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41.
In the current research, we sought to examine the role of spatial frequency on the detection of threat using a speeded visual search paradigm. Participants searched for threat-relevant (snakes or spiders) or non-threat-relevant (frogs or cockroaches) targets in an array of neutral (flowers or mushrooms) distracters, and we measured search performance with images filtered to contain different levels (high and low) of spatial frequency information. The results replicate previous work demonstrating more rapid detection of threatening versus non-threatening stimuli [e.g. LoBue, V. & DeLoache, J. S. (2008). Detecting the snake in the grass: Attention to fear-relevant stimuli by adults and young children. Psychological Science, 19, 284–289. doi:10.1111/j.1467-9280.2008.02081.x]. Most importantly, the results suggest that low spatial frequency or relatively coarse levels of visual information is sufficient for the rapid and accurate detection of threatening stimuli. Furthermore, the results also suggest that visual similarity between the stimuli used in the search tasks plays a significant role in speeded detection. The results are discussed in terms of the theoretical implications for the rapid detection of threat and methodological implications for properly accounting for similarity between the stimuli in visual search studies. 相似文献
42.
Gender differences in play behavior are well documented. However, little work has examined the issue of variability of gender-typed behaviors within individuals or within genders. We investigated whether children's gender-typed toy play behavior is (a) variable across time within individuals, and (b) variable in response to exposure to counterstereotypic models. Extensive observations (N=203) were made of 8 highly gender-typed preschool children over 4 months. Variability was assessed by examining changes in the percentage of masculine and feminine toy play across successive days in which (a) gender neutral stories were read (within-individual variability) and (b) gender counterstereotypic stories were introduced (environmental variability). Variability of gender-typed play within individuals and in response to environmental stimuli was found among girls, but not among boys. 相似文献
43.
Loaiza VM McCabe DP Youngblood JL Rose NS Myerson J 《Journal of experimental psychology. Learning, memory, and cognition》2011,37(5):1258-1263
Recent research in working memory has highlighted the similarities involved in retrieval from complex span tasks and episodic memory tasks, suggesting that these tasks are influenced by similar memory processes. In the present article, the authors manipulated the level of processing engaged when studying to-be-remembered words during a reading span task (Experiment 1) and an operation span task (Experiment 2) in order to assess the role of retrieval from secondary memory during complex span tasks. Immediate recall from both span tasks was greater for items studied under deep processing instructions compared with items studied under shallow processing instructions regardless of trial length. Recall was better for deep than for shallow levels of processing on delayed recall tests as well. These data are consistent with the primary-secondary memory framework, which suggests that to-be-remembered items are displaced from primary memory (i.e., the focus of attention) during the processing phases of complex span tasks and therefore must be retrieved from secondary memory. 相似文献
44.
Stronger neural dynamics capture changes in infants' visual working memory capacity over development
Visual working memory (VWM) capacity has been studied extensively in adults, and methodological advances have enabled researchers to probe capacity limits in infancy using a preferential looking paradigm. Evidence suggests that capacity increases rapidly between 6 and 10 months of age. To understand how the VWM system develops, we must understand the relationship between the looking behavior used to study VWM and underlying cognitive processes. We present a dynamic neural field model that captures both real-time and developmental processes underlying performance. Three simulation experiments show how looking is linked to VWM processes during infancy and how developmental changes in performance could arise through increasing neural connectivity. These results provide insight into the sources of capacity limits and VWM development more generally. 相似文献
45.
Green VA Cillessen AH Rechis R Patterson MM Hughes JM 《The Journal of genetic psychology》2008,169(1):92-112
In the present study, the authors investigated what prosocial-assertive, passive, and coercive strategies 6-year-olds (N=257) would propose in response to stories about 2 socially challenging situations: displacing another child in a game and obtaining a toy from another child. The scenarios also varied the gender composition of the characters. Participants' verbalizations while acting out their responses using toy props fell into 13 categories of strategies. Teachers reported antisocial behavior and social competence of the participants. Girls and boys responded similarly in their general suggestions of prosocial or assertive strategies, but girls were more likely to offer prosocial strategies with other girls than with boys. Teacher-rated competence and antisocial behavior interacted in predicting coercive responses by girls but not by boys. The results demonstrate that prosocial and antisocial behaviors need to be considered in interaction to fully understand the nature of social competence. 相似文献
46.
