Brain activity during the encoding, retention, and retrieval of stimulus representations

Studies of delayed nonmatching-to-sample (DNMS) performance following lesions of the monkey cortex have revealed a critical circuit of brain regions involved in forming memories and retaining and retrieving stimulus representations. Using event-related functional magnetic resonance imaging (fMRI), we measured brain activity in 10 healthy human participants during performance of a trial-unique visual DNMS task using novel barcode stimuli. The event-related design enabled the identification of activity during the different phases of the task (encoding, retention, and retrieval). Several brain regions identified by monkey studies as being important for successful DNMS performance showed selective activity during the different phases, including the mediodorsal thalamic nucleus (encoding), ventrolateral prefrontal cortex (retention), and perirhinal cortex (retrieval). Regions showing sustained activity within trials included the ventromedial and dorsal prefrontal cortices and occipital cortex. The present study shows the utility of investigating performance on tasks derived from animal models to assist in the identification of brain regions involved in human recognition memory.     

Enhancing parental reflective functioning: A special tribute to the life and work of Nancy E. Suchman,PhD

Nancy E. Suchman's contributions to the fields of infant mental health, maternal reflective functioning, and attachment-based intervention will have long-lasting impacts. In particular, through the development and dissemination of her intervention program, Mothering from the Inside Out (MIO), she innovated a way of working with mothers with substance use disorders that represented a paradigm shift within the field of addiction. In this introduction to the special issue, written to honor her life and work, we review Nancy's background and briefly describe her academic accomplishments. The special issue contains nine qualitative and quantitative research reports written by Nancy's colleagues and their collaborators. All nine papers pertain to the theme of understanding, measuring, and promoting parents’ capacity for reflective functioning. Four provide findings that advance our understanding of parental reflective functioning. The other five highlight insights from continuing evaluations of MIO, including new adaptations of the model. To introduce the special issue, we provide an overview of the scope of the work done within these projects. Finally, the special issue concludes with two commentaries contributed by Linda Mayes and Arietta Slade, leading scholars within the field who were also Nancy's close colleagues. Both provide insight into Nancy's impact on the field.     

AN EVALUATION OF LABELING-THEN-DOING WITH MODERATELY HANDICAPPED PERSONS: ACQUISITION AND GENERALIZATION WITH COMPLEX TASKS

We conducted two experiments in which moderately mentally retarded persons were trained first to label and then to enter characters into a computer, calculator, or checkbook (label-then-do) within a multiple baseline design. In Experiment 1, 5 young adults were trained to enter statistical programs into computers in an office setting. Following training, all subjects' use of verbal labels and key-entry skills generalized across tasks (programs) and settings (offices and computer terminals). In Experiment 2, 3 junior high school students were trained with self-labeling procedures to complete a key-entry task and to balance a checkbook. The performance of all students generalized across tasks and settings, and the use of labels generalized for 2 of the students. Results are discussed relative to mediated generalization and to establishing verbal control over behavior.     

Expectations and preferences regarding confidentiality in the psychologist-client relationship

Two hundred and fifty-six members of the Australian public were surveyed regarding situations in which a psychologist might breach confidentiality and third parties to whom information might be disclosed. There was strong agreement between respondents' expectations about the way in which psychologists would act, and their preferences regarding how psychologists should act. While respondents supported confidentiality within the psychotherapeutic relationship, they clearly distinguished situations in which, and third parties to whom, disclosure could appropriately occur. Disclosure was expected and preferred when a client revealed a murder (planned or confessed), suicide plans, child abuse, or treason, and where the recipients of the information were colleagues of the psychologist or parents of a client younger than 13 years. Compared to nonparents, parents more strongly supported disclosure regarding illegal drug use and child abuse, and believed that parents should have access to a child's records. In general, respondents' view of the way in which psychologists should treat confidentiality issues were consistent with the guidelines prescribed by the Australian Psychological Society in the Code of Professional Conduct (1986).     

Confidentiality in psychological practice: a decrepit concept?

Although the principle of confidentiality in the relationship between psychologists and client has been vaunted, and is emphasised in the Australian Psychological Society's Code of Professional Conduct (the APS code; 1994), the confidentiality of this relationship is circumscribed by the absence of legal protections, the ethical beliefs of psychologists, institutional practices, and the provisions of the APS code itself. Lack of privilege in judicial proceedings, and statutory obligations to report certain types of behaviour, mandate breaches of confidentiality in some circumstances. Ethical beliefs of psychologists may support disclosure, especially where it is believed that there is danger of serious physical harm to the client or others. Multidisciplinary teams and institutional settings require the exchange of information for optimal delivery of services. Recent amendments to the APS code may require disclosure without the client's consent when a client is believed to be suicidal. Such developments, when considered at all, are typically regarded as exceptions to a general obligation of confidentiality. However, discussion of exceptions presupposes agreement on fundamental principle: the significance of, and rationale for, confidentiality in the psychologist-client relationship. It is argued in this paper that the obligation of confidentiality has been assumed rather than vigorously analysed and empirically explored. A critical examination of this obligation is the most appropriate starting point for the rehabilitation of contemporary principles of confidentiality in the psychologist-client relationship.     

