Teaching the Rescorla-Wagner model using STELLA-II

Although the Rescorla-Wagner model is widely taught in learning courses, most textbooks present a simplified version that does not contain all of its parameters. On the basis of Rescorla and Wagner 1972) and the Turbo PASCAL program by Lachnit, Schneider, Lipp, and Kimme! (1988), we created a simulation using STELLA-II, an icon-based program by High Performance Systems, Inc. We argue that this simulation facilitates teaching the complete Rescorla-Wagner model. Using trans-switching (Kimmel & Ray, 1978; Lachnit, 1986; Murrin & Kimmel, 1986) as an example, we demonstrate the effectiveness of the STELLA-II version of the Rescorla-Wagner model as a heuristic tool.     

The Impact of Procedural Justice on Opinions of Public Policy: Solid Waste Management as an Example1

This study assessed the applicability of Tyler and Lind's (1992) relational model of authority to the context of local government policies on solid waste management. Tests of the hypothesized relations proposed by Tyler and Lind, accomplished through structural equation modeling, revealed that our data supported the relations between the various constructs of the model. Perceptions of both process control and relational process were found to be positively related to procedural fairness judgments, while procedural fairness judgments were weakly related to evaluations of government entities. Contrary to our expectations, a similar structural equation model test of an extension of the Tyler and Lind model showed that the model constructs were unrelated to respondents' opinions of public policies. The results also indicated that respondents living in communities with different infrastructures and political climates differed slightly in their perceptions of procedural justice and related constructs, but did not differ in their endorsement of the various solid waste management policies.     

A SUPERVISORY STRATEGY TO IMPROVE WORK PERFORMANCE FOR LOWER FUNCTIONING RETARDED CLIENTS IN A SHELTERED WORKSHOP

A multiple component strategy was investigated for aiding staff responsible for supervising production of lower functioning retarded clients on contract tasks in an institution-based sheltered workshop. The strategy was assessed in a combined multi-element, multiple baseline across groups design with a reversal component. Production performance increased during the production supervisory strategy with all 16 clients, with the range of increase varying from a few percentage points to 150% of baseline production. Both the clients and staff (responsible for conducting the research) preferred working under experimental conditions rather than under baseline conditions which approximated those found in “typical” sheltered workshops.     

Sex as a Status Variable in Work Settings: Female and Male Reports of Dominance Behavior

This study shows that sex is an important status variable in occupational settings. The basic hypothesis that males, because of a status prerogative, would be more likely than females to use nonverbal and verbal dominance behaviors, including intimate gestures, toward their opposite sex co-workers was confirmed. Subjects (88 female and 69 male samples from two institutions of higher learning) reported dominance behaviors (a) toward opposite sex co-workers; (b) from opposite sex co-workers; (c) toward opposite sex superiors; and (d) from opposite sex superiors. Analysis of the sexual dominance items revealed that sexual intimacy is expressable along the same continuum as traditional dominance gestures. The hypothesis that sex competes with other status variables was supported. If the sexual dominance patterns explored in this study prove widespread, institutions may wish to provide programs aimed at raising employee awareness of these interactions.     

The effects of situational variations in role-play scenes on assertive behavior

The study was conducted to determine the extent to which variations in the situational parameters of role-play scenes affect subjects' levels of assertiveness. Thirty-six psychology undergraduate students were randomly assigned to one of three role-play conditions that differed in the situation-setting characteristics presented in the scenes: a Difficult condition, designed to inhibit assertive responding; an Easy condition, designed to facilitate assertive responding; and a Neutral condition. Subjects also completed a self-report assertion inventory. Videotapes of the role-played interactions were rated for a variety of component responses. Results indicate that subjects responded differently in the three conditions. Subjects in the Difficult and Neutral conditions were more compliant, and those in the Easy and Difficult conditions were more fluent. It is suggested that failure to specify the situational parameters of role-play scenes may affect the validity of this assessment procedure.This research was supported in part by NIMH Grant, MH28279 to the third author.     

Perceptions of parenting behavior and young women's gender role traits and preferences

This study examines the effect of perceptions of mothers' and fathers' parenting behavior on their college-aged daughter's gender role development. Unlike in previous studies, in this analysis we consider both the gender role traits of young females (their instrumentality and expressiveness) and their gender role preferences (modernity vs. traditionalism) simultaneously. Three alternative empirical models are tested with data from 163 randomly selected college-aged females using analysis of covariance structures in LISREL VII. Findings substantiated the hypothesis that perceptions of earlier parenting behavior exert a substantial influence on gender role developments of children, particularly regarding mothers' influence on the instrumentality and expressiveness of their daughters. Mothers' parenting, measured along the dimensions of encouragement and control, was generally more strongly related to their daughters' gender role traits than was fathers'. Little influence of parenting behavior on daughters' gender role preferences was found.The authors wish to acknowledge Dr. Hyman Rodman for his comments on earlier drafts of this paper.     

Syntactic and semantic processes in aphasic deficits: The availability of prepositions

The availability of a specific category of closed class items (prepositions) was examined in Broca's and Wernicke's aphasia. The role of prepositions was varied (syntactic/semantic) in two tasks: one requiring production of prepositions and the other acceptability judgments. Overall, it was easier to perform the acceptability task than to produce the target item. In the judgment task, Wernicke's aphasics more accurately determined the acceptability of prepositions in their syntactic role than in their semantic role, but Broca's aphasics showed no such difference. In the production task, Wernicke's aphasics again were more likely to produce prepositions which were in a primarily syntactic role. Broca's aphasics, however, failed to produce such syntactically based prepositions. The results suggest that the availability of a given closed class vocabulary form is not merely a function of its class membership but also of its functional role, and this fact serves to distinguish aspects of Broca's and Wernicke's aphasics' deficit.     

Sex-role identity and self-esteem in female graduate nursing students

This study investigated masculinity and femininity characteristics and levels of self-esteem of 96 female graduate nursing students between the ages of 20 and 50. The instruments used were incorporated into a questionnaire which was mailed to each student. Self-esteem was measured by a version of Coopersmith's Self-Esteem Inventory which Good and Good modified to adapt to adult standards. To measure femininity and masculinity, a shortened version of the Bem Sex Role Inventory was used: Subjects rated themselves along a 7-point Likert scale for 10 masculine and 10 feminine traits. The categorical method of scoring by Spence, Helmreich, and Stapp was employed. The students were fairly evenly distributed across the following four categories: low masculine-low feminine; low masculine-high feminine; high masculine-low feminine; and high masculinehigh feminine. The students in the high masculine-low feminine and the high masculine-high feminine categories were found to have a statistically higher mean self-esteem than the students in the low masculine-low feminine and low masculne-high feminine categories. Implications were mentioned regarding the development of a high degree of both masculine and feminine characteristics in nurses.