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排序方式: 共有229条查询结果,搜索用时 15 毫秒
51.
The authors investigated the extent to which Health Belief Model (HBM) measures can be used to predict subsequent sexual activity and consistency of condom use among teenagers, especially those who report having new sex partners. Results from a longitudinal survey of sex behavior and HIV-relevant cognitions among 258 sexually active 16 and 18 year olds in Dundee, Scotland, are reported. Participants responded to a confidential postal questionnaire on their demographic characteristics, previous sexual experience, prior condom use, beliefs specified by the HBM, peer norms regarding condom use, and condom use intentions. Measures of sexual behavior and condom use consistency were then included in a follow-up questionnaire 1 year later. Demographic and HBM measures, as determined through discriminant analysis, did not account for significant proportions of variance in the consistency of condom use or mediate the effects of prior sexual experience or demographic measures. The respondents who reported more frequent sexual intercourse were less likely to use condoms consistently while those who had used condoms previously reported more consistent use. Female respondents were less likely than the young men to follow through upon their intentions to consistently use condoms. 相似文献
52.
Stemmons Mercer V Sahrmann SA Diggles-Buckles V Abrams RA 《Journal of motor behavior》1997,29(3):243-253
In this study, differences among age groups in the postural adjustments associated with a stepping task were identified. Twenty subjects from each of 3 age groups, children (8-12 years), young adults (25-35 years), and older adults (65ndash73 years), performed the task in 2 movement contexts: place and step. In place, the subject simply lifted the foot and placed it on the step. In step, the subject lifted the foot, placed it on the step, and stepped up onto the step. Latencies of postural and focal muscle activation were determined by using surface electromyography and pressure switches. Center of pressure (CP) data were obtained by using a force platform. Subjects in all 3 age groups consistently demonstrated postural adjustments before movement initiation. Children displayed longer postural latencies than young adults as well as disproportionately large values for CP path length. Older adults showed prolonged postural-focal latencies and decreased CP excursions compared with the 2 younger age groups. These results suggest that maturation of coordination between posture and movement may not be fully complete in 8- to l2-year-olds and that increased restraint characterizes the performance of postural adjustments in healthy persons over 65 years of age. 相似文献
53.
R A Abrams D E Meyer S Kornblum 《Journal of experimental psychology. Human perception and performance》1990,16(2):248-267
Three experiments are reported in which Ss produced rapid wrist rotations to a target while the position of their eyes was being monitored. In Experiment 1, Ss spontaneously executed a saccadic eye movement to the target around the same time as the wrist began to move. Experiment 2 revealed that wrist-rotation accuracy suffered if Ss were not allowed to move their eyes to the target, even when visual feedback about the moving wrist was unavailable. In Experiment 3, wrist rotations were equally accurate when Ss produced either a saccadic or a smooth-pursuit eye movement to the target. However, differences were observed in the initial-impulse and error-correction phases of the wrist rotations, depending on the type of eye movement involved. The results suggest that aimed limb movements use information from the oculomotor system about both the static position of the eyes and the dynamic characteristics of eye movements. Furthermore, the information that governs the initial impulse is different from that which guides final error corrections. 相似文献
54.
K J Klose J S Augenstein N Schneiderman K Manas B Abrams L J Bloom 《Journal of comparative psychology (Washington, D.C. : 1983)》1975,89(7):810-818
Changes in heart rate and in systolic and diastolic blood pressures were examined in eight rhesus monkeys during six sessions of differential classical conditioning. The conditioned stimuli consisted of tones differing in frequency and the unconditioned stimuli consisted of tail shock. Both the conditioned responses (CRS) and unconditioned responses (UCRs) consisted of increases in heart rate and in systolic and diastolic pressures, but blood pressure CRs sometimes occurred in the absence of heart rate CRs. Graded doses of the selective blocking agents propranolol, phentolamine, and atropine methylnitrate were systemically administered to four of the monkeys prior to additional conditioning sessions. The results suggested that the CRs and UCRs were mediated by both sympathetic and parasympathetic influences. 相似文献
55.
