Using aggregate data from the General Social Survey (GSS), 1974-1996, Lynn (1998) claims that the Black-White intelligence difference in the United States has not been narrowing over time. We replicate Lynn's analysis and challenge his conclusion by identifying several methodological problems. By analyzing changes in Black-White differences in the GSS vocabulary test across survey years, rather...

The numerical analysis of spatial point distributions has interested academics for many years. A very early work that resulted in the famous Moran’s I statistic was that by Moran (1948). An early important collection of work on general spatial analysis is that edited by Berry and Marble (1968). The development of spatial point analysis theory is illustrated by such later books by Cliff and Ord ...

purpose: to evaluate demographics and therapeutic outcomes of patients with third nerve palsy who had been treated between 1999 to 2009 at labbafinejad medical center. methods: in this retrospective study, we evaluated 52 patients with third nerve palsy who had been referred to labbafinejad medical center over a ten-year period. results: in this retrospective study, subjects who had been treate...

echinococcus granulosus is considered the major cause of human hydatid cysts. usually the duration of cyst formation is 10-20 years. this period shortens significantly upon rupture of a primary cyst. the literature describes low incidence of primary involvement of ovary as a site of hydatid cyst formation. our case is the first report on ovarian hydatid cyst in iran. a 60-year-old woman was pre...

BACKGROUND Free bowel perforation is one of the indications for emergency surgery in Crohn's disease. It is generally accepted that 1-3% of patients with Crohn's disease will present with a free perforation initially or eventually in their disease course. OBJECTIVES To evaluate the incidence and treatment results of free perforation in patients with Crohn's disease and, based on our experienc...

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Urolithiasis is common and is becoming more prevalent worldwide. This study assessed the chronological trends in clinical and urinary metabolic features over 20 years in Korean urolithiasis patients. We performed a retrospective analysis of 4,076 patients treated at our clinic from 1996 to 2015. Urinary metabolic data and stone analysis data were available for 1,421 and 723 patients (34.9% and ...

The ability to store different insect stadia for prolonged periods provides considerable flexibility and ability to conduct experiments properly. Therefore, studies were undertaken to determine the effect of storage temperature and duration on viability of eggs of Helicoverpa armigera (Hübner). The percentage egg hatch and incubation period were significantly (P=0.01) influenced by egg age, sto...

To assess the frequency of involuntary psychiatric hospitalizations from 2001 to 2008 and to determine associated clinical and socio-demographic characteristics, a retrospective cohort study was conducted. Adult admission data were collected from a university hospital in Brazil. Hospitalizations were classified as voluntary (VH) or involuntary (IH). Groups were compared using chi-square test fo...