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191.
Drew M. Velting Jill H. Rathus Gregory M. Asnis 《Suicide & life-threatening behavior》1998,28(2):187-196
We present a typology of adolescents' most common explanations for discrepant reporting of suicidal behavior. Forty-eight adolescents provided attempt histories by completing a self-report measure of suicidality. A select number of items were subsequently readministered (average interval = 5 days) using a semistructured interview format. Discrepancies in reporting were found among 50% of the sample. Adolescents were also asked to clarify, using an open-ended format, what might have accounted for a particular discrepancy. Based on these responses, seven mutually exclusive and exhaustive categories were derived. High rates of interrater agreement indicated that these categories were reliable. 相似文献
192.
Drew McDermott 《Cognitive Science》1982,6(2):101-155
Much previous work in artificial intelligence has neglected representing time in all its complexity. In particular, it has neglected continuous change and the indeterminacy of the future. To rectify this, I have developed a first-order temporal logic, in which it is possible to name and prove things about facts, events, plans, and world histories. In particular, the logic provides analyses of causality, continuous change in quantities, the persistence of facts (the frame problem), and the relationship between tasks and actions. It may be possible to implement a temporal-inference machine based on this logic, which keeps track of several “maps” of a time line, one per possible history. 相似文献
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Kevin Durkin Drew Nesdale Gemma Dempsey Amanda McLean 《The British journal of developmental psychology》2012,30(3):459-476
Two studies are reported in which ethnic majority children's reactions to media representations of ethnic minorities are examined. In Study 1, 20 white Scottish 6‐year‐olds viewed short television stories in which white or ethnic minority children were depicted as hostile to the participants’ in‐group (threat present) or not (threat absent). A strong effect of threat on liking was obtained but no effect of ethnicity of target and no interaction. In Study 2, 4‐ and 6‐year‐old white Scottish children viewed PowerPoint displays in which Scottish people were shown only as white (traditional version) or as ethnically diverse (multicultural version). Intergroup threat was manipulated. Again, a strong effect of threat was obtained. However, when threat was absent, participants exposed to the traditional condition liked the white out‐group more than the multi‐ethnic out‐group, while participants exposed to the multicultural condition liked the multi‐ethnic out‐group more than the white out‐group. The results are interpreted as consistent with the predictions of Social Identity Development Theory. 相似文献
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Military Veterans' Experiences with Suicidal Ideation: Implications for Intervention and Prevention 下载免费PDF全文
Lauren M. Denneson PhD Alan R. Teo MD MS Linda Ganzini MD MPH Drew A. Helmer MD MS Matthew J. Bair MD MS Steven K. Dobscha MD 《Suicide & life-threatening behavior》2015,45(4):399-414
We sought to understand Operation Enduring Freedom and Operation Iraqi Freedom (OEF/OIF) veterans' experiences with suicidal ideation. Semi‐structured interviews with 34 OEF/OIF veterans addressed circumstances leading up to disclosure of suicidal ideation during brief clinical assessments. We used an iterative, inductive and deductive thematic analysis approach. Results revealed three pervasive, persistent domains that reinforce the uniqueness of veteran suicidal thoughts: military culture, difficult deployment experiences, and postdeployment adjustment challenges. Within postdeployment, we identified four themes that serve as intervention targets: adjusting to civilian culture, changes to sense of self, feeling overwhelmed by stressors, and lacking life purpose or meaning. 相似文献
200.
Drew McDermott 《Cognitive Science》1978,2(2):71-109
A new theory of problem solving is presented, which embeds problem solving in the theory of action; in this theory, a problem is just a difficult action. Making this work requires a sophisticated language for-talking about plans and their execution. This language allows a broad range of types of action, and can also be used to express rules for choosing and scheduling plans. To ensure flexibility, the problem solver consists of an interpreter driven by a theorem prover which actually manipulates formulas of the language. Many examples of the use of the system six given. including an extended treatment of the world of blocks. Limitations and extensions of the system are discussed at length. It is concluded that a rule-based problem solver is necessary and feasible, but that much more work remains to be done on the underlying theory of planning and acting. 相似文献