Models of shared leadership: Evolving structures and relationships

This article explores potential changes in the power relationships among teachers and principals under four emerging forms of structured teacher involvement in schoolwide decision making: Instructional Leadership Teams, Principals' Advisory Councils, School Improvement Teams, and Lead Teacher Committees. Each organizational model is described in terms of its purpose, its operation, the role of teachers and the principal, and its potential impact on teacher leadership and empowerment. A conceptual framework that views organizational power in terms of access to resources and the ability to obtain cooperation from other actors (Kanter, 1979) is utilized to gauge potential changes in the power of principal and teacher roles under each of these emerging models. The conceptual analysis suggests that models seeking to empower teachers and improve student learning must provide for increased interaction among teachers in curricular and instructional decision making.Presented at the annual meeting of the American Educational Research Association, New Orleans, April 1988.     

The Nonreciprocating Robot: Effects on Verbal Discourse, Social Play, and Social Referencing at Two Years of Age

2-year-old children interacted with a robot in a large playroom while their mother sat quietly in the corner. Identical vocalizations from the robot had very different effects on 3 dimensions of the children's behavior when the vocalizations were embedded in reciprocating and nonreciprocating social structures. The reciprocating robot produced (1) more topic-maintaining verbal dialogue, (2) less physical and more linguistically mediated social play, and (3) gender-specific effects on the children's tendency to visually reference their mother during the play session. The data are discussed with reference to the frequently encountered assumption that reciprocal social structures have an impact on children's behavior when the quantity and other qualitative dimensions of social stimulation are held constant, and with reference to the children's attributions about the robot as a social partner.     

Age-related Asynchrony of Knowledge and Action

Children's ability to act in accordance with rules was assessed in 2 experiments. Experiment I included 66 children, aged 31, 33.5, or 36 months, who performed 2 tasks. In a forced-choice, deductive sorting task, children were told 2 rules (if-then statements) and then required to use the rules to sort items. A knowledge task tested children's knowledge about which rule's antecedent condition held true for each item. Rules were either based on natural categories (e.g., vehicles vs. musical instruments) or ad hoc categories (e.g., things found inside the house vs. things found outside). Children in the 2 younger age groups performed better on the knowledge task than on the sorting task. The 36-month-olds performed equally well on both tasks. In Experiment 2, groups of 12 32.25-month-olds received either the knowledge task, the sorting task, or a mnemonically supported version of the sorting task. The group that received the knowledge task performed better than the other groups, which did not differ. This result undermines the possibility that differential performance on the knowledge and sorting tasks is due to a difference in memory demand. Taken together, the results of Experiments 1 and 2 imply a relatively rapid, age-related change culminating in the ability to execute systematically rules that require access to extant knowledge.     

Lifelong Learning: An Enduring Mandate for Higher Education

Lifelong learning is not only an established psychological fact, it is a compelling political and educational slogan that appeals equally to those concerned with the fulfilment and realisation of human potential, and those who are interested in the pragmatic need to keep up with rapid social and technological change.

A number of recent discussion papers and government reports (see, e.g., Aulich, 1990; Australia Council, 1990; Butler, 1989; Dawkins, 1988; DEET, 1990; Johnson, 1990) have mentioned the concept of lifelong learning as either a cause or an effect of recommended changes in the structure, administration or policy of higher education in Australia.

The purpose of this paper is to examine lifelong learning and to distinguish it from a number of other concepts and practices with which it is frequently associated. The paper then moves on to a consideration of lifelong learning in the Australian context, and in particular in higher education. It is argued that in many instances the rhetoric has outstripped the reality. Yet there are positive signs that notwithstanding the dominant ideology of instrumentalism so prominent at present, there are many initiatives and programs which, taken together, are contributing towards the fulfilment of lifelong learning. It is concluded that Australian higher education institutions are able to realise the ideal of contributing to a learning society, while at the same time being more pragmatic and accountable in aspects of their work.     

A Practical Introduction to Authoring for Computer-Assisted Instruction Part 8: multi-media CAL

Until recently the majority of applications of the computer within conversational computer-assisted learning and computer-based training have utilized a keyboard/ cathode ray tube model of human/computer interaction. However, because of its greater scope, instructional designers are turning increasingly to the use of a workstation model of student interaction with computers. Such a model can lead to the implementation of didactic dialogue that is more natural, more exciting and far more flexible. In this paper we show how such a model forms the basic foundations for multi- media CAL. We then outline some case studies involving the use of this approach and summarize some author languages that have been designed for use in this area.     

Problems Associated with Multi-Media Data Bases

Education is intimately associated with communication, and so may utilize any technology that is able to support a process that enables information to be transferred from one location to another. This paper describes the meaning of the term multi-media data base and presents a model of its potential role in aiding message creation for the purposes of communicating educational material using many parallel channels. Some of the problems associated with the implementation of such systems are outlined.     

Dominance relationships in femaleHerotilapia multispinosa (Pisces: Cichlidae)

Agonistic interactions between all possible pairings of 10 adult female rainbow cichlids (Herotilapia multispinosa) were observed in three round-robin tournaments. Specific behaviors and color patterns were found to characterize winning and losing fish. The outcomes of agonistic encounters were used to construct a hypothetical dominance hierarchy. This hierarchy was consistent over the three tournaments in that (1) the order of animals in the hierarchy remained relatively unchanged and (2) the relationship between the members of a particular dyad tended to remain stable. The latter was especially true for fish of widely different dominance rank.     

African American and European American children in diverse elementary classrooms: social integration, social status, and social behavior

With a sample of African American and European American 3rd- and 4th-grade children (N = 486, ages 8-11 years), this study examined classroom ethnic composition, peer social status (i.e., social preference and perceived popularity as nominated by same- and cross-ethnicity peers), and patterns of ethnic segregation (i.e., friendship, peer group, and cross-ethnicity dislike). African American--but not European American--children had more segregated relationships and were more disliked by cross-ethnicity peers when they had fewer same-ethnicity classmates. African American children's segregation was positively associated with same-ethnicity social preference and perceived popularity and with cross-ethnicity perceived popularity. European American children's segregation was positively associated with same-ethnicity social preference but negatively associated with cross-ethnicity social preference and perceived popularity.     

Requests About Explosives and Illicit Drugs: A New Paradigm

This article addresses what reference librarians should do when patrons ask for information about explosives or dangerous drugs, and explores how reference librarians can possibly deter people from dangerous, unmediated searches by proactively providing information and actual examples on the dangers and risks of making and using these materials.