Detecting the snake in the grass: attention to fear-relevant stimuli by adults and young children 总被引:1,自引:0,他引:1
Snakes are among the most common targets of fears and phobias. In visual detection tasks, adults detect their presence more rapidly than the presence of other kinds of visual stimuli. We report evidence that very young children share this attentional bias. In three experiments, preschool children and adults were asked to find a single target picture among an array of eight distractors. Both the children and the adults detected snakes more rapidly than three types of nonthreatening stimuli (flowers, frogs, and caterpillars). These results provide the first evidence of enhanced visual detection of evolutionarily relevant threat stimuli in young children. 相似文献
47.
Teresa L. Kramer Dean Blevins Terri L. Miller Martha M. Phillips Vanessa Davis Billy Burris 《Journal of religion and health》2007,46(1):123-139
While depression is a significant worldwide health problem, fewer than half of individuals seek care. Faith-based communities
may play an important role in improving the knowledge of and linkage to depression care. Focus groups of Caucasian and African-American
clergy were conducted to explore these issues. Using a grounded theory approach five themes emerged, including explanatory
models of depression, barriers and facilitators to care, and recommendations for involving religious communities. A model
of depression care pathways was constructed that integrates secular and spiritual approaches. The findings highlight the need
for targeted interventions to build trust between clergy and mental health professionals.
Teresa L. Kramer, Ph.D., is Chief Psychologist and Associate Professor of Psychiatry in the College of Medicine, University
of Arkansas for Medical Sciences in Little Rock. She has conducted research in child, adolescent and adult mental health assessment,
outcomes, and quality of care. Her current research on adolescent depression is funded through a Research Career Development
Award from the National Institute of Mental Health. She is currently developing faith-based programs to educate ministers
and their congregations about depression-related illness.
Dean Blevins, Ph.D., teaches in the Department of Psychiatry, College of Medicine, at the university and is associated with
the Center for Mental Health & Outcomes Research, Central Arkansas Veterans Healthcare System, and the South Central Mental
Illness, Research, and Clinical Center in Little Rock. Terri L. Miller, Ph.D., also teaches in the Department of Psychiatry.
Martha Phillips, Ph.D., is at the Department of Human Services in Little Rock.
Vanessa Davis and Billy Burris are employed at the Division of Behavioral Health Services, also in Little Rock. 相似文献
48.
Vanessa Lynn Hunn Carlton David Craig 《Journal of multicultural counseling and development》2009,37(2):83-93
The authors discuss depression in African American women from a sociocultural perspective, including aspects of oppression and racism that affect symptom manifestation. The authors highlight John Henryism as a coping mechanism, the history and continuing role of the African American church as a safe haven, and strategies for culturally competent practice. Los autores discuten la depresión en mujeres Afroamericanas desde una perspectiva sociocultural, incluyendo los aspectos de opresión y racismo que afectan a la manifestación de los síntomas. Los autores destacan el John Henry‐ismo como mecanismo de afrontamiento, la historia y el papel constante de la iglesia Afroamericana como refugio seguro, y las estrategias para una práctica culturalmente competente. 相似文献
49.
Vanessa LoBue 《Developmental science》2009,12(2):305-313
Threatening facial expressions can signal the approach of someone or something potentially dangerous. Past research has established that adults have an attentional bias for angry faces, visually detecting their presence more quickly than happy or neutral faces. Two new findings are reported here. First, evidence is presented that young children share this attentional bias. In five experiments, young children and adults were asked to find a picture of a target face among an array of eight distracter faces. Both age groups detected threat‐relevant faces – angry and frightened – more rapidly than non‐threat‐relevant faces (happy and sad). Second, evidence is presented that both adults and children have an attentional bias for negative stimuli overall. All negative faces were detected more quickly than positive ones in both age groups. As the first evidence that young children exhibit the same superior detection of threatening facial expressions as adults, this research provides important support for the existence of an evolved attentional bias for threatening stimuli. 相似文献
50.
Computer-simulated microworlds can provide a controlled method for investigating concepts related to naturalistic decision making (NDM). However, the extent to which these tools can be used to generate meaningful outcomes is unknown. The current study used a microworld called Networked Fire Chief (NFC) to explore the range of skills and knowledge acquired as participants gained practice on the program. The complexity of the NFC NDM environment was also explored. Twenty participants each completed 20 equivalent 5-min scenarios on NFC. Interview data, behavioral data and performance scores were collected across the trials. Results confirmed that NFC provides an environment that promotes appropriate perceptual-cognitive processing for NDM. However, performance improved to only a small extent across the 20 trials in four performance areas: speed, accuracy, efficiency and planning. In addition, the number of personal and situational factors to be considered when decision making on NFC was not comparable with real-world NDM environments. Overall, results indicated that the use of microworlds for research should be regulated by an understanding of the limitations of their applicability. 相似文献