Quota vs positional power in four-person apex games

In coalition formation experiments, which coalitions will form and how players in coalitions will allocate their jointly gained rewards are typically predicted as a function of the players' relative power. In this paper, we isolated two logically independent sources of a player's power: the player's contribution to the rewards obtainable by coalitions of which he may be a member (“quota power”), and the number of distinct coalitions which a player may join (“positional power”). The separation of the two types of power is clearly shown in apex games, where a single player (Apex) attempts to lure any of the other players (Base) from the coalition of all Bases. A series of four-person computer-controlled apex and nonapex characteristic function games, varying with respect to the relationship of quota power to positional power, were played by 15 quartets of male players. Quota power was strongly manifested in all outcome measures, while positional power appeared only as a bias toward equal allocations of reward when coalitions among players of equal positional power formed. Neither of two social psychological theories that are applicable, pivotal power and weighted probability theory, predicted coalition frequencies. In a test of five solution concepts, the competitive bargaining set predicted payoff allocations better than either of the two aforementioned theories, the kernel, or an equal-split model.     

Training school psychologists in neuropsychological assessment: Current practices and trends

Directors of school psychology programs at the Master's, sixth-year and doctoral levels were surveyed as to their program's degree of emphasis in neuropsychological screening and assessment. Despite variability according to program level, directors identified a need for training in these areas. This was particularly evident at the doctoral level, where greater flexibility exists in designing a student's program of studies. The results of this survey support the notion that training in neuropsychological screening and assessment techniques is appropriate in the preparation of specialists in the area of school psychology.     

Instructional ecology and academic responding time for students at three levels of teacher-perceived behavioral competence

Thirty third and fourth grade students, ages 8-10 years, were observed systematically over two entire school days to examine the nature of instruction and academic responding time for students at varying levels of teacher-perceived behavioral competence. Data were recorded on six categories in 10-sec intervals. While the amount of time spent in active academic responses (about 45 min in a typical school day) did not differ significantly between groups, it was found that students perceived to be lower in behavioral competence spent more time engaged in certain inappropriate behaviors and received more teacher disapproval. Yet, students grouped on the basis of teachers' perceptions of their behavioral competence did not differ on the majority of instructional or student responding variables. Findings related to the relationship between responding times and achievement also are presented. Implications of findings for understanding the classroom ecology for students exhibiting behavior problems are discussed.     

Stochastic PERT networks as models of cognition: Derivation of the mean,variance, and distribution of reaction time using Order-of-Processing (OP) diagrams

It is frequently assumed that the mental activity which leads to a given response is made up of separable components or processes. One or more of the processes are assumed to contribute to the time required to respond. Computation of the mean, variance, and distribution of the reaction time is relatively straightforward when all processes are arranged in series or parallel. However, such is not the case when the processes have complex arrangements. A solution to a useful special case of the above problem is proposed. Specifically, it is shown that simple computations yield closed form expressions for the mean, variance, and distribution of reaction time when the processes can be arranged in a stochastic PERT network and when the durations of individual processes are sums of mutually independent, exponentially distributed random variables. The method of solution relies on the construction of an Order-of-Processing (OP) diagram from the original PERT network representation of behavior.     

Self-monitoring in communicative interactions: Social cognitive consequences of goal-directed message modification

The hypothesis was examined that previously demonstrated message modification and its subsequent social cognitive effects would be more characteristic of high than low self-monitors. Subjects first read an essay describing a stimulus person and were then requested to communicate a referential message concerning him to a listener who supposedly either liked (positive audience condition) or disliked (negative audience condition) the stimulus person. Subjects were subsequently given, after both a brief and long delay interval, a reproduction, impression, and attitude measure. The results indicated that high self-monitors were more likely to modify their message in a manner that was evaluatively consistent with their listener's attitude. In addition, this message modification had the predicted social cognitive consequences in that it affected the high self-monitor's subsequent impressions of (but not necessarily attitude toward) the target person. The results suggested that the responses obtained from high self-monitors in many experimental contexts may themselves be the results of a self-monitoring strategy. The implications of these results for research examining the effects of “self-monitoring” are discussed.     

The heroic motive: Some experimental demonstrations

The appearance of heroic motives in interpersonal relations is examined. Three experiments were conducted to test the general hypothesis that witnessing the victimization of a partner would impel young men to incur costs in order to confront the transgressor. In each experiment, either the individual, his partner, or an anonymous other was insulted. Experiments 1 and 2 revealed that individuals were most willing to confront the insulter when their female partners (Experiment 1) or their male teammates (Experiment 2) were victimized. That pattern occurred despite evidence indicating that the most negative affective reactions were experienced by individuals who had been directly insulted. Experiment 3 revealed that individuals were also more willing to perform a subsequent altruistic act in response to the victimization of their partners than when they or an anonymous other person had been victimized. Taken together, the results indicated that heroic motivations in response to the victimization of a partner were distinguishable from other more negatively oriented processes that were aroused in response to self-victimization by the insulter.     

College-bound girls and science careers: Perceptions of barriers and facilitating factors

Student perceptions of barriers, facilitating factors, and information needs related to the consideration of careers in science and technology were investigated with a nationwide sample of talented high school senior women (N = 1017). Data were collected through a mailed questionnaire as part of a broader National Science Foundation project. Results of the study suggest that relatively few girls choose careers in science and technology because: They have doubts about combining family life with a science career; they lack information about steps in preparing for a science career; they believe influential adults; and they see few examples of the important role women can play in science. The data describing the students' perceptions of facilitating factors and information needs suggest that encouragement from family, access to role models, extra help and encouragement from science teachers, and information about careers in science, including the steps involved in preparation, might be influential in helping change perceptions of barriers to careers in science and technology.     

The effects of a model's success or failure on subsequent aggressive behavior

It was of interest in the present study to examine the influence of both aggressive and nonaggressive models who are successful or nonsuccessful in reducing aggression from an aggressive opponent. Male and female subjects viewed a same-sexed model interact with an aggressive opponent in a reaction time task. Half the subjects observed an aggressive model while the remaining subjects observed a nonaggressive model. For half the subjects the model was successful in reducing the aggressiveness of the opponent. Results indicated that both the model's behavior and the consequences to the model (success/nonsuccess) were important determinants of subsequent aggression by the subject. Results are discussed in terms of current research and theory in aggression control.     

Creativity: A complementary relationship between information demand and success at problem solving

Creativity, intelligence, and problem-solving tasks that varied the explicitness of problem definition and the format for an acceptable solution were administered to 100 subjects. Creativity and intelligence tasks were described as different problem-solving tasks. Two hypotheses that distinguished between concepts of creative and intelligent problem solving were presented and supported. First, the syntactical hypothesis stated that the format of an acceptable solution would define the factor structure of the problem-solving tasks more parsimoniously than the explicitness of the problem definition. The factor structure was interpreted by the type of acceptable solution format. Second, the strategic hypothesis stated that information demanded to define a problem and success at problem solving would interact. Information demanded and success at problem solving did interact producing a complementary relationship with dimensions of creativity but not intelligence. Thus, syntactical and strategic distinctions between creativity and intelligence were obtained.