Consistent maximum likelihood estimation of a unimodal density using shape restrictions

It is well known that the unimodal maximum likelihood estimator of a density is consistent everywhere but at the mode. The authors review various ways to solve this problem and propose a new estimator that is concave over an interval containing the mode; this interval may be chosen by the user or through an algorithm. The authors show how to implement their solution and compare it to other approaches through simulations. They show that the new estimator is consistent everywhere and determine its rate of convergence in the Hellinger metric.     

Chicanas modernize domestic service

The shift from live-in to day work was a step in the modernization of domestic service because it limited the length of the working day and reduced the psychological exploitation involved in the interpersonal relationship between domestics and mistresses. Even the shift to an hourly wage did not end the extraction of emotional labor, however. Interviews with Chicanas employed as private household workers reveal the next step in the evolution of domestic services. The current development is away from wage work, in which labor time is sold, selling a service in which a job is exchanged for a specified amount of money. Chicanas are defining themselves as expert cleaners hired to do general housework. Most supervision and personal services are thus eliminated from the job. Mistress-servant relations are being transformed into customervendor relations, reducing the personalism and asymmetry of employer-employee relationships.An earlier draft of the paper was presented at the 1986 National Association for Chicano Studies, El Paso, Texas. This research was made possible by a grant from the Business and Professional Women's Foundation and a University of California President's Fellowship. I wish to thank Frances Kleinman and Eric Margolis for their helpful comments on this paper     

Severely Traumatized Siblings: A Treatment Strategy

Siblings who have suffered severe trauma and disrupted attachment relate to one another in ways that interfere with individual development, the chance to benefit from connections with adults, the establishment of healthy sibling relationships, and the working through of traumatic experiences. The authors use case examples to illustrate four distinct sibling patterns: absent, adult lockout, half and half, and trauma shield. The authors highlight the importance of recognizing these types and then varying the therapist's treatment stance to pursue five goals. These include suspending problematic sibling relationships to create room for bonding with caring adults, transferring attachment behaviors and impulses to a receptive adult, resuming healthy individual development, forming more adaptive sibling connections, and expressing shared traumatic content.     

The Nursing Profession as a Pressure Group

Within democratic political systems the activities of organized groups, striving to influence government decisions on matters affecting their particular interests, are widely recognized as a significant element in the political process. Members of the nursing profession in Queensland have sought to obtain concessions from governments. The tactics used and the degree of success achieved by nurses, when acting as a pressure group, are described. The organization which represents the interests of Queensland nurses is the state branch of the Royal Australian Nursing Federation (RANF). Until the 1960s the organization did not utilize pressure group activities to any great extent, being satisfied to accept the status quo in matters of nurse training and registration. In the 1960s the RANF decided to take the initiative in seeking changes in the relevant legislation. Initially, the campaign mounted by the organization to achieve its objectives revealed a lack of acceptance by the association of the full implications of pressure group tactics. In the later 1960s when there was more awareness of the fact that the organization was acting as a pressure group, greater success was achieved.     

A direct derivation of the REML likelihood function

The original derivation of the widely cited form of the REML likelihood function for mixed linear models is difficult and indirect. This paper derives it directly using familiar operations with matrices and determinants.     

Methodological Approaches to Assessing Risk Perceptions Associated with Food-Related Hazards

The psychometric approach developed by Slovic and his co-workers has been effectively used to assess risk perceptions associated with different food-related hazards. However, further examination (using questionnaire data and partial correlation techniques) has indicated that technological hazards are highly differentiated from lifestyle hazards, in terms of both hazard control and knowledge about the hazard. Optimistic bias was also seen to vary between hazards. Further research has focused on a particular hazard, genetic engineering. Risk perceptions associated with genetic engineering are underpinned by ethical concern and questions relating to perceived need for the technology, as well as perceptions of risk or harm. However, increasing the specificity of hazard stimuli was found to alter the factor structure of underlying risk perceptions. The utility of preference mapping procedures in determining individual differences in trust in risk regulators is also discussed.