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101.
Melina A. Kunar Randall Carter Michael Cohen Todd S. Horowitz 《Psychonomic bulletin & review》2008,15(6):1135-1140
Recent research has shown that holding telephone conversations disrupts one’s driving ability. We asked whether this effect
could be attributed to a visual attention impairment. In Experiment 1, participants conversed on a telephone or listened to
a narrative while engaged in multiple object tracking (MOT), a task requiring sustained visual attention. We found that MOT
was disrupted in the telephone conversation condition, relative to single-task MOT performance, but that listening to a narrative
had no effect. In Experiment 2, we asked which component of conversation might be interfering with MOT performance. We replicated
the conversation and single-task conditions of Experiment 1 and added two conditions in which participants heard a sequence
of words over a telephone. In the shadowing condition, participants simply repeated each word in the sequence. In the generation
condition, participants were asked to generate a new word based on each word in the sequence. Word generation interfered with
MOT performance, but shadowing did not. The data indicate that telephone conversation disrupts attention at a central stage,
the act of generating verbal stimuli, rather than at a peripheral stage, such as listening or speaking. 相似文献
102.
Gearhart RF Lagally KM Riechman SE Andrews RD Robertson RJ 《Perceptual and motor skills》2008,106(3):893-903
The constant-RPE tracking model monitors progress over the course of exercise training. During aerobic exercise, prior work using this model has demonstrated similar relative intensities pre- and posttraining, while the absolute workload increases posttraining. However, the prediction equation associated with these changes has not been examined during resistance training. 22 men and 27 women (M age 64 yr.) participated in a 12-wk. resistance training. Orientation determined resistances associated with RPEs of 4, 5-6, 7-8, and 9 on the OMNI-Resistance Exercise Scale for each of seven exercises for each participant. Individuals trained 3 days a week for 12 wk. Linear regression was used to calculate percent of 1-repetition maximum (%1-RM) at RPE 4, 6, and 8 for the exercises. Paired sample t tests, comparing pre- and posttraining %1-RMs at each RPE, indicated that posttraining %1-RMs were higher for RPE 4 and 6 for each exercise, while at RPE 8, results were significant for only 3 exercises. Thus for at least the RPE 4 and 6, the constant RPE tracking model is appropriate for resistance exercise; however, the equation of prediction appears to differ from that for aerobic exercise. Development of a new prediction equation may be necessary to track relative strength in older adults. 相似文献
103.
Schechter DS Myers MM Brunelli SA Coates SW Zeanah CH Davies M Grienenberger JF Marshall RD McCaw JE Trabka KA Liebowitz MR 《Infant mental health journal》2006,27(5):429-447
This study explored the use of a brief experimental intervention that integrates principles of infant-parent psychotherapy, videofeedback, controlled exposure to child distress in the context of parental posttraumatic stress disorder (PTSD), and stimulation of parental reflective functioning (RF). The Clinician Assisted Videofeedback Exposure Session (CAVES) was applied to 32 interpersonal violence-exposed mothers of very young children (8-50 months) with respect to change of maternal perception of her child. While we found no significant reduction over two videotaped assessment visits with a mental health professional, we did find a significant reduction in the degree of negativity of maternal attributions towards her child following the videotaped visit focused on the CAVES (p<.01). Maternal RF, a mother's capacity to think about mental states in herself and her child, accounted for 11% of the variance in reduction of maternal negativity after accounting for baseline levels of negativity. Clinician-assisted videofeedback appears to support emotional self-regulation of mothers with violence-related PTSD. Focusing with a therapist on videofeedback of child separation distress exposes mothers to avoided mental states of helplessness and perceived loss of protection. Negative maternal attributions may mark violent trauma-associated emotion dysregulation and projected self-representations of the maltreated mother. 相似文献
104.
As some states allow motorists to use hands-free cell phones only while driving, this study was done to examine some braking responses to see if conversing on these two types of cell phones affects quick responding. College-age drivers (n=25) completed reaction time trials in go/no-go situations under three conditions: control (no cell phone or conversation), and conversing on hands-free and hand-held cell phones. Their task involved moving the right foot from one pedal to another as quickly as possible in response to a visual signal in a lab setting. Significantly slower reaction times, movement times, and total response times were found for both cell phone conditions than for the control but no differences between hands-free and hand-held phone conditions. These findings provide additional support that talking on cell phones, regardless if it is hands-free or hand-held, reduces speed of information processing. 相似文献
105.
Hendrick I 《The Psychoanalytic quarterly》2007,76(2):387-414; discussion 415-38
106.
In two studies, we document “failure to warn”—a reduced likelihood of warning Black students against potential academic difficulty compared to White students. In both studies, participants placed in the role of academic advisors saw a highly challenging academic course plan, attributed to either a Black or a White student, and gave Black students less warning about the potential negative consequences of taking on the proposed plan. Study 1 (N = 172) demonstrates this effect using undergraduate peer academic advisors, and Study 2 (N = 58) provides evidence that this effect is moderated by Internal Motivation to Respond Without Prejudice (Plant & Devine, 1998), suggesting that this effect is driven by the fear that discouraging an ambitious Black student might reflect prejudice. This well-intentioned concern can have the ironic consequence of leading the recipients of this advice into academic difficulties. 相似文献
107.
108.
Susan Randall Armel Jeanna McCuaig Amy Finch Rochelle Demsky Tony Panzarella Joan Murphy Barry Rosen 《Journal of genetic counseling》2009,18(4):366-378
The number of individuals receiving genetic counseling for hereditary breast and ovarian cancer syndrome has steadily risen.
To triage patients for genetic counseling and to help reduce the amount of time needed by a genetic counselor in direct patient
contact, many clinics have implemented the use of family history questionnaires. Although such questionnaires are widely used,
scant literature exists evaluating their effectiveness. This article explores the extent to which family history questionnaires
are being used in Ontario and addresses the utility of such questionnaires in one familial cancer clinic. By comparing the
pedigrees created from questionnaires to those updated during genetic counseling, the accuracy and effectiveness of the questionnaires
was explored. Of 121 families recruited into the study, 12% acquired changes to their pedigree that led to a revised probability
estimate for having a BRCA1 or BRCA2 mutation and 5% acquired changes that altered their eligibility for genetic testing.
No statistically significant difference existed between the eligibility for genetic testing prior to and post counseling.
This suggests that family history questionnaires can be effective at obtaining a family history and accurately assessing eligibility
for genetic testing. Based on the variables that were significantly associated with a change in probability estimate, we further
present recommendations for improving the clarity of such questionnaires and therefore the ease of use by patients. 相似文献
109.
The accuracy of first impressions was examined by investigating judged construct (negative affect, positive affect, the Big five personality variables, intelligence), exposure time (5, 20, 45, 60, and 300 s), and slice location (beginning, middle, end). Three hundred and thirty four judges rated 30 targets. Accuracy was defined as the correlation between a judge’s ratings and the target’s criterion scores on the same construct. Negative affect, extraversion, conscientiousness, and intelligence were judged moderately well after 5-s exposures; however, positive affect, neuroticism, openness, and agreeableness required more exposure time to achieve similar levels of accuracy. Overall, accuracy increased with exposure time, judgments based on later segments of the 5-min interactions were more accurate, and 60 s yielded the optimal ratio between accuracy and slice length. Results suggest that accuracy of first impressions depends on the type of judgment made, amount of exposure, and temporal location of the slice of judged social behavior. 相似文献
110.