Instantaneous texture discrimination performance was examined for different texture stimuli to uncover the use of edge-based and region-based texture analysis mechanisms. Textures were composed of randomly placed, short, oriented line segments. Line segment orientation was chosen randomly using a Gaussian distribution (described by a mean and a standard deviation). One such distribution determi...

Using computer simulation, the authors assessed the accuracy of J. E. Hunter, F. L. Schmidt, and H. Le's (2006) procedure for correcting for indirect range restriction, the most common type of range restriction, in comparison with the conventional practice of applying the Thorndike Case II correction for direct range restriction. Hunter et al.'s procedure produced more accurate estimates of bot...

The current study investigated the relationship between intraindividual variability and associative learning in younger and older adults. The authors hypothesized that higher levels of intraindividual variability would be associated with a reduction in the benefits of practice during learning, and that nonoptimal testing times would magnify these effects. Results indicated that older adults sho...

The aim of this study was to describe the physiques of Ironman athletes and the relationship between Ironman's performance, training and somatotype. A total of 165 male and 22 female competitors of the Ironman Switzerland volunteered in this study. Ten anthropometric dimensions were measured, and 12 training and history variables were recorded with a questionnaire. The variables were compared w...

Although it is generally accepted that the spread of a response time (RT) distribution increases with the mean, the precise nature of this relation remains relatively unexplored. The authors show that in several descriptive RT distributions, the standard deviation increases linearly with the mean. Results from a wide range of tasks from different experimental paradigms support a linear relation...

OBJECTIVE To develop a chart to identify non-familial short stature. DESIGN A height chart that adjusts for maternal, paternal, midparental, or sibling height based on the British 1990 height reference. MAIN OUTCOME MEASURE Height between 2 and 9 years of age. RESULTS The chart identifies children whose height is below the familially adjusted 0.4th centile, assuming a correlation of 0.4 b...

Moisture transfer in mixtures of lowand high-moisture content (MC) rough rice (ranging from 9.5 to 18.0% w.b.) was investigated with a single-kernel moisture tester over a period of30 days. The intergranular air attained constant relative humidity corresponding to the mean MC of the mixture within afew minutes ofmixing. About 90% ofthe change in the MC of lowand high-MC kernels occurred within ...

Normative studies of variability in performance by healthy adults on neuropsychological batteries are reviewed. Regarding test score scatter, normative participants often have large discrepancies between best and worst scores. When "abnormality" was defined as a score more than one standard deviation below the mean, in test batteries with at least 20 measures, the great majority of normative pa...

OBJECTIVE To compare (1) the reliability of two expensive and two inexpensive measuring instruments, suitable for use in the community and (2) the reliability of experienced compared with inexperienced observers. DESIGN (1) Ten children aged 5-12 years were each measured three times blindly, and in random order, by two experienced observers using four different portable instruments. (2) Four ...

JOT YAU IS a professor of finance at Mbers School of Business .iiid Economics. Seattle University in Seattle, WA. ,[email protected] T he significant growth of the hedge funds industry in the past decade has heen supplemented by increased allocations to alternative investments by high-net-worth individuals as well as endowments and foundations. In recetit years, there has been a steady shift i...