Programming saccadic eye movements 总被引:2,自引:0,他引:2
R A Abrams J Jonides 《Journal of experimental psychology. Human perception and performance》1988,14(3):428-443
This article addresses questions about the preparatory processes that immediately precede saccadic eye movements. Saccade latencies were measured in a task in which subjects were provided partial advance information about the spatial location of a target fixation. In one experiment, subjects were faster in initiating saccades when they knew either the direction or amplitude of the required movement in advance compared to a condition with equal uncertainty about the number of potential saccade targets but without knowledge of the parameters required to execute the movement. These results suggest that the direction and amplitude for an upcoming saccade were calculated separately, and not in a fixed serial order. In another experiment, subjects appear to have programmed the saccades more holistically--with computations of direction and amplitude parameters occurring simultaneously. The implications of these results for models of eye movement preparation are discussed. 相似文献
56.
57.
Psychosocial stress and coping in smokers who relapse or quit 总被引:2,自引:0,他引:2
Relapse remains a major problem in successful smoking cessation. This study evaluated selected responses and coping skills in male and female quitters and relapsers in four situational contexts: general social competence, smoking-specific "high-risk-for-relapse" situations, social anxiety, and relaxation. Results showed that quitters coped better than relapsers with intrapersonal (e.g., negative mood) smoking-specific situations. Quitters had lower heart rates than relapsers during relaxation and intrapersonal situations and had lower anxiety scores at the end of the procedures. Women showed more stress and less confidence in their ability to cope than did men. Groups did not differ in responses to the general social competence and social anxiety procedures. Results are discussed in the context of the importance of considering individual differences in responses and in coping skills for treatment and relapse prevention for smokers. 相似文献
58.
Debunking myths about self-quitting. Evidence from 10 prospective studies of persons who attempt to quit smoking by themselves 总被引:13,自引:0,他引:13
S Cohen E Lichtenstein J O Prochaska J S Rossi E R Gritz C R Carr C T Orleans V J Schoenbach L Biener D Abrams 《The American psychologist》1989,44(11):1355-1365
This article examines data from 10 longterm prospective studies (N greater than 5,000) in relation to key issues about the self-quitting of smoking, especially those discussed by Schachter. When a single attempt to quit was evaluated, self-quitters' success rates were no better than those reported for formal treatment programs. Light smokers (20 or less cigarettes per day) were 2.2 times more likely to quit than heavy smokers. The cyclical nature of quitting was also examined. There was a moderate rate (mdn = 2.7%) of long-term quitting initiated after the early months (expected quitting window) of these studies, but also a high rate (mdn = 24%) of relapsing for persons abstinent for six months. The number of previous unsuccessful quit attempts was unrelated to success in quitting. Finally, there were few occasional smokers (slips) among successful long-term quitters. We argue that quitting smoking is a dynamic process, not a discrete event. 相似文献
59.
60.
Are you talking to the future me? The moderator role of future self‐relevance on the effects of aging salience in retirement savings 下载免费PDF全文
Sibila Marques João Mariano Maria Luísa Lima Dominic Abrams 《Journal of applied social psychology》2018,48(7):360-368
Increasing the salience of aging has been shown to be a promising strategy to promote young adults' interest in saving for retirement. However, the processes responsible for this effect are still largely unknown. We hypothesize that increased savings choices will only occur when participants are also engaged in self‐relevant thoughts about their own future. Participants were exposed to a fictitious website advertising financial products. Study 1 (n = 78; Mage = 20.87) primed age salience and future self‐relevance orthogonally and showed that priming aging only caused increases in retirement investment decisions when self‐relevance was also high. Study 2 (n = 91; Mage = 23.40) tested whether the effects of age priming were due specifically to age or to a broader focus on the future. The study confirmed that investment decision effects are specific to exposure to the aging prime and not merely priming the future. The effects were also specific to investment in retirement funds and not just depositing money in a checking account. These findings have both theoretical and practical implications for the psychology of aging and retirement planning. 相似文献