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31.
When a sound occurs at a predictable time, it gets processed more efficiently. Predictability of the temporal structure of acoustic inflow has been found to influence the P3b of event‐related potentials in young adults, such that highly predictable compared to less predictable input leads to earlier P3b peak latencies. In our study, we wanted to investigate the influence of predictability on target processing indexed by the P3b in children (10–12 years old) and young adults. To do that, we used an oddball paradigm with two conditions of predictability (high and low). In the High‐predictability condition, a high‐pitched target tone occurred most of the time in the fifth position of a five‐tone pattern (after four low‐pitched non‐target sounds), whereas in the Low‐predictability condition, no such rule was implemented. The target tone occurred randomly following 2, 3, 4, 5, or 6 non‐target tones. In both age groups, reaction time to predictable targets was faster than to non‐predictable targets. Remarkably, this effect was largest in children. Consistent with the behavioral responses, the onset latency of the P3b response elicited by targets in both groups was earlier in the predictable than the unpredictable conditions. However, only the children had significantly earlier peak latency responses for predictable targets. Our results demonstrate that target stimulus predictability increases processing speed in children and adults even when predictability was only implicitly derived by the stimulus statistics. Children did have larger effects of predictability, seeming to benefit more from predictability for target detection. 相似文献
32.
After-School Supervision, Psychosocial Impact, and Adolescent Smoking and Alcohol Use in China 总被引:2,自引:0,他引:2
Jie Wu Weiss Ph.D. Ipei Liu M.S. M.P.H. Steve Sussman Ph.D. Paula Palmer Ph.D. Jennifer B. Unger Ph.D. Steven Cen M.S. Chih-Ping Chou Ph.D. Anderson Johnson Ph.D. 《Journal of child and family studies》2006,15(4):442-459
We examined effects of self-care after school hours and psychosocial factors on cigarette smoking and alcohol use among adolescents in China. Survey data were obtained from 4734 7th and 11th grade students from seven cities across China. Students were queried about the frequency and quantity of unsupervised self-care after school in an average week. Tobacco and alcohol usage were also obtained. Odds ratios were calculated to determine the strength of association between unsupervised self-care after school and substance use. Results indicated that the amount of self-care after-school (how many days and how many hours per week) was significantly associated with increased risk for smoking and alcohol use among Chinese adolescents. These associations remained significant even after controlling for anxiety, depressive symptoms, and peer influence. The interaction between unsupervised self-care after school and peer influence indicated that unsupervised self-care after school is a stronger risk factor for smoking among adolescents with pro-smoking friends. The findings suggest that substance use prevention programs for youth in China should try to enhance parental monitoring. As it may not be feasible for families to revert to a lifestyle that includes supervision by relatives, other approaches such as organized after-school care are worthy of consideration. 相似文献
33.
Steve Sussman Louise A. Rohrbach Silvana Skara Clyde W. Dent 《Journal of applied social psychology》2004,34(12):2452-2468
Most studies that examine the prediction of graduation status among teens have examined those who attend regular high schools. The present study reports the prediction of high school graduation status 5 years later among 646 youth who attended alternative (continuation) high schools at baseline. Those youth at baseline who: (a) reported less intention to use soft drugs (cigarettes, alcohol, or marijuana) during the next year; (b) suffered relatively few drug‐related consequences during the last year; (c) were relatively less likely to have carried a weapon (knife or gun) in the last year; (d) reported feeling relatively hopeful about the future; and (e) were older were more likely to self‐report having graduated continuation high school 5 years later. These results suggest that the consequences of drug use, not drug use per se, other illegal behavior, and a sense of well‐being are important predictors of graduation among groups of high‐risk teens. Problem behavior and resiliency theories are offered as potential explanations of these findings. 相似文献
34.
This study tested the proposition that the success of an intelligent female in the third world is attributed more to ability and less to nonability factors than the success of her male counterpart. To this end, subjects from developing nations attributed the success of an American or third world male or female of average or high intelligence to ability, effort, luck, and task ease. Results indicated that subjects attributed the success of the intelligent third world female more to ability and less to luck than the success of the comparable male. In addition, gender differences were found which indicated that under some circumstances the success of the female more than that of the male is attributed to task ease. 相似文献
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Alexander J. Rosen Steven Sussman Kim T. Mueser John S. Lyons John M. Davis 《Journal of psychopathology and behavioral assessment》1981,3(1):25-36
Objectively defined, publicly observable behaviors were time sampled for hospitalized psychiatric patients and normal controls in three distinct environmental contexts: lunch time, free time, and gym time. The behaviors sampled included body activity, extremity activity, proximity, social interactions, participation, visual scanning, laughing/smiling, and idiosyncratic behavior. Patient behaviors were recorded during both a drug-free baseline period and a subsequent medication period. The data suggest that consistent and reliable differences between patients and normals in most behaviors can be observed and that environmental context is an important determinant of these differences. Results are discussed in terms of their implications for assessment procedures and treatment decisions.These investigations were supported in part by State of Illinois Department of Mental Health and Developmental Disabilities Grants RD836-13 and RD622-02 to the first author. The cooperation of the Illinois State Psychiatric Institute staff is gratefully acknowledged. 相似文献
37.
Robert W. Sussman 《Zygon》1999,34(3):453-471
Since the discovery of the first man-ape, many have assumed that the earliest humans were hunters and that this was associated with a "killer instinct." The myth of "man the hunter" was repeated in the 1960s in anthropology texts and popular literature. In the 1970s it was adopted by sociobiologists to explain human nature. "Man the hunter" is used to explain not only human biology but also human morality. The morals described, however, often reflect ancient beliefs and appear to be new ways of justifying old morality codes. The newest version of this myth is presented in a recent book, Demonic Males . I will discuss various accounts of this myth and the evidence used to justify them, and will specifically critique the arguments presented in Demonic Males . 相似文献
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A neuronal model of vowel normalization and representation 总被引:1,自引:0,他引:1
H M Sussman 《Brain and language》1986,28(1):12-23
A speculative neuronal model for vowel normalization and representation is offered. The neurophysiological basis for the premise is the "combination-sensitive" neuron recently documented in the auditory cortex of the mustached bat (N. Suga, W. E. O'Neill, K. Kujirai, and T. Manabe, 1983, Journal of Neurophysiology, 49, 1573-1627). These neurons are specialized to respond to either precise frequency, amplitude, or time differentials between specific harmonic components of the pulse-echo pair comprising the biosonar signal of the bat. Such multiple frequency comparisons lie at the heart of human vowel perception and categorization. A representative vowel normalization algorithm is used to illustrate the operational principles of the neuronal model in accomplishing both normalization and categorization in early infancy. The neurological precursors to a phonemic vocalic system is described based on the neurobiological events characterizing regressive neurogenesis. 相似文献