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121.
Mary C. Potter Brad Wyble Carl Erick Hagmann Emily S. McCourt 《Attention, perception & psychophysics》2014,76(2):270-279
The visual system is exquisitely adapted to the task of extracting conceptual information from visual input with every new eye fixation, three or four times a second. Here we assess the minimum viewing time needed for visual comprehension, using rapid serial visual presentation (RSVP) of a series of six or 12 pictures presented at between 13 and 80 ms per picture, with no interstimulus interval. Participants were to detect a picture specified by a name (e.g., smiling couple) that was given just before or immediately after the sequence. Detection improved with increasing duration and was better when the name was presented before the sequence, but performance was significantly above chance at all durations, whether the target was named before or only after the sequence. The results are consistent with feedforward models, in which an initial wave of neural activity through the ventral stream is sufficient to allow identification of a complex visual stimulus in a single forward pass. Although we discuss other explanations, the results suggest that neither reentrant processing from higher to lower levels nor advance information about the stimulus is necessary for the conscious detection of rapidly presented, complex visual information. 相似文献
122.
Beatriz Gil-Gómez de Liaño Mary C. Potter Carmen Rodríguez 《Psychological research》2014,78(1):124-135
The present paper examines the effects of memory contents and memory load in rapid serial visual presentation (RSVP) speeded tasks, trying to explain previous inconsistent results. We used a one target (Experiment 1) and a two-target (Experiment 2) RSVP task with a concurrent memory load of one or four items, in a dual-task paradigm. A relation between material in working memory and the target in the RSVP impaired the identification of the target. In Experiments 3 and 4, the single task was to determine whether any information in memory matched the target in the RSVP, while varying the memory load. A match was detected faster than a non-match, although only when there was some distance between targets in the RSVP (Experiment 4). The results suggest that memory contents automatically capture attention, slowing processing when the memory contents are irrelevant to the task, and speeding processing when they are relevant. 相似文献
123.
Anka A. Vujanovic Ashley S. Hart Carrie M. Potter Erin C. Berenz Barbara Niles Amit Bernstein 《Journal of psychopathology and behavioral assessment》2013,35(2):235-243
The present investigation evaluated the main and interactive effects of distress tolerance and negative affect intensity in relation to posttraumatic stress disorder (PTSD) symptom severity and symptom cluster severity. Participants were 190 trauma-exposed adults (52.6 % women; M age?=?25.3 years, SD?=?11.4) recruited from the community. Distress tolerance (i.e., perceived ability to withstand distressing emotional states) demonstrated significant incremental associations with global PTSD symptom severity as well as Re-Experiencing, Emotional Numbing, and Hyperarousal symptom cluster severity. Negative affect intensity (i.e., perceived intensity of negative emotional responses) demonstrated significant incremental associations with each of the PTSD symptom outcomes. Moreover, the incremental interactive effect of distress tolerance and negative affect intensity was significantly associated with PTSD symptom severity as well as PTSD—Emotional Numbing symptom cluster severity. These incremental effects were evident after accounting for the variance explained by anxiety sensitivity (i.e., fear of anxiety-related sensations). Post hoc probing analyses supported the moderating role of negative affect intensity in the association between distress tolerance and PTSD symptom severity, such that low levels of distress tolerance, in the context of elevated levels of negative affect intensity, were associated with the greatest levels of PTSD symptoms. 相似文献
124.
Potter MC Staub A Rado J O'Connor DH 《Journal of experimental psychology. Human perception and performance》2002,28(5):1163-1175
When viewing a rapid sequence of pictures, observers momentarily understand the gist of each scene but have poor recognition memory for most of them (M. C. Potter, 1976). Is forgetting immediate, or does some information persist briefly? Sequences of 5 scenes were presented for 173 ms/picture; when yes-no testing began immediately, recognition was initially high but declined markedly during the 10-item test. With testing delays of 2 or 6 s, the decline over testing was less steep. When 10 or 20 pictures were presented, there was again a marked initial decline during testing. A 2-alternative forced-choice recognition test produced similar results. Both the passage of time and test interference (but not presentation interference) led to forgetting. The brief persistence of information may assist in building a coherent representation over several fixations. 相似文献
125.
Development of personality in early and middle adulthood: set like plaster or persistent change? 总被引:1,自引:0,他引:1
Srivastava S John OP Gosling SD Potter J 《Journal of personality and social psychology》2003,84(5):1041-1053
Different theories make different predictions about how mean levels of personality traits change in adulthood. The biological view of the Five-factor theory proposes the plaster hypothesis: All personality traits stop changing by age 30. In contrast, contextualist perspectives propose that changes should be more varied and should persist throughout adulthood. This study compared these perspectives in a large (N = 132,515) sample of adults aged 21-60 who completed a Big Five personality measure on the Internet. Conscientiousness and Agreeableness increased throughout early and middle adulthood at varying rates; Neuroticism declined among women but did not change among men. The variety in patterns of change suggests that the Big Five traits are complex phenomena subject to a variety of developmental influences. 相似文献
126.
This review defines educational underachievement and presents information confirming the low reading and even lower language
development of profoundly hearing-impaired children. It then discusses the role of intelligence, learning ability, and communication
factors in this educational underachievement. Teacher and pupil classroom communication are identified as major factors in
the poor educational performance of hearing-impaired children. Some research needs are discussed. 相似文献
127.
Repetition blindness (Kanwisher, 1986, 1987) is the failure to detect repetitions of words in lists presented in rapid serial visual presentation (RSVP). Two questions were investigated in the present study. First, if repetition blindness is not found with auditory presentation, it would support a specifically visual account of the effect. Second, if displacement of the two instances in visual space eliminates repetition blindness, it would suggest that repetition blindness is restricted to instances in which identical stimuli are distinguished soley by temporal differences. In Experiment 1, the subjects omitted second occurrences of repeated words in verbatim recall of rapid sentences presented visually (in RSVP), but not auditorily (using compressed speech), indicating that repetition blindness is a modality-specific phenomenon. In Experiments 2 and 3, repetition blindness was observed even when two occurrences of a written word were presented in different locations, showing that distinct locations do not guarantee token individuation. The results are discussed within a model that distinguishes between processes of type recognition and token individuation. 相似文献
128.
Research examined what decision makers do when, after screening out unacceptable options in preparation for making a choice from among the acceptable survivors, they find that all of the survivors have become unavailable and that no new options are forthcoming. Subjects were presented options in the form of rooms to rent and were required to screen them to prepare a "short list" from which a choice could be made. They also rated the importance of the room′s characteristics. Then they were told that the rooms on the short list all had been rented, and that no new rooms had become available so they would have to create a new short list from among the previously rejected rooms. Then they rescreened the rejected options and rerated the importance of the characteristics of the rooms. It was found that nearly 90% of the subjects would prefer to begin again with new options rather than rescreen rejected options. It also was found that when forced to rescreen rejected options, subjects reduced their ratings of the importance of the options′ characteristics, apparently in an effort to compensate, at least in part, for having to select options that, only moments before, had been regarded as unacceptable. Efforts to discourage ratings reductions proved futile. Implications of the results for screening and choice are discussed. 相似文献
129.
130.
The dialogue between medicine and religion has been expected to intensify. To test the degree of interaction empirically, the contents of four clinical medical journals for the years 1981 to 1991 were examined for reference to religious themes. Religion was important in 13 of 17,345 articles. Reasons proposed for this relative neglect are hostility, lack of interest, inadequate empirical studies, and the substitution of ethics and humanities as surrogates for religion. Scholars of religion are encouraged to submit relevant material to medical journals. 相似文献