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501.
THE IMPACT OF AUDITION ON THE DEVELOPMENT OF VISUAL ATTENTION 总被引:5,自引:0,他引:5
Alexandra L. Quittner Linda B. Smith Mary Joe Osberger Teresa V. Mitchell Donald B. Katz 《Psychological science》1994,5(6):347-353
Interactions between audition and vision were investigated in two experiments In the first experiment, school-age hearing children, deaf children with cochlear implants, and deaf children without implants participated in a task in which they were to respond to some visual signals and not others This task did not involve sound at all Deaf children without implants performed much more poorly than hearing children Deaf children with cochlear implants performed considerably better than deaf children without implants The second experiment employed a longitudinal design and showed that the rate of development in visual selective attention was faster for deaf children with cochlear implants than deaf children without implants Moreover, the gams were rapid–occurring within 2 years post-implant surgery The results suggest that a history of experience with sounds matters in the development of visual attention The results are discussed in terms of multimodal developmental processes 相似文献
502.
Marisa Carrasco Denise L. Evert Irene Chang Svetlana M. Katz 《Attention, perception & psychophysics》1995,57(8):1241-1261
The serial pattern found for conjunction visual-search tasks has been attributed to covert attentional shifts, even though the possible contributions of target location have not been considered. To investigate the effect of target location on orientation × color conjunction searches, the target’s duration and its position in the display were manipulated. The display was present either until observers responded (Experiment 1), for 104 msec (Experiment 2), or for 62 msec (Experiment 3). Target eccentricity critically affected performance: A pronounced eccentricity effect was very similar for all three experiments; as eccentricity increased, reaction times and errors increased gradually. Furthermore, the set-size effect became more pronounced as target eccentricity increased, and the extent of the eccentricity effect increased for larger set sizes. In addition, according to stepwise regressions, target eccentricity as well as its interaction with set size were good predictors of performance. We suggest that these findings could be explained by spatial-resolution and lateral-inhibition factors. The serial self-terminating hypothesis for orientation × color conjunction searches was evaluated and rejected. We compared the eccentricity effect as well as the extent of the orientation asymmetry in these three conjunction experiments with those found in feature experiments (Carrasco & Katz, 1992). The roles of eye movements, spatial resolution, and covert attention in the eccentricity effect, as well as their implications, are discussed. 相似文献
503.
504.
R Greenberg H Katz W Schwartz C Pearlman 《Journal of the American Psychoanalytic Association》1992,40(2):531-550
We present a brief review of sleep research which, when combined with psychoanalytic experience, has led to the hypothesis that REM sleep and dreaming serve the function of adaptation by the process of integration of information. We then report the results of a study of dreams, based on this hypothesis. We studied dreams and their relation to waking mental activity and found a correlation between problems in manifest dreams and those in pre- and postsleep waking life. Dreams can be understood on the basis of problems that appear in them. We also found evidence for a relation between the solution of problems in dreams and the fate of those problems the next day. We discuss these findings in relation to some of the controversies about dreaming, and then present suggestions for future research. 相似文献
505.
Cocaine and food as reinforcers: effects of reinforcer magnitude and response requirement under second-order fixed-ratio and progressive-ratio schedules. 总被引:3,自引:2,他引:1
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Reinforcer magnitude and fixed-ratio requirement were varied under two second-order schedules. Under one, the first sequence of a fixed number of responses completed after the lapse of a 10-min fixed interval produced reinforcement. Under the second, a second-order progressive-ratio schedule, the fixed number of responses increased after each reinforcement. Either cocaine (0 to 300 micrograms/kg/inj) or food (0 to 5,700 mg/delivery) reinforcers were delivered. Under some conditions, a 2-s illumination of stimulus lights occurred on completion of each ratio sequence. Under the second-order schedule, as cocaine dose or amount of food increased, rates of responding increased; at the highest values, rates of responding decreased. Increases in the ratio requirement from 10 to 170 responses minimally decreased overall response rates. Under the second-order progressive-ratio schedule, increases in dose of cocaine or amount of food increased rates of responding; at the highest amounts of food, rates of responding decreased but response rates at the highest dose of cocaine remained relatively high. The highest ratio requirement that was completed (breaking point) depended on the dose of cocaine but was less dependent on the amount of food. Removing brief-stimulus presentations had a greater effect on completion of ratio requirements with cocaine compared to food. 相似文献
506.
