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41.
In cart-pole balancing, one moves a cart in 1 dimension so as to balance an attached inverted pendulum. We approached perception-action and learning in this task from an ecological perspective. This entailed identifying a space of informational variables that balancers use as they perform the task and demonstrating that they improve by traversing the space to the loci of more useful variables. We presented a novel information space-including fractional derivatives of pendulum angle (e.g., halfway between angle and angular velocity)-as possible information for balancing. Fourteen college students tried to meet a criterion of balancing the pole for 30 s on 3 of 5 successive trials, up to a maximum of 150 attempts. Loci in the fractional derivative space predicted the time series of force production well. Systematic differences were seen in loci as a function of success, and systematic changes in locus were seen with learning. The fractional derivatives were shown to predict pole angles a short time interval into the future, allowing balancers to prospectively control the action and thereby nullify visuomotor delay. In addition to loci in the information space, we analyzed loci in a calibration space, reflecting the gain relating force to information. (PsycINFO Database Record (c) 2012 APA, all rights reserved).  相似文献   
42.
The purpose of this study was to examine 1) the extent to which the gender marketing of toys on the Internet replicates findings of previous studies of the gendering of toys, and 2) the extent to which toys for “both boys and girls”, a previously overlooked category of toys, share characteristics, such as color and type of toy, with toys marketed for “boys only” or for “girls only”. The sample consisted of the 410 toys listed for boys and the 208 toys listed for girls, including 91 toys that appeared on both lists, on the English language U.S. Disney Store website. The marketing of toys on the Disney Store website is important not only because of the growth in e-commerce, but also because of this company’s global domination of the children’s entertainment industry. Tabular analysis and chi-square revealed that bold colored toys, predominantly red, black, brown, or gray toys, and those that were action figures, building toys, weapons, or small vehicles typified toys for “boys only” on this U.S. website. Pastel colored toys, predominantly pink or purple toys, and those that were dolls, beauty, cosmetics, jewelry, or domestic-oriented typified toys for “girls only”. A majority of toys for “both boys and girls” were mostly “gender-neutral” in type, but they resembled toys for “boys only” in terms of their color palette, presumably to appeal to boys, who are less likely to cross gender lines than girls. The potential impact of the gendering of toys on individuals as well as limitations of this research and suggestions for future research are discussed.  相似文献   
43.
Pyramidal training involves an experienced professional training a subset of individuals who, in turn, train additional individuals. Pyramidal training is effective for training a variety of behavior-analytic skills with direct-care staff, parents, and teachers. As teachers’ roles in behavioral assessment increase, pyramidal training may be useful to improve the procedural fidelity with which teachers conduct functional analyses. In the current study, previously trained teachers taught six other teachers (trainees) to conduct standard functional analysis conditions in a pyramidal training model. All trainees quickly acquired the skills necessary to conduct attention, escape, play, and tangible conditions during analog role-plays. Trainees also implemented functional analysis conditions with fidelity in their classrooms with students. Using a pyramidal training model may help to disseminate behavior-analytic procedures.  相似文献   
44.
Youth with neurofibromatosis type 1 (NF1) have multiple, complex symptoms associated with physical, social-emotional, and cognitive difficulties. In addition, caring for a child with NF1 can be extremely challenging for parents. Since research with other chronic illness populations suggests that social support, including internet support groups (ISGs), can be beneficial, this survey study aimed to determine the attitudes and preferences of adolescents and young adults with NF1 and parents of a child with NF1 regarding ISGs. Thirty patients and 30 caregivers completed a 24-item survey about ISGs. Many patients and parents are not aware of any ISGs for NF1, but are interested in using one in the future for a variety of reasons, including to get answers to their questions about NF1, to find out about research studies, and to discuss problems and concerns about NF1. Specific concerns of interest include physical, social-emotional, and cognitive aspects of NF1. ISGs have potential as a social support intervention within the NF1 community. ISGs for the NF1 population should include patients with NF1 (or parents of children with NF1) as well as a health professional, and both chat rooms and discussion boards likely would be well-received.  相似文献   
45.
Parents of children with autism spectrum disorders may not attempt treatment, even when effective treatment options are available. Little is known about how to improve frequency of attempts to implement treatment (‘treatment adherence’). We provided 32 rural parents of young children with autism spectrum disorders with either written or video training materials about how to implement discrete‐trial instruction and compared parental adherence between the written (control) and video (experimental) groups. Parents who received video instructions adhered to the training procedures to a significantly greater extent than did parents who received written instructions, suggesting that instruction format is a predictor of training success. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
46.
