Literature reports different effects of mood on measures of consumer behavior. Either mood congruence or mood regulation theories serve to explain these effects, though the latter theory is perhaps more sophisticated. This research goes a step further: in a sequence of four studies, the authors...

Methods for detecting influential observations for the Weibull model fit to censored data are discussed. These methods include: one-step deletion diagnostics, influence functions and curvature diagnostics. Results indicate that the curvature diagnostics may be helpful in detecting masking.