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Victor W. Henderson Wendy Mack David M. Freed Daniel Kempler Elaine S. Andersen 《Brain and language》1990,39(4):530-538
Although lexical semantic deficits are postulated to play a prominent role in the anomia of Alzheimer's disease, it is unclear whether the primary disturbance is one of lexical access or one of lexical semantic loss. Response consistency on a naming task is one means of evaluating the underlying source of naming impairment. Access dysfunction usually implies variable word-finding difficulty, while a theory of lexical loss predicts that many word names would be consistently unavailable. Nineteen Alzheimer's disease patients were administered a visual confrontation naming task (the Boston Naming Test) on two occasions 6 months apart. Eighty percent of errors occurred consistently at both times; only 20% of errors occurred on only one occasion. Response consistency occurred significantly more often than expected under the assumption of no response consistency. Findings support the hypothesis that anomia in Alzheimer's disease is in part due to a loss of lexical semantic information. 相似文献
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This study examines how consuming alcohol differentially affects the communicative behavior and perceptions of high and low social self‐esteem (SSE) women as they engage in a brief interaction with a flirtatious male. Alcohol myopia theory proposes that alcohol affects behavior when it blocks a person's normal inhibitions about enacting a behavior. It was predicted that low SSE women would be more inhibited when talking to a flirtatious male than would high SSE women and, therefore administration of a social self‐esteem measure and random assignment to an alcoholic or nonalcoholic beverage condition, participants (N=50) talked with an attractive, flirtatious male confederate. Low SSE women were less anxious and self‐disclosed more when drinking than when sober, whereas high SSE women were not significantly affected by alcohol consumption. The discussion highlights the complex and often contradictory effects of alcohol consumption on social interaction. 相似文献
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Joseph J. Campos A. Ulric Moore W. Mack Goldsmith 《Integrative psychological & behavioral science》1968,3(2):105-115
There have been some observations to indicate that waiting for a shock is stressful, that the coining of an anticipated shock can serve as a tension reliever, and that failure to obtain an anticipated shock is more stressful than being shocked. Based on these observations, the following hypotheses were tested. If it is true that failure to receive shock is more stressful than the shock itself, it should be possible to train an animal to bring on a shock that had failed to come when anticipated. If a period of anticipating shock is stressful, and shock serves as a reliever of the stress, it should be possible to train an animal to perform a response instrumental to bringing on the shock sooner. Results indicated that shock does seem to serve as a reliever, that waiting for shock is stressful, but that failure to receive an anticipated shock under these circumstances is not more stressful than the shock itself. In addition, it was found that subjects learned to produce shock instrumentally if the shock was inevitable and could thus be brought about sooner. Results were inconclusive, though generally negative, on the issue of whether S’s would produce an avoidable shock that had failed to come when anticipated. 相似文献
17.
Owens KM Marvin ML Gelehrter TD Ruffin MT Uhlmann WR 《Journal of genetic counseling》2011,20(5):510-525
This study examined medical students’ and house officers’ opinions about the Surgeon General’s “My Family Health Portrait”
(MFHP) tool. Participants used the tool and were surveyed about tool mechanics, potential clinical uses, and barriers. None
of the 97 participants had previously used this tool. The average time to enter a family history was 15 min (range 3 to 45 min).
Participants agreed or strongly agreed that the MFHP tool is understandable (98%), easy to use (93%), and suitable for general
public use (84%). Sixty-seven percent would encourage their patients to use the tool; 39% would ensure staff assistance. Participants
would use the tool to identify patients at increased risk for disease (86%), record family history in the medical chart (84%),
recommend preventive health behaviors (80%), and refer to genetics services (72%). Concerns about use of the tool included
patient access, information accuracy, technical challenges, and the need for physician education on interpreting family history
information. 相似文献
18.
Diane E. Mack Heather A. Strong Kent C. Kowalski Peter R. E. Crocker 《Journal of applied social psychology》2007,37(6):1248-1264
The role of peer group composition and influence variables on social physique anxiety was examined. Peer network data were gathered on 375 adolescents (181 male, 194 female). Females reported experiencing higher social physique anxiety, more pressure and encouragement to alter their physique from peers, greater body‐related discussion, and greater identification with the peer group than did males. Regression analyses revealed 2 peer influence variables—peer pressure and relative attractiveness of peers—to be significant predictors of social physique anxiety. A third variable—extent to which the individual identified with peer network—was a significant predictor for females. Results are discussed in reference to previous research, and future research directions are identified. 相似文献
19.
A new visual illusion is reported. The apparent distance through which a displaced target appears to move is significantly shorter when pursuit tracked than when that same distance is observed by means of a saccadic eye movement. This misperception of distance seems to be related to the Aubert-Fleischl paradox, the underestimation of the velocity of a tracked target, and to reveal a consistent characteristic of the pursuit eye movement system. 相似文献
20.
Arien Mack Friderike Heuer Katherine Villardi Deborah Chambers 《Attention, perception & psychophysics》1985,37(4):335-344
Three experiments were designed to determine whether Müller-Lyer figures cause a misperception of the positions of their fins and, if they do, whether it is commensurate with the distortion of extent. Observers marked the visible intersection of shaft and fins either with their unseen hands or with their visible hands after the figure had been removed from view. In the former case, no systematic distortions of position were evident. In the latter case, there were small, systematic distortions of position, which were significantly smaller when the observers fixated the target vertex than when they fixated the center of the figure. These differences are discussed in terms of the probable similarities between the control of eye movements and the control of pointing responses. Of particular importance is the finding that even the largest distortions of vertex position were much smaller than the distortions of shaft extent. The results appear to provide evidence of the independence of perceived position from perceived extent in Müller-Lyer figures and to contradict all existing theories of the illusion. 相似文献