Reacts to previous article in which Becvar and Becvar contend that ecosystemic model represents counter-cultural movement in mental health field. Reviews each of the concepts presented by Becvar and Becvar, concluding that many effective counselors already function in a manner consistent with the ecosystemic model presented. (NB)

Bronfenbrenner's (1979) concept of human ecology emphasizes the effect of the environment, both physical and psychological, on individual development. Bronfenbrenner's contexts which affect the development of the individual (microsystem, mesosystem, exosystem, macrosystem) can also be defined for the family in an ecological model of family…

This paper is concerned with problems in assessing the behavior of trace substances introduced into natural systems, sampling models of five classes that might be used in the study of contaminants are reviewed. Adaptation of an industrial experimentation method and techniques used in economic geology to ecological sampling is recommended.…

Addresses the influence of cultural and ecological backgrounds, as mediated by the family, on children's achievement. Contrasts models used to explain academic successes and failures of African-American and Asian-American children. (PCB)

This article reviews the psychoeducational, behavioral, and ecological models underlying educational services to students with behavior disorders. Models are compared for their explanatory nature, implications for intervention, and how they address the scientific approach to behavior disorders. (DB)

Reacts to previous article in which Becvar and Becvar contend that ecosystemic model represents counter-cultural movement, turning point, in mental health field. Finds it sad that, to many helping professionals, ecosystemic approach is still considered revolutionary. Hopes that Becvar and Becvar's article will stimulate continued discussion of…

Third stream evaluation, the fusing of the ecological perspective with experimental or quasi-experimental evaluation design, is described. The ecological perspective necessitates that the conceptualization and analysis of a setting and the design of the study emphasize the interdependent relations among organisms, behavior and environment in…

Major consequences of present and additional environmental quantities of DDT pesticide are predictable by mathematical models of transport, accumulation and concentration mechanisms in the Wisconsin regional ecosystem. High solubility and stability produce increased DDT concentrations at high organism trophic levels within world biosphere…

The authors suggest that the aura of authority traditionally placed on educational research and evaluation has been based on an outdated understanding of the scientific enterprise. They outline an alternative view of science which is more ecological and provides more scope and power for evaluating educational programs. They propose a new framework…

Employing the device of a fantasy, a landscape architect demonstrates that the world is an interdependent, interacting biosphere. (Author)

Two approaches for early intervention with Head Start children are described: a child-centered intradynamic approach using one-to-one play therapy, and a family-centered ecological system which works with the family unit and other support agencies. Criteria are discussed for determining the applicability of either modality in individual cases.…

Using an applied ecological model, this study focuses on contextual risk factors of elder abuse. Five levels of environment were used to interpret existing research on risk factors. Configuration of risk factors provides a framework for understanding the intergenerational character of quality of life for older adults, developing recommendations…

The need for a Gestalt Theory of neighborhood development was described in this paper. A model based on scale was developed in which small scale represents an isolated Appalachian who depends upon neighbors and kin and large scale represents a person who has developed a large number of relationships so that he is less dependent upon any one of…

Examines aspects of competitive exclusion, which develops when two species jointly utilize a vital resource that is in short supply. When this occurs, one of the species will eventually eliminate the other from the habitat where their distributions overlap, unless one or both species evolve differences that reduce competition. (JR)