Robustness of Additive Value Function Methods in MCDM

A simulation model is constructed of choice between a discrete number of non-dominated alternatives. The long-run goals of the decision maker are assumed to be consistent with a hypothetical preference structure which satisfies assumptions of completeness, transitivity and additive independence for an ideal set of criteria. The use of additive value functions to aid the decision maker in this choice is simulated for a variety of contexts and under a number of non-idealities such as the omission of criteria, confounding of criteria and inconsistent responses. It is found that ideal preference orderings are well identified by additive value functions provided that the non-idealities are moderate and that sufficient effort is put into modelling changing marginal values for different levels of performance. One of the potentially most sensitive areas is that of shifts in the decision maker's reference points as a result of the types of preference information asked.     

State resident volunteering and health are unrelated when neuroticism is controlled: Nomothetic evidence using the 50 states of the USA as analytical units

ABSTRACT

This research challenges the claim that engaging in formal volunteering improves health. Using data for the 50 American states pertaining to 2015–2016, multiple regression equations with differing control and entry order demonstrated the capacity of state resident neuroticism to eliminate relations between state volunteering rates and state health outcomes. In Study 1, with state SES, White population percent, urban population percent, and health environment considered and controlled, volunteering accounted for 11.5% of state health variance. However, with neuroticism entered between the demographic controls and volunteering, neuroticism accounted for 18.0% but additional variance accounted for by volunteering was reduced to 0.7%. Similarly, in Study 2, with data for those 65 and older, the results were replicated. It is speculated that higher neuroticism produces social anxiety that discourages volunteering and fosters poorer health at both the individual and the state level for the general population and for those 65 and over.