Idealism or Pragmatism? An Operational Code Analysis of Yitzhak Rabin andShimon Peres

This study quantitatively measured the operational codes of Yitzhak Rabin and Shimon Peres according to the Verbs in Context System (VICS) devised by Walker, Schafer, and Young (1998). Rabin's and Peres's basic propensities regarding the nature and conduct of foreign policy were then compared through analyses of variance, both to each other and across time. Three main trends were found in the results. First, both leaders' conception of their political environment changed over time, from basically conflictual in the 1970s to essentially neutral in the 1990s. Second, the remainder of Rabin's operational code, including a surprisingly strong predisposition to approach politics in a cooperative manner, was generally constant across time. Third, unlike Rabin, several other components of Peres's operational code underwent acute fluctuations, seemingly in response to the perceived different situational context. On the basis of these results and the operational code construct in general, a typology was created that classifies leaders according to their predisposition to pursue either cooperative or conflictual strategies and their level of responsiveness to their political environment.     

Gender,Ethnicity, and Network Characteristics: Variation in Social Support Resources1

While previous research has demonstrated theimportance of social support resources for emotionalwell-being and health, few studies have explored thedeterminants of social support. We explore the effects of gender, ethnicity, other social statuses,and role configurations on informal social networkcharacteristics in an analysis of a U.S. sample ofadults, of which 14% are ethnic/racial minorities.Specifically, we examine the extent to which gender,ethnicity, and social roles influence the structural anddynamic characteristics of social networks.     

Effects of High-Probability Request Sequences on Preschoolers' Compliance and Disruptive Behavior

A high-probability request sequence was implemented with three preschool children with developmental delays within their classroom during typical activities. A multiple baseline design across subjects was used to evaluate the effects of the high-probability request sequence on compliant responding to low-probability requests and the occurrence of disruptive behavior. Results of the study indicate that the use of the high-probability request sequence was effective in increasing compliant responding to low-probability requests delivered by two different trainers for all children. No increases in disruptive behavior were noted as a result of using the high-probability request sequence. When the high-probability request sequence was withdrawn, compliant responding to low-probability requests was maintained for all children across time and in different settings.     

Distortions of depth-order relations and parallelism in structure from motion

Four experiments related human perception of depth-order relations in structure-from-motion dis-plays to current Euclidean and affine theories of depth recovery from motion. Discrimination between parallel and nonparallel lines and relative-depth judgments was observed for orthographic projections of rigidly oscillating random-dot surfaces. We found that (1) depth-order relations were perceived veridically for surfaces with the same slant magnitudes, but were systematically biased for surfaces with different slant magnitudes. (2) Parallel (virtual) lines defined by probe dots on surfaces with different slant magnitudes were judged to be nonparallel. (3) Relative-depth judgments were internally inconsistent for probe dots on surfaces with different slant magnitudes. It is argued that both veridical performance and systematic misperceptions may be accounted for by a heuristic analysis of the first-order optic flow.     

Validity of the Sex-Role Egalitarianism Scale: Two replication studies

To enhance the construct validity of the Sex-Role Egalitarianism Scale (SRES), two replications of earlier validity studies were undertaken. Samples were from several college campuses and primarily Caucasian. In Study 1, multiple regression analyses confirmed a hypothesized curvilinear relationship between scores on the SRES and scores on the MacDonald Sex Role Survey, a measure of gender role ideology regarding women. In Study 2, the expectation that SRES would share a relatively small amount of total variance with both the Femininity/Expressiveness and Masculinity/Instrumentality trait subscales of the Personal Attributes Questionnaire was supported. Both sets of results are consistent with earlier validity research using different measures.Lynda King would like to express her appreciation to the Central Michigan University Research Professorship Award program for its support of the studies reported here. The authors would also like to thank the anonymous reviewers for their thoughtful guidance and suggestions. A previous version of this paper was presented at the annual meeting of the American Psychological Association, Washington, DC, August 1992.     

Gender differences in way-finding strategies: Relationship to spatial ability and spatial anxiety

Sex Roles - Differences between women and men in the self-reported use of two different way-finding strategies were examined in a sample of primarily white middle to lower middle class college...     

LOCAL AND GLOBAL PROCESSES IN VISUAL COMPLETION

In the natural environment, objects are frequently occluded, and people continuously complete partly occluded objects Do local processes or global processes control the completion of partly occluded objects? To answer this question, most previous studies simply asked subjects to draw the completions they "saw" Such drawing tasks are highly subjective, and they provide equivocal results Our studies are the first to use an objective, implicit paradigm (primed matching) to determine the extent to which local or global processes underlie the visual completion of partly occluded objects Our results suggest that global processes dominate perceptual completion, whereas local processes do not play a large role Therefore, local theories of completion, or theories in which local processes dominate, cannot be entirely correct     

Case study: Initiating and maintaining a nonruminative response in an adult male who is profoundly retarded

A 51-year-old male with profound retardation and an 11-year history of rumination was treated using a simple intervention that included shaping, time-out, and stimulus control. An A-B-A-B design was used to evaluate treatment. Results indicated that the mean rate of rumination decreased from an average of 16.1 times per day during baseline to less than once per day at the conclusion of treatment. The potential prosocial effects of eliminating rumination and the implications of using less aversive interventions for serious and potentially life-threatening disorders in individuals with developmental disabilities are discussed.     

The role of three-dimensional depth cues in infants' perception of partly occluded objects

Newborn infants were familiarized to a three dimensional display consisting of a rod which moved behind a central occluder, so that only the top and bottom of the rod were visible. The infants' eyes were 38 cm from the rod and the occluder was 15 cm in front of the rod, a separation intended to ensure that the gap between the two was detected by the infants. On subsequent test trials the infants looked longer at a complete rod than at two rod pieces, suggesting that the hidden unity, or completeness of the rod had not been perceived. In a study by Johnson and Náñez (in press), using computer. generated stimuli, 4 month olds perceived the hidden unity of a similar display presented on a VDU in the complete absence of three. dimensional depth cues. Taken together, these findings suggest that, for these displays, perception of three. dimensional depth cues is not necessary for the detection of the unity of partially hidden objects. It is suggested that age changes in early infancy in the perception of occluded objects may result either from the emergence of abilities to perceive objects from kinematic information or from the emergence of sensitivity to that information itself.     

Verbal and nonverbal maternal controls in hearing mother-deaf child interaction

Investigators of mother-child relations have concluded that mothers of deaf children are more controlling than mothers of hearing children. Excessive maternal control has been linked to inoptimal developmental outcomes, such as child dependence, social immaturity, and submissiveness. In the present study, the verbal and nonverbal controls employed by mothers of deaf preschoolers (3.00–6.75 years) versus mothers of hearing preschoolers (3.00–6.42 years) were evaluated. Subjects were 14 hearing mother-deaf child dyads and 14 hearing mother-hearing child dyads. Each dyad was observed during a 15-minute free-play period and during a 7-minute teaching period. Dependent measures were submitted to appropriate 2 (hearing status) by 2 (task) analysis of variance for repeated measures, followed by post hoc comparisons. The results indicated that the mothers of deaf children: (a) used higher rates of nonverbal controls than the mothers of hearing children, especially during the free-play period; and (b) employed higher rates of verbal controls than the mothers of hearing children during the free-play period, but not during the teaching period. In addition, the interaction tasks exerted differential effects on the two groups of mother-child dyads.