Time-varying risk The case of the American computer industry

A bivariate GARCH-in-mean model for individual stock returns and the market portfolio is designed to model volatility and to test the conditional Capital Asset Pricing Model versus the conditional Residual Risk Model. We find that a univariate model of volatility for individual stock returns is misspecified. A joint modelling of the market return and the individual stock return shows that a major force driving the conditional variances of individual stocks is the history contained in the market return variance. We find that a conditional residual risk model, where the variance of the individual stock return is used to explain expected returns, is preferred to a conditional CAPM. We propose a partial ordering of securities according to their market risk using first and second order dominance criteria.     

The roles of service encounters, service value, and job satisfaction in achieving customer satisfaction in business relationships

Along with variables like the service process, perceived service value and customer satisfaction, job satisfaction of service employees plays a vital role in customer evaluation of service result. However, there has been little in-depth research into the nature of this relation, in particular in the context of B2B relations. In the sphere of an organization providing financial intermediation services to the banking sector and on the basis of a literature review, hypotheses are developed which establish the mediator role of service value and the moderator role of job satisfaction of service employees when delimiting customer satisfaction. Reliability and validity analysis give satisfactory results and our conclusions establish firstly that service encounter directly and significantly affects perceived service value which is the final antecedent to customer satisfaction and secondly, that the level of employment satisfaction moderates its effect on service value.