K-Ar age determinations of some Miocene-Pliocene basalts in Israel: their significance to the tectonics of the Rift Valley

Thirty samples of Upper Tertiary basalts intruding marine and continental sequences were by the K-Ar method. Four volcanic phases are recorded: (a) 24.8±1.5 Ma of the Raqabat e Na'ame dike in Central Sinai; (b) 20.4±0.7 Ma of basalt intrusions in Central Sinai and the Arava. Some of these are offset by E-W to NE-SW dextral faults of the Central Sinai - Negev Shear Zone; (c) 14.5±0.3 to 4.9±1.3 Ma of basalt flows in the Eastern Galilee and the Coastal Plain; (d) 2.7±0.6 Ma of ‘En Yahav dike. These results contribute to the correlation between Tertiary continental formations from different areas, and put limits on the age of tectonic events, such as folding in the Syrian arc, faulting in the Central Sinai - Negev Shear Zone and shearing along the Jordan Rif

Association of Amygdala Development with Different Forms of Anxiety in Autism Spectrum Disorder

Background: The amygdala is widely implicated in both anxiety and autism spectrum disorder. However, no studies have investigated the relationship between co-occurring anxiety and longitudinal amygdala development in autism. Here, the authors characterize amygdala development across childhood in autistic children with and without traditional DSM forms of anxiety and anxieties distinctly related to autism. Methods: Longitudinal MRI scans were acquired at up to four timepoints for 71 autistic and 55 typically developing (TD) children (∼2.5-12 years, 411 timepoints). Traditional DSM anxiety and anxieties distinctly related to autism were assessed at study Time 4 (∼8-12 years) using a diagnostic interview tailored to autism: The Anxiety Disorders Interview Schedule-IV with the Autism Spectrum Addendum. Mixed effects models were used to test group differences at study Time 1 (3.18 years), Time 4 (11.36 years), and developmental differences (age-by-group interactions) in right and left amygdala volume between autistic children with and without DSM or autism distinct anxieties, and TD. Results: Autistic children with DSM anxiety had significantly larger right amygdala volumes compared to TD at both study Time 1 (5.10% increase) and Time 4 (6.11% increase). Autistic children with autism distinct anxieties had significantly slower right amygdala growth compared to TD, autism-no anxiety, and autism-DSM anxiety groups and smaller right amygdala volumes at Time 4 compared to the autism-no anxiety (-8.13% decrease) and autism-DSM anxiety (-12.05% decrease) groups. Conclusions: Disparate amygdala volumes and developmental trajectories between DSM and autism distinct forms of anxiety suggest different biological underpinnings for these common, co-occurring conditions in autism

The ability of analysts’ recommendations to predict optimistic and pessimistic forecasts

Previous researches show that buy (growth) companies conduct income increasing earnings management in order to meet forecasts and generate positive forecast Errors (FEs). This behavior however, is not inherent in sell (non-growth) companies. Using the aforementioned background, this research hypothesizes that since sell companies are pressured to avoid income increasing earnings management, they are capable, and in fact more inclined, to pursue income decreasing Forecast Management (FM) with the purpose of generating positive FEs. Using a sample of 6553 firm-years of companies that are listed in the NYSE between the years 2005–2010, the study determines that sell companies conduct income decreasing FM to generate positive FEs. However, the frequency of positive FEs of sell companies does not exceed that of buy companies. Using the efficiency perspective, the study suggests that even though buy and sell companies have immense motivation in avoiding negative FEs, they exploit different but efficient strategies, respectively, in order to meet forecasts. Furthermore, the findings illuminated the complexities behind informative and opportunistic forecasts that falls under the efficiency versus opportunistic theories in literature