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101.
Human control of action in routine situations involves a flexible interplay between (a) task‐dependent serial ordering constraints; (b) top‐down, or intentional, control processes; and (c) bottom‐up, or environmentally triggered, affordances. In addition, the interaction between these influences is modulated by learning mechanisms that, over time, appear to reduce the need for top‐down control processes while still allowing those processes to intervene at any point if necessary or if desired. We present a model of the acquisition and control of goal‐directed action that goes beyond existing models by operationalizing an interface between two putative systems—a routine and a non‐routine system—thereby demonstrating how explicitly represented goals can interact with the emergent task representations that develop through learning in the routine system. The gradual emergence of task representations offers an explanation for the transfer of control with experience from the non‐routine goal‐based system to the routine system. At the same time it allows action selection to be sensitive both to environmental triggers and to biasing from multiple levels within the goal system.  相似文献   
102.
We agree with the commentaries that Relational psychoanalysis has stood firmly against dichotomizing clinical reflection, on one hand, and interactional processes, on the other. Still, we wonder whether the relational literature has skewed toward interaction at the expense of concentrated attention to patients’ internal worlds. Predispositions toward interaction may diminish reflective space and quiet inwardness, which are themselves forms of analytic relating. We raise the possibility that the Relational model’s inclusive breadth, valuable as it is, might sometimes impede and even devalue discussions of specific technical matters. We consider clinical conceptualizations of ritual, “relating,” and “being in contact.”  相似文献   
103.
Primates, including humans, communicate using facial expressions, vocalizations and often a combination of the two modalities. For humans, such bimodal integration is best exemplified by speech-reading - humans readily use facial cues to enhance speech comprehension, particularly in noisy environments. Studies of the eye movement patterns of human speech-readers have revealed, unexpectedly, that they predominantly fixate on the eye region of the face as opposed to the mouth. Here, we tested the evolutionary basis for such a behavioral strategy by examining the eye movements of rhesus monkeys observers as they viewed vocalizing conspecifics. Under a variety of listening conditions, we found that rhesus monkeys predominantly focused on the eye region versus the mouth and that fixations on the mouth were tightly correlated with the onset of mouth movements. These eye movement patterns of rhesus monkeys are strikingly similar to those reported for humans observing the visual components of speech. The data therefore suggest that the sensorimotor strategies underlying bimodal speech perception may have a homologous counterpart in a closely related primate ancestor.  相似文献   
104.
Event-related potential (ERP) studies have shown that emotional stimuli elicit greater amplitude late positive-polarity potentials (LPPs) than neutral stimuli. This effect has been attributed to arousal, but emotional stimuli are also more semantically coherent than uncategorized neutral stimuli. ERPs were recorded during encoding of positive, negative, uncategorized neutral, and categorized neutral words. Differences in LPP amplitude elicited by emotional versus uncategorized neutral stimuli were evident from 450 to 1000 ms. From 450 to 700 ms, LPP effects at midline and right hemisphere frontal electrodes indexed arousal, whereas LPP effects at left hemisphere centro-parietal electrodes indexed semantic cohesion. This dissociation helps specify the processes underlying emotional stimulus encoding, and suggests the need to control for semantic cohesion in emotional information processing studies.  相似文献   
105.
106.
The purpose of this study was to determine the effect of social support on parent-child interaction in a group of 19 adolescent mothers. The subjects participated in a 20-week model demonstration program in which they worked in a preschool classroom with skilled caregivers who modeled facilitative styles of interacting with young children. Each subject was videotaped while interacting with a 1- to 2-year-old child upon entering the program, midway through the program, and at the end. Results showed that girls who were 16 years or older significantly increased their frequency of using responsive, engaging, and elaborative styles of behavior. Those under age 16 did not show significant changes in these three behaviors. Overall, subjects significantly increased the duration of time they spent observing the child's play behavior.  相似文献   
107.
Information search following damage to the frontal lobes   总被引:2,自引:0,他引:2  
Five adult patients with focal brain damage in different areas of the frontal lobes and five matched controls were administered a 20 Questions test. Other tests of planning, problem-solving, and decision-making were also administered to frontal lobe patients. The results indicate that damage to the frontal lobe impairs the ability to impose and utilize hierarchical organization in mental representation.  相似文献   
108.
An experiment was conducted to determine how visual attention is allocated in response to pairwise combinations of location, color, and size cues. Subjects viewed displays of eight letters arranged into an 'X' pattern emanating from a central fixation point. The letters varied on the dimensions of location (foveal or parafoveal positions), size (large or small), and color (red or blue). Seven of the letters were 'X's and the remaining, critical letter was either an 'R' or an 'L'. Subjects were given advance cues about characteristics of the critical letter on two of the three dimensions (location size, and color). The cues varied in their validity such that on any trial either both dimensions were validly cued, one dimension was validly cued while the other was invalidly cued, or both cues were invalid. Subjects were instructed to try to use the cues to find the critical letter, and response times to identify it as an 'R' or an 'L' served as the main dependent measure. Two models were evaluated against the data; in one, location cues are viewed as having distinct effects on an early stage of attention whereas color and size cues operate only in a later, selection stage. In the other model, all cues are used in a similar way to select display items for serial, focal attention. In general, the serial processing model provides a more complete account of the data.  相似文献   
109.
This exploratory study uses qualitative methods to focus on the largely unexamined role of the grandfather and to examine men's experiences as grandfathers. We gathered information through both surveys and individual interviews to explore men's feelings and attitudes toward the grandfather role. Of the 51 grandfathers that completed a survey, 20 participated in interviews. Our examination of the data collected reveals the life lessons men teach their grandchildren. The grandfathers in this study expressed strong desires for purposeful involvement in their grandchildren's lives and indicated desires for transferring values to grandchildren and teaching interpersonal relationships. Through this involvement, they educate through life experiences and serve as mentors for their grandchildren. We suggest that this mentoring role makes a positive contribution to the lives of grandchildren and to the identity of grandfathers.  相似文献   
110.
In this study, the reliabilities of the Dutch translation of the Occupational Stress Inventory, which is based on the theory of Cooper (Cooper & Marshall, 1976), was investigated. The sample comprised 436 nurses. A comparison is made of the individual and job satisfaction stress levels of Dutch and British nurses (N = 546), and of British managers (N =123) and German managers (N =133). The differences in the reliabilities of the Dutch version, compared to the British and German, are small. The differences between the stress and satisfaction scores are found to be greater between occupational groups than between nations.  相似文献   
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