Latent factors are variables that cannot be observed directly but can be inferred from a set of observable variables. For example, in psychology, bad conduct (latent factor) can be measured by how ...

The basics of variation - means and variances are considered, followed by description of i) the tracing rules of path analysis and ii) matrix representation of path models. The discussion is ...

Occupational and Environmental Medicine (OEM) is an international peer reviewed journal concerned with areas of current importance in occupational medicine and environmental health issues throughout ...