Multicriteria approval: application of approval voting concepts to MCDM problems

Multicriteria decision making (MCDM) methods generally require information that is difficult and expensive to obtain. It is shown in this paper that given an ordering of criteria by importance, and whether each alternative is above the average evaluation of the alternatives for each criterion, considerable information can be extracted concerning the overall rankings of the alternatives. This is done by recognizing the similarity between criteria in MCDM, and voters in social choice theory. Multicriteria approval, proposed in this paper, is an MCDM adaptation of approval voting which can be used to classify decisions into one of several categories, depending on whether, and the manner in which, a superior alternative can be identified. An exhaustive examination of all possible decision situations of tractable size is made to measure the applicability of multicriteria approval, and the approach is demonstrated in an industrial procurement case. In addition to requiring minimal information from a decision maker, multicriteria approval satisfies several desirable criteria for MCDM techniques. © 1998 John Wiley & Sons, Ltd.     

Social approval and helping

An experiment was conducted to examine the role played by social approval as an incentive for helping behavior. After filling out the Marlowe-Crowne Social Desirability Scale, 95 female undergraduates were asked to make donations to a research fund under either public or private conditions. The following predictions, derived from social learning theory, were supported: (a) more money is donated under public conditions than under private conditions (p < .01), (b) more money is donated by individuals high in need for approval than those low in need for approval (p < .05), and (c) the effect of need for approval on donating is greater under public conditions than under private conditions (p < .05).     

Need for approval and counseling outcomes

The intent of this study was to determine the effects of a clients' need for approval on the outcomes of counseling. The expectation was that clients who have a high need for approval by others would cooperate more with the counseling process and would more often be successful in the sense of being rehabilitated. The Marlowe-Crowne Social Desirability Scale was administered to 167 applicants at a state rehabilitation agency immediately after the initial interview. It was hypothesized that successfully rehabilitated clients would obtain significantly higher social desirability scores than those clients who were not successful. The results confirmed the hypothesis at the .01 level of significance.     

Structural equation modeling of approval voting data

The method of approval voting is a commonly used voting procedure in which each judge selects a subset of the alternatives. By postulating that the random utilities associated with the choice options in approval voting elections follow a multivariate normal distribution under the Thurstonian framework, Regenwetter, Ho, and Tsetlin (2007) attempted to integrate the normative theories and individual variabilities in modeling social behavior. However, their approach is limited to only three alternatives, due to computational intractability as the number of alternatives increases. In this article, we reparameterize extensions of their models under the structural equation modeling framework and propose the use of limited information methods for estimating model parameters. As a result, we are able to extend their previous approach to the analysis of approval voting data with any number of alternatives. Two applications are presented to illustrate the usefulness of such an approach.     

Predictors of friend approval for romantic relationships

Three studies (1 correlational and 2 experiments) applied the investment model to explain social network approval for others' romantic relationships. Study 1 supported the prediction that friends' perceived satisfaction and perceived alternatives were predictive of their approval for target relationships, while perceived investments was not a significant predictor. Studies 2 and 3 employed experimental manipulations of perceived satisfaction to test its causal impact on relationship approval, and in these studies, perceived satisfaction was a significant predictor of relationship approval. Taken as a whole, these findings supported the prediction that perceived relationship satisfaction is a causal factor influencing friends' approval of target romantic relationships.     

Public approval of suicide: a situational analysis

Using four national surveys conducted in 1977, 1978, 1982, and 1983, this study examined public opinions on suicide in four situations: incurable disease, bankruptcy, family dishonor, and being tired of living. The results indicated that suicide in case of incurable disease was approved by slightly less than 43%, being tired of living by about 13%, and the other two situations by 7%. It was found that respondents with attributes of higher education, lower religiosity, and higher commitment to freedom of expression were more likely to consider suicide as acceptable. Future implications for research suggest not only an assessment of attitudes toward suicide in different situational contexts, but also assessment of individual intentions for the situations considered in this study.     

Social desirability, approval and public good contribution

Behaviour in public good experiments is usually attributed partly to rational self-interest and partly to social norms and preferences. This paper examines if sensitivity to social desirability affects public good contribution and in what way. A pre-experimental measure of social desirability (SDS17) was used to match partners in a two-person public good game. Half the participants received experimenter approval based upon their investment. Contrary to predictions, the highest public good investment was by low social desirability participants in the approval condition. Social desirability was not positively related to pro-social behaviour. We consider its relation to experimental and social conformity.     

Moral approval of aggressive acts: A preliminary investigation

A questionnaire was used to investigate 1) the approval of various kinds of aggressive behaviour under different specified circumstances and 2) the arousal of feelings of aggression in imagined situations. In addition, an attitude test was presented which discriminated between the two highest of Kohlberg's levels of moral reasoning [1969]. The subjects were a very varied group of 83 adults (aged 17–68 years) from municipal evening courses in Finland. Aggression was most approved when it was given altruistic purpose. Self-defense was rated as the second highest justification for aggression. Aggression was found least legitimate when the reasons were emotional (drunk, rage). The justification of some types of aggressive behaviour were dependent on the conditions under which they occurred, whereas others appeared independent. Killing and torture were the most disapproved kinds of aggressive behaviour. Another's attack was the most powerful instigator of feelings of aggression, whereas frustration seemed relatively unimportant. Females approved of emotional expressions of aggression to a greater extent than did males. The moral test did not correlate with approval of aggression in general, but a couple of more specific predictions about the effects of level of moral reasoning on attitudes to socially sanctioned forms of aggression were tentatively confirmed.