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101.
Robertson SD 《Journal of motor behavior》2001,33(2):114-126
In 2 experiments, dynamic systems theory predictions concerning intrinsic dynamics and variability of bimanual coordination were examined at different developmental stages. In Experiment 1, ten 4-, 6-, 7-, 8-, and 10-year-old children and adults performed unimanual dominant, unimanual nondominant, and bimanual continuous circle drawing. All tasks were performed at the participants' preferred rate, size, and mode of coordination. The 4-, 6-, and 7-year-old children produced larger circles with longer durations than those of the 8- and 10-year-olds and the adults. That finding demonstrates that younger children display different intrinsic dynamics than older children and adults. The 4-, 6-, and 7-year-old children also displayed more variability in bimanual coordination (more time in less stable patterns of coordination, higher standard deviation in relative phase) and produced more transitions between coordination patterns than the 8- and 10-year-olds and the adults. In Experiment 2, the same participants performed bimanual circles at increasing rates. Consistent with predictions of the HKB model (H. Haken, J. A. S. Kelso, & H. Bunz, 1985), the number of transitions decreased as speed increased. Some support was found for the notion that age-related variables of attention and rate contribute to the increased variability in young children's bimanual coordination. 相似文献
102.
Anatomical, physiological, and behavioral studies provide support for separate object- and location-based components of visual attention. Although studies of object-based components have usually involved voluntary attention, more recent evidence has suggested that objects may play an independent role in reflexive exogenous orienting, at least at long stimulus onset asynchronies (SOAs). In the present experiments, the role of objects in reflexive attentional orienting was investigated by developing a task in which location and object cuing could be separately examined for both short and long SOAs. Typical location cuing effects were obtained, indicating facilitation at short cue-target intervals and inhibition of return (IOR) at longer intervals. In contrast, object cuing resulted in facilitation for cued objects at long cue-target intervals and no object-based IOR. Interestingly, object cuing primarily affected targets at cued locations, and not those at uncued locations. Together, the experiments examine the interactive nature of objects and locations in exogenous orienting and seem most consistent with a location-mediated view of object-based orienting. 相似文献
103.
The present study explores how online communities affect real-world personal relations based on a cross-cultural survey conducted in Japan and Korea. Findings indicate that the gratifications of online communities moderate the effects of online communities on social participation. Online communities are categorized into a real-group-based community and a virtual-network-based community. The membership of real-group-based online community is positively correlated with social bonding gratification and negatively correlated with information- seeking gratification. Japanese users prefer more virtual-network-based online communities, while their Korean counterparts prefer real-group-based online communities. Korean users are more active in online communities and seek a higher level of socializing gratifications, such as social bonding and making new friends, when compared with their Japanese counterparts. These results indicate that in Korea, personal relations via the online community are closely associated with the real-world personal relations, but this is not the case in Japan. This study suggests that the effects of the Internet are culture-specific and that the online community can serve a different function in different cultural environments. 相似文献
104.
Russ Curtis Phyllis Robertson Amy Forst Caroline Bradford 《Counselling and Psychotherapy Research》2007,7(4):203-210
Purpose: Postpartum mood disorders (PMDs), the distressing mental and emotional symptoms experienced by women after childbirth, are just now receiving the attention they warrant. Given the serious and sometimes life‐threatening nature of PMDs, we used a qualitative research design to examine more closely the nature of symptoms experienced and the effective strategies women used to cope with PMD. Participants: The respondents were 252 members of PMD and breast‐feeding (La Leche League) support groups throughout the United States. Method: Participants responded anonymously to open‐ended questions in an online survey. The data were reviewed by the research team to determine common themes and prevailing issues. Results: Participants reported myriad different symptoms and used a host of various strategies to alleviate problematic thoughts, feelings, and behaviours following childbirth. Postpartum symptoms affected participants’ plans to have future children. For some women, symptoms became more intense during subsequent births. Despite the problematic nature of PMD, more than half of the participants reported receiving little or no information from healthcare providers about PMDs. Implications for counsellors and other healthcare providers are discussed in detail. 相似文献
105.
Lloyd Hawkeye Robertson 《Journal of religion and health》2007,46(3):449-461
Many lay writers have claimed that psychologists and other scientists need to integrate something called “spirituality” into
their work. This spirituality, usually undefined, is not something the truth of which may be determined by scientific means,
yet it should be called upon to guide or govern our actions in certain all-important ways. This paper deconstructs two such
calls that, in the end, are based on the notion of revealed, or religiously held, truth. A paradigm by which spirituality
can be investigated integrating the individual self with culture is proposed, and use of this paradigm when considering modernization
and supply-side theses of religious propagation is suggested.
相似文献
Lloyd Hawkeye RobertsonEmail: |
106.
Glyn V. Thomas Derek Robertson David A. Lieberman 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1990,42(3):267-287
Pigeons were trained on trace conditioning procedures (autoshaping) in which a keylight conditioned stimulus (CS) was presented for 5 sec and followed after a 10-sec temporal gap by food. In Experiment 1, acquisition of conditioned responding to the CS was facilitated when it was immediately followed by a brief stimulus, but only when the brief stimulus was of greater intensity than the trace CS. In Experiment 2, this facilitation effect was found when a more intense brief stimulus followed the trace CS immediately, but not when it was delayed. In both experiments, responding to the target CS was compared within-subjects to that to a control CS, which eliminated factors such as second-order conditioning as an explanation for the facilitation effects. Together, the results of Experiments 1 and 2 suggest that a brief stimulus may mark immediately preceding events in memory and thus facilitate their association with delayed reinforcement only if the brief stimulus is relatively more intense, and thus more salient, than the target events. In Experiment 3, we found substantial generalization of this facilitation effect from the marked CS to the control CS and conclude that the results of Experiments 1 and 2 may underestimate the magnitude of these marking effects. 相似文献
107.
108.
Many factors influence the quality of a romantic relationship, and there has been increasing evidence that early attachment plays a vital role in adult bonds, including romantic relationships. However, most of the literature has focused on the role of parent–child and peer attachments with little focus on sibling attachments. Using the Sibling Relationship Questionnaire, we asked a sample of New Zealand university students to retrospectively rate the relationship they had with a significant sibling during their adolescence, and to rate their current romantic relationship quality using the Relationship Assessment Scale. We found no significant correlations between the subscales of the Sibling Relationship Questionnaire and the Relationship Assessment Scale. However, further analysis uncovered a significant association between the Relationship Assessment Scale, birth order, and relationship length. 相似文献
109.
110.