The effects of alternatives on the salience of reward allocation norms

In a dyadic bargaining situation there is considerable evidence that the alternative outcomes of the bargainers (if they cannot reach agreement) have important effects on bargaining outcomes. Under the assumption that situational factors affect the nature of the relation between the alternatives of the bargainers and bargaining outcomes, the effects of two factors were assessed: the relative size of the reward to be negotiated (excess of prize minus alternatives) and the magnitude of the difference in the alternatives of the two bargainers. Using college students as subjects, the predictions of two models were also contrasted: the equal excess model and Shapley-w. The relative size of the prize did not have a significant effect on the accuracy of the two models, but the magnitude of the difference in alternatives had marked effects. The results also suggest that the Shapley-w model may be more accurate when the bargainers are relatively inexperienced and cooperatively oriented, whereas the equal excess model may be more accurate when the bargainers are relatively sophisticated and competitively oriented.     

Breakdowns in flexible use of information: Intelligence-related differences in transfer following equivalent learning performance

Groups of retarded and nonretarded children were investigated as they learned three rules underlying problems adapted from the Raven Progressive Matrices Test: rotation, imposition, and subtration. The interest was in evaluating group differences in the ease with which the original set of rules was learned and the flexibility with which these rules were transferred to modified contexts. In the case of either learning or transfer, the metric of performance was the amount of aid, specifically the number of computer-generated graduated hints, needed for each subject to solve the problems. The groups were matched on their entering competence to deal with the rules under scrutiny, and also on mental age. No group differences were obtained as the subjects learned the original set of rules. However, on subsequent occasions when required to make flexible use of those rules, clear group differences emerged; and those differences increased as the similarity of the training and test contexts decreased. The results were seen as consistent with theories that emphasize transfer flexibility as one potential source of individual and comparative differences in intelligence.     

The recall and use of belief statements as bases for judgments: Some determinants and implications

When people are asked to report their beliefs in a (target) statement, they may search memory for other, “informational” propositions that bear on its validity, and may use their beliefs in these propositions as bases for their judgments. Several factors were hypothesized to affect the particular propositions that subjects are likely to recall under such conditions. Subjects first familiarized themselves with a list of informational and target propositions. Then, they reported either their beliefs in these propositions or their attitudes toward them. In a second session 1 week later, they recalled as many of the propositions as they could. Both informational and target statements were better recalled when the informational propositions were unlikely to be true. In addition, the target statements were better recalled when the informational propositions associated with them had unclear implications for their validity. Recall of one proposition was more likely to cue the recall of the other when subjects had previously reported belief in the target proposition (rather than attitudes toward it). However, it was more likely to occur when subjects had reported attitudes toward the informational proposition (rather than beliefs in it). The effects of these variables were interpreted in terms of their mediating influence on the strength of association between the informational proposition and both (a) the target proposition and (b) contextual and environmental cues in the situation where target beliefs are reported.     

Effects of alternatives in coalition bargaining

A critical factor in bargaining and coalition formation is the alternative outcomes of the bargainers if an agreement cannot be reached. In some situations bargainers have individual alternatives while in other situations their alternatives must be negotiated with others. The purpose of this study was to contrast the effects of one-person and two-person alternatives on coalition outcomes. The second purpose of the study was to contrast the predictions of four theories of coalition formation: bargaining theory, equal excess model, Shapley value, and a special case of equity theory. The results indicate that one-person alternatives enhance the bargaining strength of the stronger players more than two-person alternatives. The predictions of the equal excess model and the Shapley value were more accurate than the predictions of bargaining theory and equity theory. However, the greater accuracy of the equal excess model and the Shapley value may be restricted to situations in which the bargainers have one-person rather than two-person alternatives.     

Incidental learning in preschool children as a function of level of cognitive analysis

Preschool children's recall and clustering of organized lists of pictures were examined under deliberate instructions to remember or in incidental learning situations. The incidental tasks either required comprehension (categorization, or a rating of pleasantness-unpleasantness) or were formal orienting tasks involving processing in terms of physical features.Explicit instruction to remember and formal incidental instructions did not differ, and both lead to poorer performance than the comprehension activities. Categorization, whether accompanied by explicit instructions to recall, or occurring in the context of a meaningful activity, was no more efficient than categorization in and for itself. With children as with adults, it is the activity of the children which determines depth of processing and subsequent retention, not the intent to remember per se.     

Self-punitive behavior with changing percentages of reinforcement: The proper role of discrimination

Past research on self-punitive behavior has been interpreted as supporting a theoretical éxplanation based on a vicious circle rather than a discrimination hypothesis. Using rats, Melvin (1964) found that self-punitive behavior is not reduced when discrimination is aided by changing the percentage of shock trials from acquisition to extinction. This past research is inconclusive because it is based on a misinterpretation of what is the critical discrimination for extinction, namely the new response-punishment contingency. Using humans, the present study provides evidence that subjects can and do discriminate the change in percentage, but continue to show self-punitive behavior until they make the discrimination that responding results in shock rather than escape.     

Maintenance and generalization of trained metamnemonic awareness by educable retarded children

The majority of educable retarded children (young group, MA 6; old group, MA 8) required to estimate their memory span was found to be unrealistic estimators. Following training in span estimation the older subjects improved under both explicit and implicit feedback conditions, while younger children only benefited from explicit feedback. Three posttests of the effects of training revealed long-term (1-year) maintenance of training for older subjects but younger subjects showed post-test improvement only on an immediate test. While long-term maintenance was found for older subjects, generalization to similar span-estimation tests was not found. The utility of training metamnemonic knowledge which does not generalize was questioned and alternate training procedures were proposed.     

Causes of racial and socioeconomic differences in cognitive tests

Correlations among profiles of means based upon 75 cognitive variables from Project TALENT are presented for groups defined by race, socioeconomic status, sex, area of the country, and grade in high school. Sex makes by far the largest contribution to differences in shape of profiles. Race and socioenconomic status, in turn, make much larger contributions to differences than grade and area. Sex differences in shapes of profiles are a function primarily of race and, to a lesser extent, of social class. Race differences are larger than socioeconomic differences and the former, in particular, are also a function of sex. Black males differ more from white patterns than black females. There is lack of substantial overlap in the causes of race and socioeconomic differences in shape of cognitive profiles.