Computer-based interactive video systems

Computer-controlled interactive video instruction provides an instructional technique that overcomes many of the shortcomings of using the computer alone as an instructional device. Students who have used interactive video modules have been shown to better retain the material presented and to enjoy the course more than students not using the video modules.     

Placing perceptions of politics in the context of the feedback environment, employee attitudes, and job performance

The authors proposed a model suggesting that organizational environments supporting high levels of informal supervisor and coworker feedback are associated with lower employee perceptions of organizational politics. Furthermore, these lowered perceptions of politics were proposed to result in higher employee morale (as reflected in job satisfaction and affective commitment) and, through morale, to higher levels of task performance and organizational citizenship. The proposed mediational model was supported with empirical results from 150 subordinate-supervisor dyads sampled across a variety of organizations. Higher quality feedback environments were associated with lower perceptions of organizational politics, and morale mediated the relationships between organizational politics and various aspects of work performance. These findings suggest that when employees have greater access to information regarding behaviors that are acceptable and desired at work, perceptions of politics are reduced and work outcomes are enhanced.     

Multiple attachment relationships within families: mothers and fathers with two young children

Security of attachment between mothers and fathers and their 2 children was examined in 41 maritally intact families. Strange Situation assessments of attachment security for the younger children (mean age = 1 year 10 months), Attachment Q-sort ratings of the older children (mean age = 4 years 8 months), and ratings of parental caregiving behavior of both children were obtained. Younger and older children developed concordant attachments to both parents. Parents were consistent in their caregiving behavior toward their 2 children. However, parents were not congruent in their attachment to their 2 children. Associations were found between maternal caregiving and attachment only in the younger group. The results support the idea that parental caregiving behavior accounts for only modest portions of the variance in attachment security; evolving attachments integrate developmental inputs from the children and the caregivers in the network of early family relationships.     

Exteroceptive context in tasteaversion conditioning and extinction: odour, cage, and bottle stimuli

Five experiments investigated the extent to which the exteroceptive context, present on a saccharin aversion conditioning trial with rats, controlled the resulting aversion on one-bottle extinction tests and subsequent preference tests. The presence or absence of the specific odour which had been present on the conditioning trial was found not to influence saccharin intake on extinction tests, whereas the presence of the particular compartment in which, and the bottle from which, the saccharin had been consumed greatly suppressed saccharin intake as compared to the absence of these elements. Preference tests, performed in the respective conditioning contexts, showed extinction to be specific to the compartment + bottle context: groups that had extinguished their saccharin aversion in a context different from the conditioning context, retained their aversion in the conditioning context. No such specificity was found for the odour context. However, in the absence of the taste stimulus during the extinction phase, the odour that had been present on the conditioning trial did control the amount of water consumed, whereas the compartment+bottle context did not. Moreover, on preference tests, groups that had consumed water during extinction in the presence of the odour context, evidenced a lesser saccharin aversion than groups not exposed to the odour. The results are interpreted as demonstrating that rats learn about taste, odour, cage and bottle stimuli on a taste-aversion conditioning trial, and that taste and bottle stimuli seem to be the most salient.