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61.
The relation between various ERP components generated during encoding of a word and its subsequent recall were investigated using a “rote” serial-order and an “elaborative” category memory task. Words (flashed separately) were time-locked to EEG recordings from 21 cortical sites. ERP components from the five subjects having the highest recall scores were compared to the five lowest scoring subjects. Results based on the P200 peak amplitude data as well as the N400 and late positive component peak amplitude and latency data suggest that anterior and posterior distributional differences are elicited during encoding of words for rote and elaborative memory tasks. Furthermore, strong individual differences in these patterns were found as a function of task. A tentative argument was made that the obtained anterior and posterior differences may index different word feature selection and encoding processes, which are differentially utilized by high and low recallers. 相似文献
62.
Female singers were recorded singing a song in a high and/or a low range. Infants preferred to listen to the higher-pitched versions, suggesting that infants' preference for infant-directed singing and speech is mediated in part by a preference for higher pitch. 相似文献
63.
James E. Dunn 《Psychometrika》1973,38(1):141-143
A counterexample is produced to a conjecture by K. G. Jöreskog concerning sufficiency conditions for uniqueness of a restricted factor matrix. A substitute condition is stated and proved for the most common situation where the restricted elements are specified to be zero. 相似文献
64.
Robert Dunn 《Ratio》2000,13(1):13-27
There are, apparently, two inherited stories of intentional action. On the motivational story, intentional agents are pursuers of goals. On the evaluative story, intentional agents are pursuers of value. In a spirit of unification, we might try to supplement the motivational story with the evaluative one – or even collapse the former into the latter. The problem with such moves is that they cannot accomodate certain pathologies of agency. Thus, they convert apparently perverse agents – like Satan and self-haters – into closet lovers of the good. I argue that pathological agents like Satan and self-haters are not lovers of the good. They are just lovers of success in action. We can make sense of such agents as practical reasoners because the cares that constitute us as practical reasoners are plural. 相似文献
65.
Jacqueline Dunn Kirk Lockwood Don E. Williams Shavon Peacock 《Behavioral Interventions》1997,12(4):163-172
”Fred“, a man with profound mental retardation who was 24 years old at the beginning of this study, was referred for treatment of rumination. A number of minimally restrictive interventions, including administration of Zantac, extra fluids, and delivery of peanut butter after meals, had been used without success. In April of 1989 Fred began a satiation diet with ad libitum access to starchy foods or to fruits and vegetables, in addition to his regular meals. His baseline weight was 82 pounds and he ruminated during 58% of 10 s intervals measured during 20 min post-meal observations. During the first month of the satiation diet, Fred's ruminating declined to 6% of measured intervals, he consumed a mean of 163 fluid ounces of extra food per day, and his weight increased to 90 pounds. After 4 months' treatment, Fred's ruminating had declined to zero, his food consumption had stabilized at approximately 65 extra ounces of food per day, and his weight had stabilized at about 120 pounds. Starting in August 1990, in an effort to minimize weight gain, extra food was limited to 50% of Fred's ad libitum food consumption (averaged over the previous 6 weeks). Fred's weight gradually declined to about 100 pounds with zero rumination over the next two years. In August 1992 Fred's ruminating accelerated to 17% of intervals and he was again offered ad libitum food access. Over the next 7 months, rumination declined to zero and his weight increased slightly to about 105 pounds. This study shows that rumination that had not responded to less restrictive procedures was suppressed for 7 years via dietary satiation. Although dietary satiation is not without some risk, Fred has suffered no adverse effects from the procedure, other than gaining approximately one-third of his baseline weight. © 1997 John Wiley & Sons, Ltd. 相似文献
66.
