Magnetic source images of human brain functions

The advent of large arrays of superconducting magnetic field sensors makes it possible to properly sample the topography of the magnetic field pattern across the human scalp with a temporal resolution of a few milliseconds. These capabilities can be exploited for computing a best estimate of the spatiotemporal evolution of electrical currents within coherently active neural populations distributed across the cerebral cortex. Data from 200 sensors can be interpreted by the method of singular value decomposition to compute a best estimate for the strengths of more than 9,000 current elements that define the magnetic source image moment by moment. Recently, an extension of this technique has been developed to characterize the cortical sources of alpha rhythm. This holds promise for providing a means of identifying the cortical regions that participate in cognitive functions such as mental imagery.     

Parents and their children comment on adolescence

The authors completed research on over 700 twelve-year-olds and their parents concerning their attitudes toward the ensuing teenage years. Their responses and written comments reflect and support in large measure the developmental tasks expounded by Robert Havighurst. These include the need to achieve independence, their concern with social relationships, and the acceptance of physical appearance. Parents' concerns about their children becoming teenagers centered on communication and peer pressure.     

Validation of self-ideal body size discrepancy as a measure of body dissatisfaction

Recently, body dissatisfaction has been conceptualized as the discrepancy between self and ideal body size estimates. This study evaluated the validity of this conceptualization using three methods for estimating actual and ideal body size: (a) the Body Image Assessment, (b) the Body Image Testing System, and (c) the Body Image Detection Device. The three body image assessment procedures were concurrently administered to a sample of 110 women diagnosed: bulimia nervosa (n=18),obese (n=34),and non-eating disorder (n=58).The Eating Disorder Inventory Body Dissatisfaction scale was also used to measure body dissatisfaction. Measures of self-ideal body size discrepancy were found to correlate more highly with measures of body dissatisfaction than were measures of current body size perception, ideal body size, body size estimation accuracy, or indices based on actual body size. Estimation of both current and ideal body size were found to significantly predict overall body dissatisfaction; thus, both self and ideal body size measures were found to be significant components in determining body size dissatisfaction. These data were interpreted as supportive of the conceptualization of body dissatisfaction as the discrepancy between self and ideal body size estimates.     

From interrogation to investigative interviewing; strategic trends in police questioning

The Court of Appeal has recently released a number of people who were convicted of serious charges because it could no longer rely on confessions obtained during Police questioning. A detailed questionnaire study in 1987 of 80 detectives at four busy inner-London Police Stations indicated that there had been improvements in the way Police question suspects. This is a result of the combined effects of new legislation, technology, and organizational policies designed to encourage an ethical approach to investigation. The majority of detectives have moved away from questioning purely to obtain a confession, towards questioning that is more of an inquiry—examining and adding to the existing evidence. However, a small number of detectives still indicated a preference for a dominant, confrontational style of interviewing, which stands in marked contrast to the majority emphasis on co-operative interviewing styles. It appeared from this study that the legislation would succeed in making the questioning of suspects less inherently coercive. Subsequent empirical studies have shown this trend to be continuing. The concept of ‘investigative interviewing’ as an alternative to interrogation has been developed with the assistance of psychologists and is being promoted through a national training programme intended to restore confidence in evidence obtained through Police questioning.     

A 2-year longitudinal study of depression among Alzheimer's caregivers.

Results from a 2-year (4 waves) longitudinal study show strong evidence for patient decline and high levels of depressive symptomatology among caregivers. Female caregivers reported high, stable rates of depressive symptomatology throughout the study, whereas male caregivers exhibited significant increases in depression over time. Cross-sectional multivariate analyses revealed significant positive relationships between depression and number of patient problem behaviors, negative social support, and concern about financial resources; negative relationships were found between depression and social support, quality of prior relationship, and satisfaction with social contacts. Three significant independent predictors of change in depression were found: Lower depression scores at Time 1 were related to increases in depression over time; men were more likely than women to experience increases; and a decline in social support resulted in increased depression.     

Clarifying body-image disturbance: analysis of a multidimensional model using structural modeling

A multidimensional model of body-image disturbance was tested. The model incorporated the concepts of body-size distortion, preference for thinness, body dissatisfaction, and fear of fatness as predictors of restrictive eating. The LISREL 7 program was used to perform a structural modeling analysis of the theoretical model. A total of 175 women participated in the study (54 eating-disordered patients and 121 undergraduate students). The results supported the hypothesized four-dimensional model relative to alternative one-, two-, and three-dimensional models. Body dissatisfaction appeared to be directly affected by both body-size distortion and preference for thinness. Fear of fatness was found to be the best predictor of restrictive eating. The results appeared consistent across the clinical and nonclinical samples. These data may help resolve many of the current controversies in the body-image literature. The results also suggested the need to develop more sound assessment instruments for fear of fatness.     

Caring for a Family Member With Cancer: Past Communal Behavior and Affective Reactions1

An important recent development in the caregiving literature is an increased focus on the role played by the interpersonal relationship between caregiver and care recipient. In this study, a prediction derived from communal relationship theory (Clark & Mills, 1979, 1993; Mills & Clark, 1982) was tested in a sample of patients with recurrent cancer and their family caregivers. Specifically, it was hypothesized that if a relationship had been communal in the past (i.e., characterized by mutual demonstrations of concern for and responsiveness to one another's needs), positive feelings about helping one's partner should continue even when one partner's needs far outweigh those of the other. Consistent with this hypothesis, results indicated that caregivers whose relationship with the patient before illness onset had been characterized by relatively infrequent communal behaviors evidenced more symptoms of depression that did those whose relationship had been characterized by more frequent communal behaviors. In addition, the effects of prior communal behavior on depressed affect were both mediated and moderated by feelings of burden. Caregivers who recalled relatively few communal behaviors in their past relationship felt more burdened by their caregiving role, and burden in turn predicted greater depressive symptomatology. Implications for early identification of caregivers at risk for becoming distressed are discussed.     

Acoustic Distinctions in the Speech of Male Psychopaths

A key feature of psychopathy is the ability to deceive, manipulate, and con the unwary, while seeming to be perfectly sincere. Is this impression of sincerity achieved solely through body gestures and facial expression, or is there also something different about the voice quality of psychopaths? We analyzed the acoustic characteristics of speech in 20 male offenders (10 psychopaths and 10 nonpsychopaths), assessed with the Psychopathy Checklist—Revised (Hare, 1991). We used a computer program developed by Alpert, Merewether, Homel, Martz, and Lomask (1986) to measure variations in amplitude and prosody. Results indicated that psychopaths spoke more quietly than controls and did not differentiate, in voice emphasis, between neutral and affective words. These findings are consistent with the developing view that psychopaths are insensitive to the emotional connotations of language. In addition, their vocal characteristics may be part of a self-presentation mode designed to manipulate and control interpersonal interactions.