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331.
This study aimed to characterize affective functioning in families of youth at high familial risk for depression, with particular attention to features of affective functioning that appear to be critical to adaptive functioning but have been underrepresented in prior research including: positive and negative affect across multiple contexts, individual and transactional processes, and affective flexibility. Interactions among early adolescents (ages 9–14) and their mothers were coded for affective behaviors across both positive and negative contexts. Primary analyses compared never-depressed youth at high (n = 44) and low (n = 57) familial risk for depression. The high risk group showed a relatively consistent pattern for low positive affect across negative and positive contexts at both the individual and transactional level. In contrast to prior studies focusing on negative contexts that did not support disruptions in negative affect among high risk youth, the data from this study suggest variability by context (i.e. increased negativity in a positive, but not negative, context), and individual vs. transactional processes (e.g., negative escalation). Findings are discussed in concert with attention to affect flexibility, contextual and transactional factors.  相似文献   
332.
Boatman D 《Cognition》2004,92(1-2):47-65
Functional lesion studies have yielded new information about the cortical organization of speech perception in the human brain. We will review a number of recent findings, focusing on studies of speech perception that use the techniques of electrocortical mapping by cortical stimulation and hemispheric anesthetization by intracarotid amobarbital. Implications for recent developments in neuroimaging studies of speech perception will be discussed. This discussion will provide the framework for a developing model of the cortical circuitry critical for speech perception.  相似文献   
333.
Four motion quartets, each ambiguous with respect to the perception of parallel-path horizontal or vertical motion, were arranged in a diamond configuration. Both global parallel-path motion (the same motion axis for all the quartets), which is typical for multiquartet stimuli, and global rotational rocking are perceived. Experiment 1 indicated that rotational rocking is established at different levels of processing. Globally, larger displacements of each quartet's elements increase the angle of rotation and, thereby, the perception of rotational rocking. Locally, larger displacements have the opposite effect, weakening motion percepts. Experiment 2 showed that global-to-local feedback affects the local perception of rotation-consistent versus rotation-inconsistent motion directions. Experiment 3 provided evidence for hysteresis effects indicative of competition between global rotational rocking and parallel-path motion. The experimental results were simulated by a two-level dynamical model incorporating global-to-local feedback, with recurrent feedforward/feedback loops creating detection instabilities that amplify activation at both global and local levels of the rotational-rocking pattern.  相似文献   
334.
When sample information is combined, it is generally considered normative to weight information based on larger samples more heavily than information based on smaller samples. However, if samples appear likely to have been drawn from different subpopulations, it is reasonable to combine estimates of these subpopulation means (typically, the sample means) without weighting these estimates by sample size. This study investigated whether laypeople are influenced by the likelihood of samples coming from the same population when determining how to combine information. In two experiments we show that (1) implied binomial variability affected participants’ judgments of the likelihood that a sample was drawn from a given population, (2) participants' judgments were more affected by sample size when samples were implied to be drawn randomly from a general population, compared to when they were implied to be drawn from different subpopulations, and (3) people higher in numeracy gave more normative responses. We conclude that when determining how to weight and combine samples, laypeople use not only the provided data, but also information about likelihood and sampling processes that these data imply.  相似文献   
335.
We report a case of a client who discovered she had a BRCA mutation following direct-to-consumer (DTC) genetic testing in the absence of genetic counseling. After testing she presented for genetic counseling with anxiety, distress, and a deficit of knowledge about what the DTC genetic testing revealed. Genetic counseling helped alleviate distress while empowering the client to apply the results of testing to improve medical management. Despite recent studies demonstrating no negative psychological impact of DTC genetic testing on the consumer, this case illustrates that significant psychological distress and confusion can occur as a result of DTC genetic testing for highly penetrant single gene disorders. Pre- and post-test genetic counseling in conjunction with DTC genetic testing may alleviate consumers’ distress and empower clients to proactively utilize their result information.  相似文献   
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338.
Peer tutoring is an evidence-based procedure for improving academic performance for a variety of skill areas. The current study evaluated the feasibility and impact of a peer tutoring package for reading fluency with 4 middle school students receiving Tier II remedial supports. This study used a multiple baseline design across participants to evaluate impact of the peer tutoring procedure on students’ oral reading rate on instructional passages. Results indicated that students’ oral reading rate on instructional probes increased following implementation of the peer tutoring procedure. Moreover, peer tutors implemented most steps of the procedure with a high degree of integrity. Results are discussed in terms of contributions to the peer tutoring and Response to Intervention literatures, as well as application to applied practice.  相似文献   
339.
Research typically defines evangelical belonging as affiliation with an evangelical denomination, but this approach excludes many self-identified evangelicals, even though previous studies of religious groups find that self-identification is a powerful predictor of political preferences. Using data from the National Survey of Religion and Politics, we investigate the usefulness of self-identification for classifying evangelicals. The effects of three types of evangelical belonging (religious tradition-only, self-identification-only, and a combination of religious tradition and self-identification) on respondents' political attitudes, party identification, and vote choice suggest that religious tradition is a good predictor of political attitudes while self-identification is a good predictor of party identification. We conclude that self-identification and tradition are both important to understanding evangelicalism and politics in America.  相似文献   
340.
Much attention has been focused in recent years on the ethical acceptability of physicians receiving gifts from drug companies. Professional guidelines recognize industry gifts as a conflict of interest and establish thresholds prohibiting the exchange of large gifts while expressly allowing for the exchange of small gifts such as pens, note pads, and coffee. Considerable evidence from the social sciences suggests that gifts of negligible value can influence the behavior of the recipient in ways the recipient does not always realize. Policies and guidelines that rely on arbitrary value limits for gift-giving or receipt should be reevaluated.  相似文献   
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