Analysis of clustered data in community psychology: With an example from a worksite smoking cessation project

Although it is common in community psychology research to have data at both the community, or cluster, and individual level, the analysis of such clustered data often presents difficulties for many researchers. Since the individuals within the cluster cannot be assumed to be independent, the use of many traditional statistical techniques that assumes independence of observations is problematic. Further, there is often interest in assessing the degree of dependence in the data resulting from the clustering of individuals within communities. In this paper, a random-effects regression model is described for analysis of clustered data. Unlike ordinary regression analysis of clustered data, random-effects regression models do not assume that each observation is independent, but do assume data within clusters are dependent to some degree. The degree of this dependency is estimated along with estimates of the usual model parameters, thus adjusting these effects for the dependency resulting from the clustering of the data. Models are described for both continuous and dichotomous outcome variables, and available statistical software for these models is discussed. An analysis of a data set where individuals are clustered within firms is used to illustrate fetatures of random-effects regression analysis, relative to both individual-level analysis which ignores the clustering of the data, and cluster-level analysis which aggregates the individual data. Preparation of this article was supported by National Heart, Lung, and Blood Institute Grant R18 HL42987-01A1, National Institutes of Mental Health Grant MH44826-01A2, and University of Illinois at Chicago Prevention Research Center Developmental Project CDC Grant R48/CCR505025.     

If It's Offered,Will They Come? Influences on Parents' Participation in a Community-Based Conduct Problems Prevention Program

This study examined influences on the rate and quality of parent participation in the Fast Track Program, a multi-system, longitudinal preventive intervention for children who are at risk for conduct problems. A theoretical model of the relations among family coordinator characteristics, parent characteristics, the therapeutic engagement between family coordinator and parent, and rate and quality of parent participation was the basis for this study. Family coordinators are the Fast Track program personnel who conduct group-based parent-training sessions and home visits. Participants in this study included 12 family coordinators (42% were African American, 58% European American) and 87parents (55% were African American, 45% European American). The level of therapeutic engagement between the parent and the family coordinator was positively associated with the rate of parent attendance at group training sessions. The extent of family coordinator-parent racial and socioeconomic similarity and the extent of the family coordinator's relevant life experiences were highly associated with the level of therapeutic engagement. The quality, but not the rate, of participation was lower for African American parents. Implications of these findings for preventive intervention with this population are discussed.     

Psychometric properties of the Self-Perception Profile for Children in a biracial cohort of adolescent girls: the NHLBI Growth and Health Study

The National Heart, Lung, and Blood Institute Growth and Health Study (NGHS) is an epidemiologic study of 1,213 Black and 1,166 White girls (ages 9-10) of risk factors for obesity. NGHS used Harter's Self-Perception Profile for Children (SPPC) to measure domain-specific competence and overall self-worth. This report reviews the psychometric properties of the SPPC in this biracial cohort at baseline and Year 3 visits (ages 11-12). Simple structure yielding unique components for each of the SPPC domains was obtained for White but not Black girls, whether analyzed overall or by parental education level. Internal consistency was higher for White girls in both years. The lack of simple structure was reflected in the higher correlations among the subscales for Black girls. The structure and internal consistency improved in Year 3 for Black girls, indicating that the physical appearance and athletic competence domains were not yet fully differentiated at baseline. Readers should be cautious, however, when interpreting the SPPC in young Black girls.     

Implementing a Comprehensive Program for the Prevention of Conduct Problems in Rural Communities: The Fast Track Experience

Childhood conduct problems are predictive of a number of serious long-term difficulties (e.g., school failure, delinquent behavior, and mental health problems), making the design of effective prevention programs a priority. The Fast Track Program is a demonstration project currently underway in four demographically diverse areas of the United States, testing the feasibility and effectiveness of a comprehensive, multicomponent prevention program targeting children at risk for conduct disorders. This paper describes some lessons learned about the implementation of this program in a rural area. Although there are many areas of commonality in terms of program needs, program design, and implementation issues in rural and urban sites, rural areas differ from urban areas along the dimensions of geographical dispersion and regionalism, and community stability and insularity. Rural programs must cover a broad geographical area and must be sensitive to the multiple, small and regional communities that constitute their service area. Small schools, homogeneous populations, traditional values, limited recreational, educational and mental health services, and politically conservative climates are all more likely to emerge as characteristics of rural rather than urban sites (Sherman, 1992). These characteristics may both pose particular challenges to the implementation of prevention programs in rural areas, as well as offer particular benefits. Three aspects of program implementation are described in detail: (a) community entry and program initiation in rural areas, (b) the adaptation of program components and service delivery to meet the needs of rural families and schools, and (c) issues in administrative organization of a broadly dispersed tricounty rural prevention program.     

Are there fundamental differences in the peripheral mechanisms of visceral and somatic pain?

There are some conspicuous differences between the sensibilities of cutaneous and visceral tissues: (1) Direct trauma, which readily produces pain when applied to the skin, is mostly without effect in healthy visceral tissue. (2) Pain that arises from visceral tissues is initially often poorly localised and diffuse. (3) With time, visceral pains are often referred to more superficial structures. (4) The site of referred pain may also show hyperalgesia. (5) In disease states, the afflicted viscera may also become hyperalgesic. In this target article, I consider to what extent differences in the physiology, anatomy, and chemistry of peripheral processing systems explain these different sensibilities. In almost every aspect, there are subtle differences in the properties of the processing mechanisms for cutaneous and visceral information. These may arise because of distinct developmental cues operating in the two domains. Many of the differences between visceral and cutaneous afferents are quantitative rather than qualitative. The quantitative differences, for example in the density of afferent innervation, can be large. The quantitative differences in the numbers of afferents alone may be a sufficient explanation for some aspects of the differential sensibility, for example, the poor localisation of sensation and the apparent insensitivity to focal yet tissue-damaging stimuli. In addition, the few clear qualitative differences apparent in the innervations of the two tissue types may be of special importance. That the encoding of visceral nociceptive events may occur by an intensity mechanism rather than a specificity mechanism could be the key difference in viscerosensory and somatosensory processing.