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91.
Basic researchers, but not most applied researchers, have assumed that the behavior-decelerating effects of noncontingent reinforcement result at least partly from adventitious reinforcement of competing behaviors. The literature contains only sketchy evidence of these effects because few noncontingent reinforcement studies measure alternative behaviors. A laboratory model is presented in which concurrent schedules of contingent reinforcement were used to establish a \"target\" and an \"alternative\" behavior. Imposing noncontingent reinforcement decreased target behavior rates and increased alternative behavior rates, outcomes that were well described by the standard quantitative account of alternative reinforcement, the generalized matching law. These results suggest that adventitious reinforcement of alternative behaviors can occur during noncontingent reinforcement interventions, although the range of conditions under which this occurs remains to be determined in future studies. As an adjunct to applied studies, laboratory models permit easy measurement of alternative behaviors and parametric manipulations needed to answer many research questions. 相似文献
92.
A successful vision system must solve the problem of deriving geometrical information about three-dimensional objects from two-dimensional photometric input. The human visual system solves this problem with remarkable efficiency, and one challenge in vision research is to understand how neural representations of objects are formed and what visual information is used to form these representations. Ideal observer analysis has demonstrated the advantages of studying vision from the perspective of explicit generative models and a specified visual task, which divides the causes of image variations into the separate categories of signal and noise. Classification image techniques estimate the visual information used in a task from the properties of “noise” images that interact most strongly with the task. Both ideal observer analysis and classification image techniques rely on the assumption of a generative model. We show here how the ability of the classification image approach to understand how an observer uses visual information can be improved by matching the type and dimensionality of the model to that of the neural representation or internal template being studied. Because image variation in real world object tasks can arise from both geometrical shape and photometric (illumination or material) changes, a realistic image generation process should model geometry as well as intensity. A simple example is used to demonstrate what we refer to as a “classification object” approach to studying three-dimensional object representations. 相似文献
93.
We investigated the joint mediating effects of injuries and stress on the relationship between abuse and women's health. A community sample of 397 women, half of whom had been assaulted by an intimate partner within the prior 6 months, was interviewed about their experience of intimate partner violence, injuries, stress, income, depression, and physical health problems. Structural equation modeling techniques confirmed the complex model of hypothesized indirect effects of abuse on women's physical health problems through injuries, stress, and depression. Stress accounted for 80% of the indirect effect of abuse on women's physical health. Its direct effect on physical health was somewhat larger than its indirect effect through depression, but both processes played a key role in determining the effect of abuse on women's physical health problems. Furthermore, abuse was a stronger predictor of women's stress than was poverty. Implication and future research are discussed. 相似文献
94.
Edward H. Fischer Ellen A. Dornelas Carolyn S. Malchodi Cheryl A. Oncken 《Journal of applied social psychology》2006,36(12):2825-2833
Two independent samples of pregnant smokers were interviewed about their cigarette smoking and were tested with biochemical markers at the beginning and end of their pregnancies. Participants were mainly unmarried, racial minorities (chiefly Hispanic), and residents of the inner city. Phi coefficients between self‐reported and chemical indicators ranged from .42 to .74. Contrary to expectations, the self‐report/biochemical‐measure correlations were higher at the end than at the beginning of the pregnancy term. The higher end‐of‐term correspondence between self‐report and chemical indicators likely reflected better reliability of the measures, when taken at term. The results are in accord with earlier research with other populations, indicating adequate validity for self‐reported smoking. 相似文献
95.
Carla Adksion‐Bradley Darrell Johnson JoAnn Lipford Sanders Lonnie Duncan Cheryl Holcomb‐McCoy 《Counseling and values》2005,49(2):147-154
In the field of counseling, there has been a growing awareness of the important role the Black church plays in African American communities. Although counseling professionals have begun recognizing the influence the Black church has in the lives of African Americans, there seems to be little information on how counselors can collaborate with African American congregations to meet the mental health needs of African American clients. The authors examine how counselors can use the psychological and social strengths of the Black church. Strategies and implications for collaborating with this institution are also discussed. 相似文献
96.
Cheryl B. Aspy Roy F. Oman Sara K. Vesely Kenneth McLeroy Sharon Rodine LaDonna Marshall 《Journal of counseling and development : JCD》2004,82(3):268-276
The authors explored adolescent physical fighting and weapon carrying, using in‐home interviews with 1,098 middle/high school students and their parents. Logistic regression analyses examined the relationship between youth assets and the risk behaviors while controlling for demographic information. Both demographic factors and assets were associated with no physical fighting, and 6 of 9 assets were linked to not carrying a weapon. These findings indicate that certain assets may protect youth from physical fighting and carrying a weapon. 相似文献
97.
Evelyn G. Schaefer Michael K. Halldorson Cheryl Dizon-Reynante 《Memory (Hove, England)》2013,21(3):251-266
The flashbulb accounts of 38 participants concerning the September 11th 2001 terrorist attack reported at both 28 hours and 6 months following the event were examined for quantity, quality, and consistency as a function of the time lapse between first learning of the event and initial viewing of media images. The flashbulb accounts of those who reported seeing images at least an hour after learning of the event differed qualitatively, but not quantitatively, from accounts of participants who reported seeing images at the same time as or within minutes of learning of the event. Delayed viewing of images resulted in less elaborate and generally less consistent accounts across the 6-month interval. The results are discussed in terms of factors affecting flashbulb memory formation and individual differences in connectedness to the event. 相似文献
98.
This study is one of the first tests of key implicit claims of Hay and Nye’s theory of children’s spirituality and spiritual development. Two quasi-experimental studies tested two claims: that exposure to six conditions posited as fostering relational consciousness in a programme of spiritual formation promotes spiritual well-being; that the effect of the conditions continues after exposure ends. The results for Study One revealed that length of exposure to any of the six conditions was not a significant predictor of spiritual well-being, F(3, 179)?=?1.49, p = 0.22. Study Two results indicated that as the length of time since exposure increased so did spiritual well-being, r(38)?=?0.39, p = 0.01 at the bivariate level, and F(4, 35)?=?2.4, p = 0.06 in the regression. These results reveal a possible relationship between exposure to the six conditions and spiritual well-being. 相似文献
99.
The purposes of this study were to examine group differences in sexual media consumption and to explore how well adolescents' sexual attitudes and behavior can be explained by viewing of sexually suggestive dialogue (SD) and explicit sexual content (SC) in television media. Participants were 473 male and female high school adolescents who were racially, economically, and age diverse. Television viewing was coded for SD and SC. Both length of time spent watching SD and SC and explicitness of the SD and SC to which adolescents were exposed were factored into the coding scheme. In this sample, SD and SC consumption varied by subgroup and explained variance in some sexual attitudes and behavior variables but not others, and in some demographic subgroups but not others. 相似文献
100.
Thioux M Stark DE Klaiman C Schultz RT 《Journal of experimental psychology. Human perception and performance》2006,32(5):1155-1168
Some individuals are able to determine the weekday of a given date in a few seconds (finding for instance that June 12, 1900, was a Tuesday). This ability has fascinated scientists for many years because it is predominantly observed in people with limited intelligence and may appear very early in life. Exceptional visual memory, exceptional concentration abilities, or privileged access to lower levels of information not normally available through introspection have been advanced to explain such phenomena. In the present article, the authors show that a simple cognitive model can explain all aspects of the performance of Donny, a young autistic savant who is possibly the fastest and most accurate calendar prodigy ever described. 相似文献