Random error in additive decompositions of multiattribute utility

Decomposition is a common strategy for dealing with the complexity of multiattribute decision problems. A cognitively demanding task is broken down into tasks requiring simpler, perhaps easier, judgments which can then be aggregated. But individual judgments can be inconsistent in systematic or random fashion and when aggregated there is the possibility of propagation of this inconsistency. In this paper inconsistency in the form of random error is investigated in the context of additive decomposition of multiattribute utility. The process of aggregation of random error is studied and a comparison made with random error in holistic estimates of multiattribute utility. Conditions under which decomposition improves the consistency of the multiattribute utility estimate are presented and discussed.     

Production of graphic symbol sentences by individuals with aphasia: efficacy of a computer-based augmentative and alternative communication intervention

The study employed a single-subject multiple baseline design to examine the ability of 9 individuals with severe Broca's aphasia or global aphasia to produce graphic symbol sentences of varying syntactical complexity using a software program that turns a computer into a speech output communication device. The sentences ranged in complexity from simple two-word phrases to those with morphological inflections, transformations, and relative clauses. Overall, results indicated that individuals with aphasia are able to access, manipulate, and combine graphic symbols to produce phrases and sentences of varying degrees of syntactical complexity. The findings are discussed in terms of the clinical and public policy implications.     

LOEVINGER'S SENTENCE COMPLETION TEST OF EGO DEVELOPMENT: A USEFUL TOOL FOR CROSS-CULTURAL RESEARCHERS

This study examined the validity of Loevinger's ego development model and method from a cross-cultural perspective. Loevinger's Sentence Completion Test was administered to 171 Australian and 110 Indian tertiary students. The results strongly supported Loevinger's claims for the universality of her model.     

Random error in holistic evaluations and additive decompositions of multiattribute utility — an empirical comparison

This paper details the results of an empirical investigation of the random errors associated with decomposition estimates of multiattribute utility. In a riskless setting, two groups of subjects were asked to evaluate multiattribute alternatives both holistically and with the use of an additive decomposition. For one group, the alternatives were described in terms of three attributes, and for the other in terms of five. Estimates of random error associated with the various elicitations (holistic, single-attribute utility, scaling constants, or weights) were obtained using a test-retest format. It was found for both groups that the additive decomposition had significantly smaller levels of random error than the holistic evaluation. However, the number of attributes did not seem to make a significant difference to the amount of random error associated with the decomposition estimates. The levels of error found in the various elicitations were consistent with theoretical bounds that have recently been proposed in the literature. These results show that the structure imposed on the problem through decomposition results in measurable improvement in quality of the multiattribute utility judgements, and contribute to a greater understanding of the decomposition method in decision analysis.     

An empirical investigation of Garnets and Pleck's Sex Role Strain Analysis

This study is an empirical investigation of Garnets and Pleck's conceptual analysis — the Sex Role Strain Analysis — which sought to explain the contradictory findings in regard to the relationship between sex role identity and self-esteem. Garnets and Pleck (Sex Role Identity, Androgyny, and Sex Role Transcendence: A Sex Role Strain Analysis, Psychology of Women, 1979, 3(3), 270–283) argued that, while much of previous research assumed that sex role identity has a direct effect on self-esteem, the relationship between the two is actually moderated by the same-sex ideal and sex role salience. This paper adapted the model by considering the effect of sex role salience at the individual and at the cultural levels. More specifically, the revised model was tested within two societies (India and Australia) that differ markedly in the level of sex role salience at the cultural level. The results revealed that sex role salience at the cultural level is an important moderating variable. In the Indian sample, for example, the relationship between sex role ientity and self-esteem is moderated by individual's perception of the sam-sex ideal. In societies (e.g., Australia) that emphasize individuality, however, the relationship between sex role identity and self-esteem is probably moderated by other variables such as individuals' perception of the image that they desire for themselves. The implications of these findings for sex role identity research are discussed.     

Gender and contextual differences in social responsibility in Thai schools: a multi-study person versus situation analysis

Social responsibility has been linked to the moral development of students, but little prior research has examined how personal and situational variables influence students’ willingness to show care and concern for social issues that reflect higher levels of moral development. We theorised and tested the hypotheses that females would endorse social responsibility to a greater extent than males, and that school/programme context would moderate this relationship. In Study 1, levels of social responsibility were greater for girls than boys and in academic versus vocational high schools, and school type moderated levels of social responsibility for boys. Study 2 replicated the male–female difference in social responsibility, and demonstrated greater differences in social responsibility across university academic programmes for female than male students. These studies expand the understanding of personal versus situational influences on social responsibility and their implications for moral education in schools.     

Comparison of Graphic Symbol Learning in Individuals with Aphasia and Right Hemisphere Brain Damage

This study compared the differences in performance on recognition of graphic symbols across time by individuals with aphasia, individuals with right-hemisphere brain damage, and neurologically normal adults. The subjects, seen individually, learned 40 Blissymbols. The symbols were selected so that the effects of symbol translucency and complexity on the recognition of graphic symbols could be examined. A paired-associate learning paradigm was used to teach the symbol–referent pairs to subjects. The results indicated that individuals with aphasia and neurologically normal adults do not differ significantly in recognition of graphic symbols. However, individuals with right-hemisphere damage recognized fewer symbols compared to individuals with aphasia and normal adults, suggesting that they have difficulty in associative learning of graphic symbols. Additionally, translucency was found to be a potent factor in the recognition of Blissymbols by all groups. The finding that individuals with severe chronic aphasia can learn and retain graphic symbols has significant clinical implications for aphasia rehabilitation.