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271.
272.
The present experiment examined learning of a three-segment movement sequence using physical or observational practice, and whether permitting eye movements to be made during observation is a prerequisite for learning such a movement sequence. Specifically, participants were required to move a mouse cursor through a three-segment movement sequence in order to satisfy one of three movement time goals (800, 1000, 1200 ms). A yoked-participant design was used in which a physical practice group acted as a learning model, which was viewed simultaneously by two groups that carried out different observational practice procedures. An observation group was permitted to move their eyes whilst observing the model, whereas the fixation group was instructed to maintain fixation on a central target. The difference between pre-test and post-test data indicated that all the three experimental groups significantly altered their timing accuracy, variability and movement kinematics over practice, while the control group’s behaviour was unchanged. These data indicate that movement time as well as the underlying movement control was learned following observation of a movement with or without an explicit contribution from eye movements, albeit to a lesser extent during the final segment of the sequence when compared to the physical practice group. The implication is that while similar processes might normally be involved in physical and observational practice, information afforded by eye movements during observation (e.g., efference copy and eye proprioception) is not necessary for movement sequence learning. 相似文献
273.
Evrinomy Avdi Keren Amiran Tessa Baradon Carol Broughton Michelle Sleed Rose Spencer Dana Shai 《Infant mental health journal》2020,41(5):589-602
This paper presents findings from an intensive, mixed methods case study of one session of psychoanalytic parent–infant psychotherapy (PPIP) addressing early relational trauma, and aims to shed light on the multimodal interactive processes that take place in the moment-to-moment exchanges comprising the therapeutic encounter. Different research methods were used on video material from PPIP sessions, including microanalysis of adult–infant interactions, discourse analysis of talk, and coding systems developed to study parent–infant interaction. These different perspectives were brought together with the clinical narrative to illuminate the complex, dynamic processes of parent–infant–therapist interaction. More specifically, the detailed analysis of one interactive episode revealed brief behavioral manifestations of fearful and disoriented states of mind, reflecting dysregulated interaction between mother and infant, which also powerfully affected the therapist. The processes through which the therapist gradually resolves this rupture are also described in detail. Through this pilot study, we were able to show that it is possible to systematically study the process of PPIP. The study contributes to the growing psychotherapy research literature that takes into account both the verbal domain and implicit, interactional processes in therapeutic practice, and underscores the therapist's comprehensive engagement in the therapeutic process. 相似文献
274.
Lynn K. Perry Larissa K. Samuelson John P. Spencer 《Journal of experimental child psychology》2009,102(4):445-455
This study investigated how young children’s increasingly flexible use of spatial reference frames enables accurate search for hidden objects by using a task that 3-year-olds have been shown to perform with great accuracy and 2-year-olds have been shown to perform inaccurately. Children watched as an object was rolled down a ramp, behind a panel of doors, and stopped at a barrier visible above the doors. In two experiments, we gave 2- and 2.5-year-olds a strong reference frame by increasing the relative salience and stability of the barrier. In Experiment 1, 2.5-year-olds performed at above-chance levels with the more salient barrier. In Experiment 2, we highlighted the stability of the barrier (or ramp) by maximizing the spatial extent of each reference frame across the first four training trials. Children who were given a stable barrier (and moving ramp) during these initial trials performed at above-chance levels and significantly better than children who were given a stable ramp (and moving barrier). This work highlights that factors central to spatial cognition and motor planning—aligning egocentric and object-centered reference frames—play a role in the ramp task during this transitional phase in development. 相似文献
275.
Sarah V. Spencer Larry W. HawkJr. Jerry B. Richards Keri Shiels William E. PelhamJr. James G. Waxmonsky 《Journal of abnormal child psychology》2009,37(6):805-816
Recent research has suggested that intra-individual variability in reaction time (RT) distributions of children with ADHD is characterized by a particularly large rightward skew that may reflect lapses in attention. The purpose of the study was to provide the first randomized, placebo-controlled test of the effects of the stimulant methylphenidate (MPH) on this tail and other RT distribution characteristics. Participants were 49 9- to 12-year-old children with ADHD. Children participated in a 3-day double-blind, placebo-controlled medication assessment during which they received long-acting MPH (Concerta®), with the nearest equivalents of 0.3 and 0.6 mg/kg t.i.d. immediate-release MPH. Children completed a simple two-choice speeded discrimination task on and off of medication. Mode RT and deviation from the mode were used to examine the peak and skew, respectively, of RT distributions. MPH significantly reduced the peak and skew of RT distributions. Importantly, the two medication effects were uncorrelated suggesting that MPH works to improve both the speed and variability in responding. The improvement in variability with stimulant treatment is interpreted as a reduction in lapses in attention. This, in turn, may reflect stimulant enhancement of self-regulatory processes theorized to be at the core of ADHD. 相似文献
276.
