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411.
The influence of exploration mode, orientation, and configuration on the haptic Müller-Lyer illusion
Heller MA McCarthy M Schultz J Greene J Shanley M Clark A Skoczylas S Prociuk J 《Perception》2005,34(12):1475-1500
We studied the impact of manner of exploration, orientation, spatial position, and configuration on the haptic Müller-Lyer illusion. Blindfolded sighted subjects felt raised-line Müller-Lyer and control stimuli. The stimuli were felt by tracing with the index finger, free exploration, grasping with the index finger and thumb, or by measuring with the use of any two or more fingers. For haptic judgments of extent a sliding tangible ruler was used. The illusion was present in all exploration conditions, with overestimation of the wings-out compared to wings-in stimuli. Tracing with the index finger reduced the magnitude of the illusion. However, tracing and grasping induced an overall underestimation of size. The illusion was greatly attenuated when stimuli were felt with the index fingers of both hands. Illusory misperception was not altered by the position in space of the Müller-Lyer stimuli. No effects of changes in the thickness of the line shaft were found, but there were effects of the length of the wing endings for the smaller, 5.1 cm stimuli. The theoretical and practical implications of the results are discussed. 相似文献
412.
Extinction of classically conditioned fear, like its acquisition, is active learning, but little is known about its molecular mechanisms. We recently reported that temporal massing of conditional stimulus (CS) presentations improves extinction memory acquisition, and suggested that temporal spacing was less effective because individual CS exposures trigger two opposing processes: (1) fear extinction, which is favored by CS massing, and (2) fear incubation (increase), which is favored by spacing. We here report the effects of manipulating the adrenergic system during massed or spaced CS presentations in fear-conditioned mice. We administered yohimbine (5 mg/kg), an alpha(2)-receptor antagonist, or propranolol (10 mg/kg), a beta-receptor antagonist, systemically prior to CS presentation sessions and recorded both short- and long-term changes in conditional freezing. Yohimbine treatment facilitated extinction of both cue and context fear with massed protocols. When given before spaced CS presentations, propranolol led to a persistent incubation of cue fear, whereas yohimbine led to persistent extinction, compared with vehicle-treated animals, which showed no change in fear. These results suggest that norepinephrine positively modulates the formation of fear extinction memories in mice. They also provide clear evidence that spaced CS presentations trigger both fear-reducing (extinction) and fear-increasing (incubation) mechanisms. 相似文献
413.
That different amplitudes of muscle activities during various abdominal exercises not only reflect the inherent differences in motor control but movement speed as well was hypothesized. 20 healthy adults (M age = 23 yr.) performed three exercises that involved varying amounts of trunk control: the partial sit-up, full sit-up, and AbSlide roll. Covariate analyses indicated that the amplitude of muscle activities could be partitioned into three categories: motor control and scaling (speed and amplitude), scaling only, and motor control only. Overall, the AbSlide exercise activated the most amount of muscular activity, followed by the full and partial sit-up exercises. Results are discussed in terms of how the various muscles contribute to motor control and velocity scaling. 相似文献
414.
Maternal perceptions of infant soothability moderated the relation between negative infant temperament and maternal sensitivity. Infant negative temperament and maternal sensitivity were significantly positively related when maternal perception of infant soothability was high and significantly negatively related when maternal perception of infant soothability was low. 相似文献
415.
Deficits in trace cued fear conditioning in galanin-treated rats and galanin-overexpressing transgenic mice 总被引:1,自引:0,他引:1
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Kinney JW Starosta G Holmes A Wrenn CC Yang RJ Harris AP Long KC Crawley JN 《Learning & memory (Cold Spring Harbor, N.Y.)》2002,9(4):178-190
Galanin inhibits the release of several neurotransmitters and produces performance deficits in a variety of spatial and aversive learning and memory tasks. The experiments in this study investigated the role galanin has in emotional learning and memory using a standard delay cued and contextual fear conditioning task. Rats were administered galanin into the lateral ventricles before training, and scored for freezing behavior in the same context and in a novel context with and without an auditory cue (CS) that had been paired previously with an aversive stimulus (US). Galanin-overexpressing transgenic mice were tested in an identical behavioral protocol. The galanin-administered rats and the transgenic mice were not significantly different from their respective controls on this task. A more challenging trace cued and contextual fear conditioning procedure was administered to separate groups of galanin-treated rats and galanin-overexpressing transgenic mice. Subjects were trained with the same CS and US, however, a 2.5-sec delay was inserted between CS offset and US onset. Following the trace conditioning, rats administered galanin and mice overexpressing galanin both exhibited significantly less freezing to the CS in the novel context as compared with their control groups. These results indicate that the observed disruption of cued fear conditioning was specific to the more difficult trace conditioning task. These findings are the first demonstration that galanin impairs performance on an emotional memory task and support the hypothesis that galanin-induced deficits are specific to more difficult cognitive tasks. 相似文献
416.
