2) to describe how our sample defined adulthood. To better compare our sample’s criteria of adulthood to the criteria traditionally endorsed in secondary schools, we used a directed content analysis approach. Data were derived from a semi-structured interview that questioned students about friendships, activities and the transition to adulthood. The majority of students expected to attain traditional markers of adulthood after high school; however, for some the pathways to achieving these outcomes were narrowly defined and perceived as a rigid, linear process. Independence, maturity and personal responsibility were the most highly endorsed characteristics of adulthood, followed by chronological age and traditional markers. Implications for transition planning and adult services are discussed.

Iodinated contrast media (ICM) are non-mutagenic agents administered for X-ray imaging of soft tissues. ICM can reach µg/L levels in surface waters because they are administered in high doses, excreted largely un-metabolized, and poorly removed by wastewater treatment. Iodinated disinfection by-products (I-DBPs) are highly genotoxic and have been reported in disinfected waters containing ICM. We assessed the mutagenicity in Salmonella of extracts of chlorinated *

Background: A population segment of autistic adults are underidentified due, in part, to historic changes in criteria for diagnosing autism and diagnostic biases related to gender, socioeconomic status, and other individual characteristics such as intellectual functioning. Some of these individuals, described as the ''lost generation,'' may choose to self-diagnose. Although little is known about this population, it is possible that they share similar self-conceptualizations or internalized stigma as their diagnosed counterparts. This study reports on the structural validity of the Autism Spectrum Identity Scale (ASIS) with individuals diagnosed and selfdiagnosed with autism and compares the demographic characteristics, stigma, self-concept, and quality of life of these two groups. Methods: Over 1000 adults diagnosed (n = 893) or self-diagnosed (n = 245) with autism were recruited through organizations serving the autism community to participate in a nationally distributed online survey that included demographic questions and measures for stigma, self-concept, quality of life, and well-being. The diagnosed data set was randomly split with exploratory factor analysis performed on a training data set. Split-half crossvalidation was used to predict the factor structure of the holdout data set. Then, the full diagnosed data set structure was used to determine the generalizability of the factor structure to the self-diagnosed data set. The diagnosed and self-diagnosed were also compared for differences in gender, age, employment status, diagnostic term preference, and factors of self-concept (autism identity and self-esteem), stigma, and quality of life. Results: Factor analysis of diagnosed participants yielded a four-factor structure, consistent with previous research, with strong split-sample cross-validation and good internal consistency. Factor predictions of the selfdiagnosed data set from the diagnosed data set ranged from 0.97 to 1.00 with similar internal consistency. Selfdiagnosed participants were more likely to be older, women, or employed and less likely to be students or prefer the term ''autism'' than those with an autism diagnosis. The groups were remarkably similar in reported stigma, self-esteem, quality of life, and in ASIS factors; both groups reported lower quality of life than the general population. Conclusions: The ASIS demonstrated the same internal structure with both the diagnosed and self-diagnosed samples. The profile of self-diagnosed participants matches the profile hypothesized for the ''lost generation'' and others at risk of being underidentified for autism. Both populations appear to be similarly struggling with employment, stigma, and quality of life. Future research should examine whether self-diagnosed individuals meet criteria for autism or could benefit from interventions, programs, or services serving autism communities.