Micro-position effects in visual short term memory

Short-term memory for visually presented eight-digit numbers was tested in a forced recall, read-and-dial task. The digits were presented non-grouped or grouped in 2+2+2+2 or 2+3+3 digit formats. Spatial grouping enhanced memory performance and produced local discontinuities in the serial position curves related to grouping format. These micro-position effects are explained in terms of the relative spatial distinctiveness of individual digits.     

The power of a place: Opening the college classroom to people with serious mental illness

Presented the structure and implementation of a university-based practicum course on social relationships for people with serious mental illness and college undergraduates. Grounded in an ecological view of social settings, cooperative learning models of education and mutual help principles, the practicum was designed to create a collaborative classroom setting where undergraduates and people with serious mental illness could both develop and enhance their own interpersonal skills and social network ties. The practicum demonstrates how a university can use its resources to help address community needs while simultaneously enhancing its mission of teaching and research. The role of social context in creating collaborative relationships among participants and the use of the university as a community resource are discussed.     

Differences in judgments of learning difficulty

Academically successful and less successful fifth graders were asked to make judgments about the ease of understanding and remembering various sentences and were given the opportunity to attempt to remember some of them before being asked to judge new sets of sentences. The results of the first experiment indicate that, at the beginning of the experiment, the successful students were much more likely than their less successful peers to realize that sentences expressing arbitrary relationships were more difficult to remember. These differences became even greater after students were given the opportunity to attempt to remember some of the sentences they had judged initially. The memory performance of the successful students also improved as they became more familiar with the experimental task, but the performance of the less successful students did not. The results of the second experiment showed that less successful students who had received appropriate training were able to use information about the arbitrariness of relationships as the basis for their judgments of learning difficulty. The training also facilitated their ability to remember. Implications of these findings are discussed.     

Mixtures of conditional mean- and covariance-structure models

Models and parameters of finite mixtures of multivariate normal densities conditional on regressor variables are specified and estimated. We consider mixtures of multivariate normals where the expected value for each component depends on possibly nonnormal regressor variables. The expected values and covariance matrices of the mixture components are parameterized using conditional mean- and covariance-structures. We discuss the construction of the likelihood function, estimation of the mixture model with regressors using three different EM algorithms, estimation of the asymptotic covariance matrix of parameters and testing for the number of mixture components. In addition to simulation studies, data on food preferences are analyzed.The authors are grateful to Donald B. Rubin and Michael E. Sobel for critical reading of a first draft of this paper and to three anonymous reviewers ofPsychometrika for their helpful comments and suggestions. The research of the first and the third author was supported by a grant from the Deutsche Forschungsgemeinschaft.     

Remembering children's emotions: sources of concordant and discordant accounts between parents and children.

Parents were asked to recall recent events that had evoked happiness, sadness, anger, and fear in their children. Children (N = 77, 2.3-6.6 years) indicated whether they remembered each event, and if so, they described the event and how it had made them feel. Agreement between parent and child concerning how the child felt varied as a function of emotion. Children agreed with their parents' emotion attributions most often for events that parents recalled as having evoked happiness and sadness, less often for fear, and least often for anger. Children disagreed with parents' attributions of happiness and sadness most often when parents and children differed concerning the attribution of children's goals. Discordant reports about children's anger were most frequent when parents and children reported conflicting goals. Discordant reports about fear were most frequent when parents and children focused on different parts of the temporal sequence surrounding the event.     

A scale for the psychological magnitude of number

A scale of the “psychological magnitude” of number was constructed from similarity ratings of the 45 number pairs that can be obtained from a set of 10 integers. A nonmetric analysis of these similarity ratings showed that “psychological number” was a power function of number.     

Writing about psychoanalysis: II. Analysts who write, patients who read

When we make a decision to lecture, or to write for publication, we have begun an activity that will affect every one of our patients. If they attend our lectures, or read our published works, they cannot help being influenced. Even if they do not, they will have some reaction to the focusing of our interest on particular phases of the analysis. This will be true whether or not we intend to present clinical material. These considerations inevitably affect the analyst himself, sometimes inhibiting his writing altogether, sometimes constricting its scope, or worst of all, degrading its quality. The analyst's writing is also almost certain to influence whether and with what success his patient may choose to write. Lest these considerations suggest that we avoid writing altogether, I emphasize that such a sacrifice is by no means desirable or necessary. Problems of discretion will arise, and may in some cases be virtually insoluble; but there are ways of writing that can overcome most such objections. The analyst's interest in writing should be recognized and its effects, if any, brought into the analysis; so long as the writing itself is done with due regard to the conduct of the analysis and the welfare of the patient, it need have no adverse effects on either.     

Sexual assault history and use of health and mental health services

A history of sexual assault may be associated with increased current use of mental health and medical services because of the psychologically and physically disruptive consequences of assault. To test this hypothesis, we estimated rates of mental health and medical services use among 2560 randomly selected community residents, 343 of whom had been sexually assaulted. Sexual assault was associated with seeking both forms of care. Controls for demographic variables, psychiatric diagnosis, health status, and insurance suggested that assault increases use indirectly, through poor mental and physical health. Uninsured, assaulted respondents were especially likely to consult medical providers. Respondents assaulted during childhood were particularly likely to seek mental health care. Assault was more common among mental health service users than nonusers, and among women using medical services compared to female nonpatients. The high prevalence of assault among service users underscores the need for providers to recognize and treat sexual assault-related problems.