Martin and Eaves (1977) developed a method for the analysis of genotypic and environmental covariance structure based on the work of J6reskog (1973). Their method is a general approach to the analysis of covariance structure which allows simultaneous testing of hypotheses about the sources and structure of covariation. The method provides maximumlikelihood estimates of genetical and environment...

Researchers often compare groups of individuals on psychological variables. When comparing groups an assumption is made that the instrument measures the same psychological construct in all groups. If this assumption holds, the comparisons are valid and differences/similarities between groups can be meaningfully interpreted. If this assumption does not hold, comparisons and interpretations are n...

The systems approach is a means of studying the properties of things in relation, not just to their components, but also to the ways in which the components interact, both with each other and with their environment. Within this approach, the task of ascertaining causal linkages existing among the variables in soft systems (as against hard systems) is more complex as these are often messy and th...

Information commitments’ include both a set of evaluative standards that Web users utilize to assess the accuracy and usefulness of information in Web-based learning environments (implicit component), and the information searching strategies that Web users use on the Internet (explicit component). An ‘Information Commitment Survey’ (ICS), consisting of aforementioned components, was developed. ...

The author aims at studying the influence of comments and recommendation on online shopping behaviours. With 285 study subjects, the author used experimental research design to study comments and recommendation system on online shopping experience, online shopping satisfaction, online shopping intention and items chosen. The data is analyzed by SPSS 15.0 and LISREL 8.8. The results show that co...

Difficulties in defining and understanding the antecedents and consequences of e-government service quality have stymied the design of efficacious e-government websites. This study thus presents a working definition of e-government service quality that bridges the gap between MIS and marketing literatures. We then explore the delineation between service content and delivery quality as potential...

This study uses Monte Carlo simulation to compare three relatively popular techniques, with findings that run counter to extant suggestions in MIS literature. We compare multiple regression, Partial Least Squares and LISREL under varying sample sizes (N = 40, 90, 150, and 200) and varying effect sizes (large, medium, small and no effect). The focus of the analysis was on determining how frequen...

BACKGROUND When determinants of nutrition guidance practices for primary care physicians (PCPs) are identified, the key question remains: what is the mechanism of action? This knowledge is essential in order to understand how PCPs practice nutrition guidance. METHODS Mail questionnaires (result of focus-group discussions and in-depth interviews) were sent to a nationwide random sample of 1,00...