in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...

this study purported to compare and contrast the use of self-mention and evidentials as two mtadiscourse features in opinion columns of persian and english newspapers. the theoretical basis of this study is the idea that metadiscourse features vary across cultural boundaries. for this purpose, 150 persian and 150 english opinion columns were collected based on three factors of topic, audience a...

Introduction: Different approaches had identified different explanations about the causes mental diseases incidence. The biological and psychological approaches believe that it is a physiological stressful conditions or childhood experiences. Whereas, the sociological schools believe that the main factor of these diseases are unequal social structures, social roles, absence of social suppo...

Introduction: Lighting affects many non-visual functions such as Circadian rhythm, alertness, core body temperature, hormone secretion and sleep. The aim of this study was to investigate the effects of lighting on human cognitive and mental performance. Methods: In this systematic review, databases including ISI Web of Knowledge, Scopus, PubMed and Science Direct were searched to access the re...

Introduction: Different approaches had identified different explanations about the causes mental diseases incidence. The biological and psychological approaches believe that it is a physiological stressful conditions or childhood experiences. Whereas, the sociological schools believe that the main factor of these diseases are unequal social structures, social roles, absence of social suppo...

Background and Aim: Military staff are exposed to high levels of stress, and as such, and their mental health has long been an area of focus. The purpose of this study was to investigate and compare mental health promotion programs and strategies used in American, British and Russian military organizations, to those used in Iranian military organizations. Methods: This study was a systematic re...