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121.
B. Delisle Burns G. Mandl R. Pritchard Cordelia Webb 《Quarterly journal of experimental psychology (2006)》1969,21(4):299-311
Point-sources of light (dots) were exposed for 10 to 50 msec, before five dark-adapted subjects in a dimly illuminated room. During voluntary fixation with one eye, the target was exposed some 10° on the nasal side of the optic axis. The intensity X duration of all targets was 2 X threshold and they consisted of either a single dot, or a pair of dots separated by a distance that was less than that required for two-point discrimination. In two-thirds of trials both the single-dot and the two-dot targets were perceived as short thin lines of various orientation. Although individual percepts were unpredictable, there was a preferred or most likely orientation for responses to the single-dot target; this was near to the horizontal for all five subjects. There was no significant difference between the preferred orientations for single-dot targets tested at sites more than 1° apart in the visual field. When two single-dot targets, separated by about 1°, were exposed simultaneously, the orientations of the perceived lines sometimes differed by as much as 80°; occasionally, one target was reported as a dot while the other was seen as a thin line. If the single-dot was briefly exposed between two continuously visible and parallel straight lines, the target usually appeared as a thin line, parallel to the framing lines. Some of these results appear to be consistent with the hypothesis that the human visual cortex, like that of the cat and monkey, contains neurones that are orientation specific. 相似文献
122.
Infertility as boundary ambiguity: one theoretical perspective 总被引:3,自引:0,他引:3
L H Burns 《Family process》1987,26(3):359-372
Infertility as a life event can be understood from a number of conceptual perspectives: a developmental crisis, a grief reaction, a disruption of marital contracts and roles, a crisis of identity, sexuality, and/or values, or a challenge of decision-making processes. Stress theory and the construct of boundary ambiguity can augment the understanding of the crisis of infertility by providing a different approach and unique perspective. It is the hypothesis of this article that the involuntarily childless couple may experience infertility as a stress of boundary ambiguity, that is, not knowing who is in and who is out of the family system. As infertile couples attempt to make the transition to parenthood they may experience the child they wish to have as a family member who is psychologically present but physically absent. 相似文献
123.
This study was designed to determine if perceptual phonological analysis would reveal distinctions between patients with apraxia of speech and patients with phonemic paraphasic speech. Test findings from 10 Broca's aphasics with apraxia of speech were compared to findings from 10 paraphasic speakers (5 conduction and 5 Wernicke's aphasics). Several marked differences were revealed. Predominant locus of errors and relative difficulty of different classes of phonemic segments were significant discriminators. There was a nonsignificant trend for substituted phonemes to be further from target phonetically in the paraphasic patients. In addition, the two groups showed certain consistent differences in the types of errors they produced. Apraxic patients produced many errors of transitionalization, while sequencing errors were more typical of the patients with phonemic paraphasia. The findings are interpreted in relation to a neuropsychological model of speech. It is suggested that phonemic paraphasia represents a breakdown mainly in the retrieval of phonological word patterns, while apraxia of speech is characterized predominantly by a disturbance in encoding phonological patterns into appropriate speech movements. 相似文献
124.
125.
Elizabeth Burns Coleman 《美学与艺术评论杂志》2001,59(4):385-402
126.
Beyond the reactive‐proactive dichotomy: Rage,revenge, reward,and recreational aggression predict early high school bully and bully/victim status
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Kevin C. Runions Christina Salmivalli Therese Shaw Sharyn Burns Donna Cross 《Aggressive behavior》2018,44(5):501-511
127.
Richard E. Heyman Cary S. Kogan Heather M. Foran Samantha C. Burns Amy M. Smith Slep Alexandra K. Wojda Jared W. Keeley Tahilia J. Rebello Geoffrey M. Reed 《International Journal of Clinical and Health Psychology》2018,18(2):113-123
Background/Objective: Intimate partner relationship problems and intimate partner abuse and neglect — referred to in this paper as “relational problems and maltreatment” — have substantial and well-documented impact on both physical and mental health. However, classification guidelines, such as those found in the International Classification of Diseases (ICD-10), are vague and unlikely to support consistent application. Revised guidelines proposed for ICD-11 are much more operationalized. We used standardized clinical vignette conditions with an international panel of clinicians to test if ICD-11 changes resulted in improved classification accuracy. Method: English-speaking mental health professionals (N = 738) from 65 nations applied ICD-10 or ICD-11 (proposed) guidelines with experimentally manipulated case presentations of presence or absence of (a) individual mental health diagnoses and (b) relational problems or maltreatment. Results: ICD-11, compared with ICD-10, guidelines resulted in significantly better classification accuracy, although only in the presence of co-morbid mental health problems. Clinician factors (e. g., gender, language, world region) largely did not impact classification performance. Conclusions: Despite being considerably more explicated, raters’ performance with ICD-11 guidelines reveals training issues that should be addressed prior to the release of ICD-11 in 2018 (e. g., overriding the guidelines with pre-existing archetypes for relationship problems and physical and psychological abuse). 相似文献
128.
In the study reported here an attempt was made to confirm, on a more heterogeneous group of civilian patients, some previous work on sedation threshold and spiral after-effect in young military patients. Sedation threshold and spiral after-effect data were collected in thirty-eight neurotic and nine psychotic patients. The main findings of the study were as follows: (1) The practicability and reliability of the sedation threshold technique used is not restricted to the experimental setting in which it was originally devised. The method can on the contrary be applied under a variety of clinical conditions. (2) No significant differences were found in the uniformly high sedation threshold and spiral aftereffect scores of patients suffering from neurotic depression, obsessional neurosis, and chronic anxiety. Further, civilian dysthymics as a whole did not differ significantly on either test from military dysthymics. The previous work on neurotics was thus confirmed. (3) Previous findings (with military psychotics) of a significant negative correlation between sedation threshold and spiral after-effect were confirmed in the present group of schizophrenic patients.
The advantages of a psychophysiological approach to personality were reaffirmed and the possible usefulness of the sedation threshold and spiral after-effect as tools for differential diagnosis was discussed. 相似文献
129.
Rats were runway trained on each of two 3-trial series of reward outcomes. The series are labeled XNY and ZNN, for which X represents a trial that was rewarded with Noyes pellets and N represents a trial that ended with no reward. Units of distinctively flavored breakfast cereals served as reward on trials labeled Y and Z. One group (Floor) had each series occur with a correlated runway floor, either smooth and black or rough and white. For a second group (Memory), the floor cue was uncorrelated with series. Animals in both groups learned to approach the goal rapidly on the 1st trials of the 2 series and slowly on the 2nd trials, but only Group Floor learned to differentiate the 3rd trials of the series. These results recommend a view of serial learning that emphasizes the role played by information about the ordinal position of series items. 相似文献
130.
Characterizing developmental changes in children's dual-task performance has been problematic because differences in divided attention abilities are easily confounded with differences in overall capacity. Two experiments showed that after individual differences in children's capacity for single-task performance were controlled for, age differences between second- (M = 8.1 years) and fifth-grade (M = 11.1 years) children did not exist in dual-task performance when tasks were of equal priority. However, when tasks had different priorities, only fifth-grade children could differentially allocate attention in the dual task. Results are discussed within the coordination hypothesis framework (see A. F. Kramer & J. L. Larish, 1996), which suggests that changes in dual-task performance with aging are due to changes in the ability to coordinate and control the allocation of attention. It is argued that linking the investigations of children's attention with research on attention and aging provides both methodological and theoretical benefits. 相似文献