47.
Whether cases of bullying should be handled in a direct, condemning mode or in a manner that does not involve blaming the perpetrator is a controversial issue among school professionals. This study compares the effectiveness of a Confronting Approach where the bully is openly told that his behavior must cease immediately to a Non-Confronting Approach where the adult shares his concern about the victim with the bully and invites him to provide suggestions on what could improve the situation. We analysed 339 cases of bullying involving 314 children from grades 1 to 9 (mean age?=?11.95). Cases were handled in 65 schools as part of the implementation of the KiVa anti-bullying program. In each school, a team of three teachers addressed cases coming to their attention by organizing discussions with the bullies using either a Confronting or a Non-Confronting Approach; schools were randomly assigned to one of the two conditions. Victims reported that bullying stopped in 78 % of the cases. Logistic regression analyses indicated that neither approach was overall more effective than the other, controlling for grade level, duration of victimization and type of aggression. The Confronting Approach worked better than the Non-Confronting Approach in secondary school (grades 7 to 9), but not in primary school (grades 1 to 6). The Confronting Approach was more successful than the Non-Confronting Approach in cases of short-term victimization, but not in cases of long-term victimization. The type of aggression used did not moderate the effectiveness of either approach.  相似文献   
48.
Although the linkage between health and marriage has been noted (e.g., Hayward and Gorman in Demography 41:87–107. doi:10.1353/dem.2004.0005, 2004; Kaplan and Kronick in J Epidemiol Community Health 60:760–765. doi:10.1136/jech.2005.037606, 2006; Schoenborn in Marital status and health: United States, 1999–2002. Advance data from vital and health statistics. National Center for Health Statistics, Hyattsville, MD, 2004), understanding the connection between neurological and behavioral phenomena in marital relationships has yet to be tackled. This pilot study attempted to address this limitation by analyzing electrical brain activity during a conflict interaction between married couples. Results generally supported the work of Lazarus (Emotion and adaptation. Oxford University Press, Oxford, 1991) and Harmon-Jones et al. (J Pers Soc Psychol 82:610–618. doi:10.1037//0022-3514.82.4.610, 2002); individuals that felt like they were in an action-possible situation revealed relatively higher left hemispheric activity in the frontal region of the brain.  相似文献   
49.
As family conflict tends to escalate during the adolescent years, the subsequent effects of adolescence on parent–child dynamics are systemically experienced, both intra- and inter-personally. As such, widening the scope of literature targeted towards better understanding the parent–adolescent conflict relationship is merited. To offer a more gestalt view of parent–adolescent conflict processes, the present study takes a biopsychosocial view of the mother–father–adolescent relationship by considering electrical brain activity using electroencephalography technology. Specifically, electrical brain activity was recorded during two problem-solving family discussions between a mother, father, and adolescent child. Data is analyzed from a pilot study of 11 triads, for a total of 33 participants, examining the statistical relationships between brain waves and self-reported measures of family functioning and distress. Findings suggest that hemispheric lateralization occurs during parent–adolescent problem-solving discussions thus reminding therapists of the importance in using a biopsychosocial lens when assisting families.  相似文献   
50.
Perceptual hysteresis can be defined as the enduring influence of the recent past on current perception. Here, hysteresis was investigated in a basic auditory task: pitch comparisons between successive tones. On each trial, listeners were presented with pairs of tones and asked to report the direction of subjective pitch shift, as either “up” or “down.” All tones were complexes known as Shepard tones (Shepard, 1964), which comprise several frequency components at octave multiples of a base frequency. The results showed that perceptual judgments were determined both by stimulus-related factors (the interval ratio between the base frequencies within a pair) and by recent context (the intervals in the two previous trials). When tones were presented in ordered sequences, for which the frequency interval between tones was varied in a progressive manner, strong hysteresis was found. In particular, ambiguous stimuli that led to equal probabilities of “up” and “down” responses within a randomized context were almost fully determined within an ordered context. Moreover, hysteresis did not act on the direction of the reported pitch shift, but rather on the perceptual representation of each tone. Thus, hysteresis could be observed within sequences in which listeners varied between “up” and “down” responses, enabling us to largely rule out confounds related to response bias. The strength of the perceptual hysteresis observed suggests that the ongoing context may have a substantial influence on fundamental aspects of auditory perception, such as how we perceive the changes in pitch between successive sounds.  相似文献   
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