The histories of autism and Asperger's Disorder (AD), based on original contributions by Kanner and Asperger, are reviewed in relation to DSM-IV diagnostic criteria. Their original articles appear to have influenced the distinction between AD and autism made in the DSM-IV. Based on up-to-date empirical research, however, it appears that AD and autism are not qualitatively distinct disorders, but are different quantitative manifestations of the same disorder. The differences between AD and autism may be a function of individual variability in these areas, not the manifestation of qualitatively distinct disorders. The DSM-IV criteria for AD and autism need to be considered with their historical developments, and based on empirical evidence, the DSM-IV diagnostic criteria may be subject to critical review.

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The relationship between video gaming and gambling was examined in a large cross-sectional sample of 3942 Canadian online panelists who responded to a solicitation recruiting individuals who regularly gambled or played video games. Most past year video gamers reported gambling in the past year (78.5%) and most past year gamblers reported playing video games in the past year (70.7%). However, frequency of involvement in gambling as well as all individual types of gambling was only weakly correlated with frequency of involvement in video games. Problem gamblers and problem gamers were found to have similar demographic features as well as high rates of mental health problems and impulsivity. Some differences did exist, with problem video gamers tending to be younger, somewhat less impulsive, less likely to have a substance use disorder, and more likely to have depression. Despite having similar profiles, overlap between problematic levels of gaming and gambling was modest, with only 10.5% of the 466 problem gamblers also being problem video gamers and 24.1% of the 203 problem video gamers also being problem gamblers. In general, the evidence would suggest that although the risk factors and manifestations of problem gaming and problem gambling are similar, involvement and/or overinvolvement in one is not a strong predictor of involvement and/or overinvolvement in the other.

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The results of a Caltech Submillimeter Observatory (CSO) search for l-C 3 H + , first detected by Pety et al. in observations towards the Horsehead photodissociation region (PDR), are presented. A total of 39 sources were observed in the 1 mm window. Evidence of emission from l-C 3 H + is found in only a single source -the Orion Bar PDR region -which shows a rotational temperature of 178( 13) K and a column density of 7(2) × 10 11 cm −2 . In the remaining sources, upper limits of ∼10 11 -10 13 cm −2 are found. These results are discussed in the context of guiding future observational searches for this species.