A sign language has emerged among three generations of deaf people and their families in a Bedouin community in the Negev desert. This newly reported case sheds light on the minimal environmental social factors required to generate a language.

The magnitude of the interaction effect in nonlinear models does not equal the marginal effect of the interaction term, can be of opposite sign, and its statistical significance is not calculated by standard software. We present the correct way to estimate the magnitude and standard errors of the interaction effect in nonlinear models.  2003 Elsevier Science B.V. All rights reserved.

The purpose of this study was to quantify real-world highway sign reading behavior while driving at night. Sign reading behavior was assessed using traditional self-report augmented by an in-vehicle eye tracking system. Good agreement was found between eye movement data (last-look distance) and verbal report measures of sign legibility distance (r = 0.9). Significant reductions in legibility di...

Background and Objectives: Safety signs will be useful if they are distinctive and attractive for individuals, and individuals can communicate with them, because they will not be able to identify the risks and actions necessary to avoid the risk if they do not understand properly. Therefore, this study aimed to determine the level of perception of hospital safety signs and rela...

otosclerosis is an otic capsule disorder that leads to progressive conductive and/or sensorineural hearing loss due to stapes footplate fixation and cochlear bone involvement. the disorder is bilateral in 70% of patients and it usually starts between the third and fifth decade. one of its characteristic clinical findings is schwartze sign which refers to a reddish discoloration over the promont...