Sarah A. Thomas Tristan Wilson Anjali Jain Danielle E. Deros Miji Um Joanna Hurwitz Irene Jacobs Lindsay Myerberg Katherine B. Ehrlich Emily J. Dunn Amelia Aldao Ryan Stadnik Andres De Los Reyes 《Journal of child and family studies》2017,26(12):3288-3302
Parent–adolescent conflict poses risk for youth maladjustment. One potential mechanism of this risk is that stress in the form of increased arousal during conflict interactions results in adolescents’ impaired decision-making. However, eliciting consistent adolescent stress responses within laboratory-based tasks of parent–adolescent conflict (i.e., conflict discussion tasks) is hindered by task design. This limitation may stem from how conflict topics are assessed and selected for discussion. Within a sample of 47 adolescents (ages 14–17) and parents, we investigated whether a modified version of a conflict discussion task could elicit physiological (i.e., arousal) and behavioral (i.e., hostility) displays of adolescents’ conflict-related stress responses. We assessed parent–adolescent conflict via structured interview to identify topics for dyads to discuss during the task. We randomly assigned dyads to complete a 5-min task to discuss either a putatively benign topic (i.e., control condition) or a conflict topic while undergoing direct assessments of continuous arousal. Trained raters coded dyad members’ hostile behavior during the task. Adolescents in the conflict condition exhibited significantly greater levels of arousal than adolescents in the control condition. We observed an interaction between discussion condition and baseline conflict. Specifically, higher baseline conflict predicted greater hostile behavior for adolescents in the conflict condition, yet we observed the inverse relation for adolescents in the control condition. Our modified laboratory discussion task successfully elicited both physiological and behavioral displays of adolescent conflict-related stress. These findings have important implications for leveraging experimental paradigms to understand causal links between parent–adolescent conflict and adolescent psychopathology, and their underlying mechanisms. 相似文献
67.
68.
The Interplay Between Housing Stability and Child Separation: Implications for Practice and Policy 下载免费PDF全文
Debra J. Rog Kathryn A. Henderson Laurel M. Lunn Andrew L. Greer Mei Ling Ellis 《American journal of community psychology》2017,60(1-2):114-124
Greater understanding of how residential stability affects child separation and reunification among homeless families can guide both child welfare and homeless policy and practice. This article draws upon two longitudinal studies examining services and housing for homeless families and their relationship to family and housing stability. Both studies were conducted in the same state at roughly the same time with similar instruments. The first study, examining families’ experiences and outcomes following entry into the homeless service system in three counties in Washington State, found that at 18 months following shelter entry, families that are intact with their children were significantly more likely to be housed in their own housing (46%) than families that were separated from one or more of their children (31%). The second study, a quasiexperimental evaluation of a supportive housing program for homeless families with multiple housing barriers, found that the rates of reunification for Child Protective Services (CPS)‐involved families receiving supportive housing was comparable to that for families entering public housing without services, but significantly higher than the rate of reunification for families entering shelter. Taken together, the findings from both studies contribute to the evidence underscoring the importance of housing assistance to homeless families involved in the child welfare system. 相似文献
69.
The claim that humans adapt their actions in ways that avoid effortful processing (whether cognitive or physical) is a staple of various theories of human behavior. Although much work has been carried out focusing on the determinants of such behaviors, less attention has been given to how individuals evaluate effort. In the current set of experiments, we utilized the general evaluability theory to examine the evaluability of effort by examining subjective value functions across different evaluation modes. Individuals judged the anticipated effort of four task‐specific efforts indexed by stimulus rotation, items to be remembered, weight to be lifted, and stimulus degradation across joint (i.e., judged comparatively) and single evaluation modes (i.e., judged in isolation). General evaluability theory hypothesizes that highly evaluable attributes should be consistently evaluated (i.e., demonstrate similar subjective value functions) between the two modes. Across six experiments, we demonstrate that the perceived effort associated with items to be remembered, weight to be lifted, and stimulus degradation can be considered relatively evaluable, while the effort associated with stimulus rotation may be relatively inevaluable. Results are discussed within the context of subjective evaluation, internal reference information, and strategy selection. In addition, methodological implications of evaluation modes are considered. Copyright © 2017 John Wiley & Sons, Ltd. 相似文献
70.
Consistent with a family systems framework, this paper examines the clinical and research literatures to clarify the connection between chronic trauma exposure and family processes with a focus on the social ecology of low-income, urban neighborhoods. Strong empirical evidence demonstrates the impact of chronic trauma on individual family members and, in turn, on multiple family subsystems. Additionally, there is evidence that living under chronically harsh, traumatic circumstances slowly erodes family processes, specifically structure, relations, and coping. However, existing research reflects the problems inherent in sorting out relationships among multiple, often interrelated factors. Future research requires comprehensive theoretical models, such as systemic, transactional, or ecodevelopmental, along with sophisticated research designs, prospective, longitudinal or intervention, and multilevel analytic methods. 相似文献