The functional role of cross-frequency coupling

Recent studies suggest that cross-frequency coupling (CFC) might play a functional role in neuronal computation, communication and learning. In particular, the strength of phase-amplitude CFC differs across brain areas in a task-relevant manner, changes quickly in response to sensory, motor and cognitive events, and correlates with performance in learning tasks. Importantly, whereas high-frequency brain activity reflects local domains of cortical processing, low-frequency brain rhythms are dynamically entrained across distributed brain regions by both external sensory input and internal cognitive events. CFC might thus serve as a mechanism to transfer information from large-scale brain networks operating at behavioral timescales to the fast, local cortical processing required for effective computation and synaptic modification, thus integrating functional systems across multiple spatiotemporal scales.     

The minister as healer,the healer as minister

A major task of the minister is that of healer, and with the healing task come some special opportunities. These relate to the therapy of the word, awakening in all the tragic sense of life, an identity with the wounded healer, distinguishing between healing and curing, and accepting the medical education enterprise as a patient. The healer as minister broadens the healing community into a priesthood of all believers. Further, our rich heritage of healing is anchored in the biblical tradition, and a study of this will show a similarity between ancient and modern healing.This article is based on a paper presented at the Annual Conference of the Ministers in Medical Education of the Society for Health and Human Values, Washington, D.C., October 23–26, 1980.     

ELIMINATION OF BEDTIME THUMBSUCKING IN HOME SETTINGS THROUGH CONTINGENT READING1

Reading stories at bedtime was made contingent upon nonthumbsucking for girls 3, 6, and 8 yr old. According to their mothers, all had been persistent thumbsuckers since infancy. Two had accompanying dental disorders. During baseline conditions, continuous noncontingent reading occurred. During experimental conditions, reading terminated on each occasion thumbsucking was observed and resumed immediately when thumbsucking ceased. High percentages of thumbsucking occurred during baseline conditions when reading was noncontingent, and low percentages occurred during experimental conditions when reading was contingent. Bedtime thumbsucking was eliminated for all three girls.     

Channels and order of report in dichotic memory*

Experiments were conducted in which Ss received to-be-remembered sequences of two, three, or four simultaneous pairs of digits. Both digits of each pair were recorded by the same male speaker and both were presented binaurally, thus eliminating cues of spatial location and voice by which Ss could “channel” their reports. Even in the absence of these stimulus channels, Ss reported the digits sequentially. High bias ratings in the first experiment suggested the possibility that sequential reports were induced by uncontrolled stimulus characteristics (e.g., temporal synchrony, intensity, and pitch). Pulse-coded speech stimuli, which provided greater control over nonlinguistic stimulus features, were used in the terminal experiment. Bias ratings were reduced, but the majority of Ss continued to report sequentially. These results suggest that the presence of stimulus channels is not a necessary condition for the occurrence of sequential reporting.     

An examination of the cross-ethnic equivalence of measures of negative life events and mental health among Hispanic and Anglo-American children

Recently there has been concern over the need for mental health research within ethnic minority populations, particularly Hispanic populations. Although there has been research focusing upon the similarity of mental health problems among Hispanic and Anglo-American samples, the absence of information regarding the cross-ethnic measurement equivalence of the assessment tools used in these comparisons seriously limits the interpretability of these findings. The two reported studies were designed to (a) examine the cross-ethnic functional and scalar equivalence of several mental health measures by examining the interrelations of these mental health indicators and examining the regression equations using negative life events to predict mental health outcomes; and (b) compare several mental health indicators among Hispanic and Anglo-American 8- to 14-year-old children. Findings suggest considerable cross-ethnic functional and scalar equivalence for the measure of depression, conduct disorders, and negative life events. In addition, findings indicate that the Hispanic children scored higher in depression than did the Anglo-American children, but this difference could be a function of differences in SES. The reader is cautioned that the present samples included only English-speaking and primarily Mexican American children. This study was funded by the National Institute for Mental Health Grant 2-P50-MH39246-06 to support the Preventive Intervention Research Center at Arizona State University. The authors gratefully acknowledge the contributions made by Tim Ayers, Carolyn Berg, Leah Gensheimer, Joanne Gersten, Nancy Groppenbacher, Lisa Jack, Lillian Lengua, Marcia Michaels, Irwin Sandler, and Jerome Short.     

The socialization of prosocial behavioral tendencies among Mexican American adolescents: The role of familism values

This study investigates the role of familism values in fostering socialization experiences that promote prosocial behavioral tendencies among Mexican American adolescents. Two hundred and four Mexican American mothers and their adolescent children (104 girls, age M = 10.91 years) completed measures of familism values, prosocial parenting practices, and prosocial behavioral tendencies. Structural equation modeling tests indicated that mothers' familism values are related to parenting behaviors that promote prosocial behavioral tendencies, which in turn are related to adolescents' perception of prosocial parenting practices. Furthermore, adolescents' perception of prosocial parenting practices is related to familism values and prosocial behavior tendencies. Last, the relation between adolescents' perception of prosocial parenting practices and prosocial behavioral tendencies is partially mediated by familism values. These findings are consistent with the theoretical suggestion that the transmission of traditional familism values may serve as a social medium through which prosocial behavioral tendencies are fostered among Mexican American adolescents.     

Goal-directed memory: the role of cognitive control in older adults' emotional memory

The present study revealed that older adults recruit cognitive control processes to strengthen positive and diminish negative information in memory. In Experiment 1, older adults engaged in more elaborative processing when retrieving positive memories than they did when retrieving negative memories. In Experiment 2, older adults who did well on tasks involving cognitive control were more likely than those doing poorly to favor positive pictures in memory. In Experiment 3, older adults who were distracted during memory encoding no longer favored positive over negative pictures in their later recall, revealing that older adults use cognitive resources to implement emotional goals during encoding. In contrast, younger adults showed no signs of using cognitive control to make their memories more positive, indicating that, for them, emotion regulation goals are not chronically activated.     

Restrained eating: an experimental disentanglement of the disinhibiting variables of perceived calories and food type

The influence of food type on the restrained eating pattern was examined. In Study 1, subjects rated the degree to which each of 149 foods were dietary permissable or dietary forbidden. The number of avoided foods correlated positively with restraint score. Study 2 compared Herman and Mack's (1975) 1- and 2-milk shake preloads to two nonforbidden preloads of equivalent calories. Food type, and not perceived calories, was found to be the element of the preload required to cause disinhibition among restrained eaters, both within the experiment and outside the experimental setting. Study 3 examined the effects of anticipated consumption (varying food type and calories) on the restrained eating pattern. Only restrained eaters anticipating a forbidden food (whether high or low in calories) were disinhibited. The restrained literature was reconsidered in light of the forbidden food hypothesis.