Is Autism a Preventable Disorder of Verbal Behavior? A Response to Five Commentaries

The Analysis of Verbal Behavior - This paper presents a response to five commentaries on our article An Analysis of Autism as a Contingency-Shaped Disorder of Verbal Behavior (Drash &...     

Learning about restoration of urban ecosystems: a case study integrating public participation,stormwater management,and ecological research

Restoration of ecosystem functions in urban environments is made challenging by 1) a public that often lacks understanding of ecological principles, 2) inadequate evidence of the effectiveness of restoration practices, and 3) difficulty integrating social and biophysical factors in studies of urban ecosystems. This paper describes a case study in which potential solutions to these challenges were explored. We facilitated collaborative learning through public participation in the design and implementation of an urban riparian buffer along a headwater stream in a neighborhood park, a process that was informed by ecological research. Learning outcomes were evaluated using surveys and qualitative assessment of discussion. Results indicated that participants’ knowledge about water quality problems associated with urbanization, stormwater, and nonpoint-source pollution increased, familiarity with stormwater management practices increased, and perceptions about the importance of stream ecosystem functions changed. In-stream monitoring of sediment delivery, as well as direct measurements of buffer infiltration capacity, provided early evidence of buffer effectiveness in prevention of sediment inputs to the stream and absorption of runoff from surrounding surfaces. This study provides a useful model for integration of collaborative learning through participation, ecological restoration, and ecological research in an urban setting. Elements deemed essential to success of this model included an opportunity for dialog focused on a specific natural feature, sustained interaction between participants and researchers, opportunities for hands-on participation by urban residents, and flexibility in restoration practice installation.     

Trends in marriage and divorce in Peninsular Malaysia

Summary Median age at marriage for women has risen sharply for each of the three major ethnic groups - Malays, Chinese and Indians, in Peninsular Malaysia since 1957. The sharpest rise has been recorded for Malays and Indians, whose median age at marriage was barely over 17 in 1957. A shortage of potential husbands in the traditionally sanctioned ages contributed to the rise for Malays and Indians, but was probably not the paramount reason; average age differences between the spouses narrowed, but median age at marriage for men actually rose. During the same period, the previously extremely high divorce rates amongst Malays have fallen sharply, though wide inter-state differences remain. The sharp changes in marriage patterns reflect, and in turn are partly responsible for, far-reaching social and economic changes. They have profoundly affected fertility levels and patterns, as well as intra-familial relationships.     

Comparing MCDA Aggregation Methods in Constructing Composite Indicators Using the Shannon-Spearman Measure

Composite indicators have been increasingly recognized as a useful tool for performance monitoring, benchmarking comparisons and public communication in a wide range of fields. The usefulness of a composite indicator depends heavily on the underlying data aggregation scheme where multiple criteria decision analysis (MCDA) is commonly used. A problem in this application is the determination of an appropriate MCDA aggregation method. Of the many criteria for comparing MCDA methods, the Shannon-Spearman measure (SSM) is one that compares alternative MCDA aggregation methods in constructing composite indicators based on the information loss concept. This paper assesses the effectiveness of the SSM using Monte Carlo approach-based uncertain analysis and variance-based sensitivity analysis techniques. It is found that most of the variation in the SSM arises from the uncertainty in choosing an aggregation method. Therefore, the SSM can be considered as an effective measure for comparing MCDA aggregation methods in constructing composite indicators. We also use the SSM to evaluate five MCDA aggregation methods in constructing composite indicators and present the findings.     

An analysis of indirect mortality estimation

In this paper the robustness of Brass's child-survivorship indirect mortality estimation technique is investigated. An analytical method is developed for studying the error or bias caused in indirect mortality estimates by poor data, badly chosen model functions, and specific demographic assumptions that are often violated in practice. The resulting analytical expressions give insight into the rationale of indirect methods, the conditions under which they are robust, and the magnitude of errors that occur when specific assumptions are violated.     

Book Review Mirage: The False Promise of Desert Agriculture. Russell Clemings. San Francisco: Sierra Club Books, 1996. 247 pages; bibliography; index

Population and Environment -     

Fertility Behavior and Interspousal Authority Relationships

Abstract

The most important issue which surrounds attitude theory today is the so called “consistency issue.” It is an issue which focuses on the failure of attitude theory and research to demonstrate the kind of causal relationship between attitudes and behavior which has been traditionally asserted in the logical underpinnings of that theory.

For some time, the critics of attitude theory and research have suggested that the inconsistency between attitudes and acts would not be reduced until attitudes were rooted in the social process within which human behavior occurs. This criticism has been responded to by contemporary attitude specialists who have made notable modifications in theory and research to take account of social variables which influence the assumed relationship between attitudes and behavior.

However, some of the criticisms of attitude theory have gone beyond pointing out the lack of a “socialized” conception of the problem to attack the logical underpinnings of the entire enterprise. While this paper is not a renewal of these criticisms of attitude theory, it is an attempt to identify and explicate a conception of attitudes which is a true sociological alternative to more traditional psychological conceptions.     

A randomized trial of emotion-focused therapy for couples in a training clinic

Forty married couples participated in a randomized trial comparing 8 weekly sessions of emotion-focused therapy (EFT) for couples to a group of couples who were placed on an 8-week waiting list. A composite marital satisfaction score was created from scores on the Dyadic Adjustment Scale, Positive Feelings Questionnaire, and Personal Assessment of Intimacy in Relationships scale. Controlling for pretest scores, participants in the treatment group had significantly higher levels of marital satisfaction after 8 weeks than wait-list participants. Supplementary analyses identified variables associated with gains in therapy and with dropping out of the study.