Summary Is an inflected word identified by first decomposing it into stem plus suffix or, instead, is it recognized as a whole? Several lexical decision experiments studied the recognition of inflected words in English (a language with few inflections) and Serbo-Croatian (a heavily inflected language). If recognition depended on decomposition, preceding the inflection with a brief exposure of the stem (<100 ms) should have primed the lexical entry for the stem and, therefore, facilitated recognition of the whole inflected word that followed. It did not. It was also found that the speed of recognizing an inflected word was more strongly associated with the frequency of the whole inflected form than with the frequency of its stem. The results suggested that in word recognition, lexical contact is first made with the whole word form. Nevertheless, morphological decomposition may still occur in subsequent processing. 相似文献
507.
Assessing the Prevalence of Body Dysmorphic Disorder in an Ethnically Diverse Group of Adolescents 总被引:2,自引:0,他引:2
Stephen Mayville Roger C. Katz Martin T. Gipson Keri Cabral 《Journal of child and family studies》1999,8(3):357-362
We investigated the prevalence of Body Dysmorphic Disorder (BDD) in an ethnically diverse sample of adolescents (N = 566) using the Body Image Rating Scale, a brief self-report measure for assessing body dissatisfaction. Results showed that adolescent girls were more dissatisfied with their bodies than adolescent boys, and that African-Americans of both genders were less dissatisfied with their bodies than Caucasians, Asians, and Hispanics. The interaction between gender and ethnicity was not significant. We found an overall prevalence for BDD of 2.2%. Although these are the first data on the prevalence of BDD in an ethnically diverse group of adolescents, they are consistent with the other study on the prevalence of BDD in a predominantly Caucasian group of college students. 相似文献
508.
Roger C. Katz Nicole Zenger 《Journal of psychopathology and behavioral assessment》1999,21(3):183-189
We describe a brief self-report measure for assessing hypochondriacal fears in adults. Called the Survey of Health Concerns (SHC), the measure was developed using DSM IV criteria for diagnosing hypochondriacal disorder as a guide. The measure was standardized on a sample of 188 college students. It was shown to have good internal and temporal reliability over a 2-week period. Moreover, scores on the SHC correlated significantly with worry proneness as measured by the Penn State Worry Questionnaire, and with the Hs scale of the MMPI-2, which together support the convergent validity of the measure. While men and women scored the same, participants who were being treated for a medical condition scored higher than those who were not being treated. Men who were under a doctor's care scored especially high, although this was based on a small sample of men and the effect could be spurious. A principal component factor analysis revealed two primary factors: one that described participants who felt poorly, made frequent trips to the doctor, and were fearful of illness and dying, and another that described participants who were particularly fearful of infectious diseases and took active steps to avoid becoming sick. Relatively little is known about hypochondriacal disorder. One reason for the dearth of knowledge in this area is that there has been no practical and reliable way to assess hypochondriacal fears, or more generally speaking, people's tendency to worry about their health. The SHC may help to fill this void. Results are admittedly preliminary and further study in medical settings is needed. 相似文献
509.
This target article examines the clinical and experimental evidence for a role of peripheral and central hyperexcitability in persistent pain in four key areas: cutaneous hyperalgesia, referred pain, neuropathic pain, and postoperative pain. Each suggests that persistent pain depends not only on central sensitization, but also on inputs from damaged peripheral tissue. It is instructive to think of central sensitization as comprised of both an initial central sensitization and an ongoing central sensitization driven by inputs from peripheral sources. Each of these factors, initial sensitization, ongoing central sensitization, and inputs from peripheral sources, contributes to the net activity in dorsal horn neurons and thus influences the expression of persistent pain or hyperalgesia. Since each factor, peripheral inputs and central sensitization (initial or ongoing), can contribute to both the initiation and maintenance of persistent pain, therapies should target both peripheral and central sources of pathology. 相似文献
510.
Separate factor analyses of the value rankings of 53 male and 77 female college students yielded three factors for each gender. Interpretation suggested Creative Self-Determination versus Submissive Dependency, Personal Gratification versus Sociopolitical Consciousness, and Existential Responsibility versus Traditionalism as core concepts for the female respondents; while males' axiological dimensions were labeled Communal Idealism versus Entrepreneural Pragmatism, Hedonism versus Egalitarianism, and Sybaritic Bohemianism versus Traditional Sobriety. Each pole of the female factors was interpreted as reflecting a major ideological referent component of the Women's Liberation Movement, while male factors were construed as constituting perspectives for interpreting varieties of response to feminist ideology. Techniques for increasing individuals' levels of self-actualization by direct intervention in axiological organization were discussed. 相似文献