Georgia State University

About: Georgia State University is a education organization based out in Atlanta, Georgia, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 13988 authors who have published 35895 publications receiving 1164332 citations. The organization is also known as: GSU & Georgia State.

EcoScale, a semi-quantitative tool to select an organic preparation based on economical and ecological parameters

Abstract: A novel post-synthesis analysis tool is presented which evaluates quality of the organic preparation based on yield, cost, safety, conditions and ease of workup/purification. The proposed approach is based on assigning a range of penalty points to these parameters. This semi-quantitative analysis can easily be modified by other synthetic chemists who may feel that some parameters should be assigned different relative penalty points. It is a powerful tool to compare several preparations of the same product based on safety, economical and ecological features.

Using FACETS to model rater training effects

Abstract: This article describes a study conducted to explore differences in rater severity and consistency among inexperienced and experienced raters both before and after rater training. Sixteen raters (eight experienced and eight inexperienced) rated overlapping subsets of essays from a total sample of 60 essays before and after rater training in the context of an operational administration of UCLA’s English as a Second Language Placement Examination (ESLPE). A three-part scale was used, comprising content, rhetorical control, and language. Ratings were analysed using FACETS, a multi-faceted Rasch analysis program that provides estimates of rater severity on a linear scale as well as fit statistics, which are indicators of rater consistency. The analysis showed that the inexperienced raters tended to be both more severe and less consistent in their ratings than the experienced raters before training. After training, the differences between the two groups of raters were less pronounced; however, significant diffe...

The Modified Checklist for Autism in Toddlers: A Follow-up Study Investigating the Early Detection of Autism Spectrum Disorders

Abstract: Autism spectrum disorders (ASD) often go undetected in toddlers. The Modified Checklist for Autism in Toddlers (M-CHAT) was used to screen 3,793 children aged 16–30 months from low- and high-risk sources; screen positive cases were diagnostically evaluated. Re-screening was performed on 1,416 children aged 42–54 months. Time1 Positive Predictive Value (PPV) was .36 for the initial screening and .74 for the screening plus follow-up telephone interview; values were similar for Time2 PPV. When separating referral sources, PPV was low for the low-risk sample but acceptable with the follow-up telephone interview. Children with ASD from the low-risk and high-risk samples were highly similar. Results indicate that the M-CHAT continues to be a promising instrument for the early detection of ASD.