Brian D. Greer Timothy A. Shahan Wayne W. Fisher Daniel R. Mitteer Ashley M. Fuhrman 《Journal of applied behavior analysis》2023,56(1):166-180
Translation of promising procedures for mitigating treatment relapse has received considerable attention recently from researchers across the basic–applied continuum. One procedure that has demonstrated mixed support involves increasing the duration of treatment as a strategy for blunting resurgence. In a recent translational study, Greer et al. (2020) failed to detect a mitigation effect of increased treatment duration on the resurgence of destructive behavior. However, design limitations may have been responsible. The present study corrected these limitations by (a) employing a sequential design to decrease the possibility of multiple-treatment interference, (b) evaluating more treatment durations, (c) arranging treatments of fixed durations, and (d) conducting treatments of more extreme duration in a different clinical sample. Despite these improvements in experimental rigor and the testing of more extreme boundary conditions, the present study also failed to detect a mitigation effect of increased treatment duration. Likely explanations are discussed. 相似文献
417.
Tangela Roberts James E. Brooks TeKisha Rice Ashley K. Randall 《Personal Relationships》2023,30(3):704-708
The field of relationship science began with understanding the role of attraction and has expanded to examine factors associated with relationship initiation, development, and maintenance. Despite the growth of the field, recent reviews of topics present in relationship science have revealed a dearth of literature examining sociocultural contexts that may impact relational processing, especially for traditionally underrepresented groups in science. Notably, given the theories, frameworks, and methods applied in these disciplines, counseling psychology and relationship science are at the forefront of examining such contexts. To this end, the goal of the special issue was to bring together scholars whose work is either an application of or showcases how the contemporary foci of counseling psychology, including but not limited to intersectionality, social justice, cultural competence/humility, identity, strengths-based approaches, and social power hierarchies are applicable to the study of relationships broadly defined. This editorial synthesis provides a brief summary of the four articles that are included in this special issue and ends with recommendations for future research that intersects counseling psychology and relationship science. 相似文献
418.
Robert W. Lent Ijeoma EzeoforM. Ashley Morrison Lee T. PennGlenn W. Ireland 《Journal of Vocational Behavior》2016
We present two studies applying the social cognitive model of career self-management (Lent & Brown, 2013) to career exploration and decision-making outcomes in college students. In the first study (N = 180 college students), we developed a new, brief measure of career exploration and decision-making self-efficacy for use in subsequent model testing. The measure yielded two factors, decisional self-efficacy and coping efficacy, with adequate internal consistency reliability estimates. The decisional self-efficacy factor related strongly to an established measure of career decision self-efficacy and produced theory consistent relations with measures of outcome expectations, social support, conscientiousness, exploration goals, prior engagement in career exploration, decisional anxiety, and level of career decidedness. In the second study (N = 215 college students), we re-examined the factor structure of the new self-efficacy measure and used it to assess the tenability of the self-management model in a path analysis predicting exploration goals, decisional anxiety, and career decidedness. The model fit the data well overall, though certain predictors were linked to the criterion variables only indirectly via mediated pathways. Implications of the findings for the social cognitive model as well as for future research and practice are considered. 相似文献
419.
Hoarding Disorder is characterized by difficulties with discarding and frequently excessively acquiring possessions, resulting in substantial clutter. Previous research has implicated trauma in the development of hoarding, but no study to date has examined the relationship between trauma and hoarding using hypothetical hoarding paradigms. This study investigated the association between traumatic events and both self-report and hypothetical indices of hoarding symptoms. We predicted that frequency of trauma would be associated with greater hoarding symptoms (across self-report and hypothetical indices). Undergraduate students (N = 80) completed self-report measures of hoarding symptoms and trauma, and hypothetical measures of acquiring and saving tendencies. As expected, more frequent trauma, and physical/sexual trauma in particular, was associated with greater acquiring tendencies. However, frequency of trauma was not significantly correlated with saving tendencies or self-reported hoarding symptoms. Future research should replicate these findings using longitudinal designs to confirm whether trauma actually serves as a risk factor for hoarding. Replication in a clinical sample is needed to better understand the implications of these results for intervention. 相似文献
420.
Jasmine D. Williams Ashley N. Woodson Tanner LeBaron Wallace 《Research in human development》2016,13(1):15-31
Classroom interactions that engender psychologically safe climates have rich developmental potential; these interactions often facilitate engagement in academic risk-taking and exploration (Cooper, 2013). On the contrary, classroom interactions that are threatening to adolescents’ identities send messages of devaluation and can negatively impact feelings of belonging and academic achievement, particularly for youth of color (Sherman et al., 2013). In efforts to help explicate the interrelations between racial-identity linked risks and threats and psychological safety in classroom learning contexts, this exploratory case study examined two 9th grade English Language Arts teachers’ negotiation of attunement, authenticity, and power sharing during race talk. Our in-depth analysis of these classrooms suggested the following teacher moves may be particularly important for psychological safety during race talk: teacher moves that (a) support or inhibit power sharing, (b) indicate high or low levels of teacher attunement, and (c) demonstrate or mask the teacher’s authenticity. These results have implications for understanding the co-construction of psychological safety in classrooms during identity-salient and racialized interactions. 相似文献