Four studies tested the impact of exposure to thin images on women's eating behavior. In Study 1, women who were exposed to commercials containing thin models ate less in a taste test than women exposed to neutral commercials. The next two studies revealed that the impact of the thin images could be reduced by challenging the sociocultural norms for appearance. In Study 2, including images of relatively heavier women who have been successful in life (an indirect challenge to the norm) attenuated the impact of the thin images on women's eating behavior. Study 3 demonstrated that convincing women that their peers do not endorse the sociocultural norms also reduced the impact of the thin images. In Study 4, we found that exposure to thin images led to activation of an association between heaviness and rejection and that the more this association was activated, the less participants ate. 相似文献
277.
Erin J Strahan Steven J Spencer Mark P Zanna 《Journal of experimental social psychology》2002,38(6):556-568
Three studies demonstrated that subliminally priming a goal-relevant cognition (thirst in Studies 1 and 2; sadness in Study 3) influenced behavior (in Study 1) and enhanced the persuasiveness of an ad targeting the goal (in Studies 2 and 3) when people were motivated to pursue the goal (when they were thirsty in Studies 1 and 2; when they expected to interact with another person in Study 3). These results suggest that subliminal priming can be used to enhance persuasion, but only when certain conditions are met. Both the priming of goal-relevant cognitions and the motive to pursue the goal were necessary for ads targeting the goal to be more persuasive. The implications of these results for the role of functionality in subliminal priming and for the use and abuse of subliminal priming in persuasion are discussed. 相似文献
278.
Jane J. Chung‐Do Ilima Ho‐Lastimosa Samantha Keaulana Kenneth Ho Phoebe W. Hwang Theodore Radovich Luana Albinio Ikaika Rogerson LeShay Keliiholokai Kirk Deitschman Michael S. Spencer 《American journal of community psychology》2019,64(1-2):107-117
Although Hawai‘i is often portrayed as an idyllic paradise and is recognized as one of the healthiest States in the United States, pervasive health disparities exist among Native Hawaiians. Similar to other indigenous populations across the globe, these disparities are linked to unjust social and economic policies rooted in colonization and historical trauma. Western‐centric efforts to address these disparities have yielded limited results. Consequently, indigenous frameworks to decolonize western‐centric research processes have emerged. The Waimānalo Pono Research Hui is an example of a community–academic partnership that uses indigenous methodologies and principles of community‐based participatory research as the foundation to engage Native Hawaiian community members in research. Monthly gatherings are held where community members and academic researchers share a meal and discuss community priorities with the goal of shaping research and programming that are rooted in Native Hawaiian values. A mission for the group has been created as well as protocols for community engagement to ensure all projects that work with the Waimānalo Pono Research Hui are ethically sound and grounded in the community's preferences, cultural knowledge, and lived experiences. Our community members continually report that the Waimānalo Pono Research Hui has positively transformed their perception of and willingness to engage in research. Similarly, university students and academic researchers express how much their knowledge about working with communities has grown and inspired them. Creating spaces for communities and researchers to build authentic relationships and engage in ongoing conversations can promote culturally grounded and community‐driven research and programming. 相似文献
279.
Sobanawartiny Wijeakumar Aarti Kumar Lourdes M. Delgado Reyes Madhuri Tiwari John P. Spencer 《Developmental science》2019,22(5)
There is a growing need to understand the global impact of poverty on early brain and behavioural development, particularly with regard to key cognitive processes that emerge in early development. Although the impact of adversity on brain development can trap children in an intergenerational cycle of poverty, the massive potential for brain plasticity is also a source of hope: reliable, accessible, culturally agnostic methods to assess early brain development in low resource settings might be used to measure the impact of early adversity, identify infants for timely intervention and guide the development and monitor the effectiveness of early interventions. Visual working memory (VWM) is an early marker of cognitive capacity that has been assessed reliably in early infancy and is predictive of later academic achievement in Western countries. Here, we localized the functional brain networks that underlie VWM in early development in rural India using a portable neuroimaging system, and we assessed the impact of adversity on these brain networks. We recorded functional brain activity as young children aged 4–48 months performed a VWM task. Brain imaging results revealed localized activation in the frontal cortex, replicating findings from a Midwestern US sample. Critically, children from families with low maternal education and income showed weaker brain activity and poorer distractor suppression in canonical working memory areas in the left frontal cortex. Implications of this work are far‐reaching: it is now cost‐effective to localize functional brain networks in early development in low‐resource settings, paving the way for novel intervention and assessment methods. 相似文献
280.
African American parenting strategies are important in the development of prosocial behavior and are linked to empathy, self-efficacy, and racial identity. This study examined how adolescent-perceived parenting strategies (i.e., warmth, “hostility,” cultural socialization) combined to form parenting styles and how these related to positive outcomes. Participants were 358 low-income, urban southern African American high school students. Cluster analyses revealed four distinct parenting styles. Findings provide evidence that Eurocentric norms are inadequate for understanding socialization in African American families. Results indicate that a rethinking of what constitutes “parental hostility” is required. Implications, future research directions, and clinical application are discussed. 相似文献