Aims Recent empirical studies investigating "study addiction" have conceptualized it as a behavioral addiction, defined within the framework of work addiction. This study is the first attempt to examine the longitudinal relationship between study addiction and work addiction. Methods The Bergen Study Addiction Scale (BStAS), the Bergen Work Addiction Scale (BWAS), and the Ten-Item Personality I...

A meta-analysis of 51 twin and adoption studies was conducted to estimate the magnitude of genetic and environmental influences on antisocial behavior. The best fitting model included moderate proportions of variance due to additive genetic influences (.32), nonadditive genetic influences (.09), shared environmental influences (.16), and nonshared environmental influences (.43). The magnitude o...

This paper presents information on Japan's contribution to reputable epidemiologic journals as compared to other leading countries. Ten journals in the field of epidemiology with high impact factors were selected. Articles published in these journals during the period between 1991 and 2000 were searched for the authors' affiliation using Medline database. We found that Japan contributed only 1....

This mixed-methods study examined barriers to and facilitators of street children's drug use cessation in Eldoret, Kenya utilizing a cross-sectional survey and focus group discussions with a community-based sample of street-involved children and youth. The primary objective of this study was to describe factors that may assist or impede cessation of drug use that can be utilized in developing s...

The goal of the present study was to investigate the relation of hours of overtime work to cigarette consumption and addiction to cigarette, which was measured by the heaviness of smoking index. The subjects were 571 male daily smokers who responded to a cross-sectional survey of municipal employees of a Japanese city office, in which smoking was permitted in designated areas. Those who engaged...

BACKGROUND Genetic association studies are generating much information, usually in the form of single nucleotide polymorphisms in candidate genes. Analyzing such data is challenging, and raises issues of multiple comparisons and potential false-positive associations. Using data from a case-control study of bladder cancer, we showed how to use hierarchical modeling in genetic epidemiologic studi...

BACKGROUND The impact of mental disorders among homeless people is likely to be substantial in low income countries because of underdeveloped social welfare and health systems. As a first step towards advocacy and provision of care, we conducted a study to determine the burden of psychotic disorders and associated unmet needs, as well as the prevalence of mental distress, suicidality, and alcoh...

Scientific study of genetic contributions to chronic antisocial behavior has stemmed from many lines of research in recent years. Genetic research involving twin, family, and adoption studies have traditionally been used to compare the health and behavior outcomes of individuals who share the same environment or hereditary lineage; several of these studies have concluded that heredity plays som...

behavior refers to the actions made by organisms in conjunction with their environment, which includes the other systems or organisms around as well as the physical environment. lots of types of behavior exist such as conscious or unconscious, voluntary or involuntary and overt or covert. childhood has a remarkable role on formation of human behavior in his later life which already has been pro...