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921.
    
A melody’s identity is determined by relations between consecutive tones in terms of pitch and duration, whereas surface features (i.e., pitch level or key, tempo, and timbre) are irrelevant. Although surface features of highly familiar recordings are encoded into memory, little is known about listeners’ mental representations of melodies heard once or twice. It is also unknown whether musical pitch is represented additively or interactively with temporal information. In two experiments, listeners heard unfamiliar melodies twice in an initial exposure phase. In a subsequent test phase, they heard the same (old) melodies interspersed with new melodies. Some of the old melodies were shifted in key, tempo, or key and tempo. Listeners’ task was to rate how well they recognized each melody from the exposure phase while ignoring changes in key and tempo. Recognition ratings were higher for old melodies that stayed the same compared to those that were shifted in key or tempo, and detrimental effects of key and tempo changes were additive in between-subjects (Experiment 1) and within-subjects (Experiment 2) designs. The results confirm that surface features are remembered for melodies heard only twice. They also imply that key and tempo are processed and stored independently.  相似文献   
922.
    
Consequences of rearing history in chimpanzees (Pan troglodytes) have been explored in relation to behavioral abnormalities and cognition; however, little is known about the effects of rearing conditions on anatomical brain development. Human studies have revealed that experiences of maltreatment and neglect during infancy and childhood can have detrimental effects on brain development and cognition. In this study, we evaluated the effects of early rearing experience on brain morphology in 92 captive chimpanzees (ages 11–43) who were either reared by their mothers (= 46) or in a nursery (= 46) with age‐group peers. Magnetic resonance brain images were analyzed with a processing program (BrainVISA) that extracts cortical sulci. We obtained various measurements from 11 sulci located throughout the brain, as well as whole brain gyrification and white and grey matter volumes. We found that mother‐reared chimpanzees have greater global white‐to‐grey matter volume, more cortical folding and thinner grey matter within the cortical folds than nursery‐reared animals. The findings reported here are the first to demonstrate that differences in early rearing conditions have significant consequences on brain morphology in chimpanzees and suggests potential differences in the development of white matter expansion and myelination.  相似文献   
923.
    
Verbal and emotional forms of expression can be difficult for young children who have experienced trauma. Creative methods and approaches such as puppets, sandtray, letter writing, and art are therapeutic mediums that provide an outlet for a young client’s story of trauma to be told. Children can use puppets to depersonalize and share feelings with a counselor that would provide insight into their coping strategies. Similarly, sandtray is another nonverbal approach that gives children the opportunity to externalize their feelings safely and can be easily used with extroverted and introverted clients. Letter writing and art can empower children and give them hope for the future. In summary, creative techniques can allow counselors to help explore stories of trauma with young clients.  相似文献   
924.
    
Ethnic identity development may increase resilience to discrimination and prejudice, which are often common and stressful for ethnic minority adolescents. Based on ethnic identity development theory and resilience theory, we hypothesize that under high discrimination stress, ethnic affirmation and ethnic identity stage will have protective moderating effects on self‐esteem and depressive symptoms. A cross‐sectional self‐report study with 125 ethnic minority adolescents (13–18 years) found that ethnic affirmation (p < .05) had protective effects on depressive symptoms (p < .05) and protective‐enhancing effects on self‐esteem at high levels of discrimination stress. Achieved ethnic identity stage (p < .05) had protective‐stabilizing effects on self‐esteem at high discrimination stress. Our findings demonstrate that the protective elements of ethnic identity are feeling positive about one's ethnic group, having learned about one's history, and having resolved conflicts about one's ethnic group.  相似文献   
925.
    
Age and race differences in race stereotype awareness and endorsement were examined in 382 Black and White fourth, sixth, and eighth graders. Youths reported their own beliefs and their perceptions of adults' beliefs about racial differences in ability in two domains: academics and sports. Children's own endorsement of race stereotypes was highly correlated with their perceptions of adults' race stereotypes. Blacks reported stronger traditional sports stereotypes than Whites, and 4th‐ and 6th‐grade Blacks reported roughly egalitarian academic stereotypes. At every grade level, Whites reported academic stereotypes that favored Whites, and 6th‐ and 8th‐grade Whites reported sports stereotypes that favored Blacks. Results support the tenets of status theory and have implications for identity development and achievement motivation in adolescents.  相似文献   
926.
927.
    
The episodic buffer component of working memory was examined in children with attention deficit/hyperactivity disorder (ADHD) and typically developing peers (TD). Thirty-two children (ADHD = 16, TD = 16) completed three versions of a phonological working memory task that varied with regard to stimulus presentation modality (auditory, visual, or dual auditory and visual), as well as a visuospatial task. Children with ADHD experienced the largest magnitude working memory deficits when phonological stimuli were presented via a unimodal, auditory format. Their performance improved during visual and dual modality conditions but remained significantly below the performance of children in the TD group. In contrast, the TD group did not exhibit performance differences between the auditory- and visual-phonological conditions but recalled significantly more stimuli during the dual-phonological condition. Furthermore, relative to TD children, children with ADHD recalled disproportionately fewer phonological stimuli as set sizes increased, regardless of presentation modality. Finally, an examination of working memory components indicated that the largest magnitude between-group difference was associated with the central executive. Collectively, these findings suggest that ADHD-related working memory deficits reflect a combination of impaired central executive and phonological storage/rehearsal processes, as well as an impaired ability to benefit from bound multimodal information processed by the episodic buffer.  相似文献   
928.
Individuals have various kinds of obligations: keep promises, don’t cause harm, return benefits received from injustices, be partial to loved ones, help the needy and so on. How does this work for group agents? There are two questions here. The first is whether groups can bear the same kinds of obligations as individuals. The second is whether groups’ pro tanto obligations plug into what they all-things-considered ought to do to the same degree that individuals’ pro tanto obligations plug into what they all-things-considered ought to do. We argue for parity on both counts.  相似文献   
929.
Adults reason by exclusivity to identify the meanings of novel words. However, it is debated whether, like children, they extend this strategy to disambiguate other referential expressions (e.g., facts about objects). To further inform this debate, this study tested 41 adults on four conditions of a disambiguation task: label/label, fact/fact, label/fact, and fact/label (Scofield & Behrend, 2007 ). Participants also provided a verbal explanation for their referent selections to tease apart the underlying processes. Results indicated that adults successfully discerned the target object in the label/label and label/fact condition, yet not the remaining two conditions. Verbal reports indicated that the strategy utilized to disambiguate differed depending upon communicative context. These findings confirm that the tendency to reason by exclusivity becomes restricted to word‐learning situations with growing linguistic and communicative experience.  相似文献   
930.
    
Validity comparisons (including hit rates, kappa coefficients, and chance expectancy rates) were made between person matching at the scale and discriminant analysis levels with 5,143 medical students who had taken an interest inventory and had entered their medical residencies. Person matching using the 30 discriminant analysis items demonstrated the greatest ability to assign test takers to the highest number of occupations at a rate greater than chance.  相似文献   
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