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7
result(s) for
"Risky Formation"
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Neoproterozoic slope deposits, Mackenzie Mountains, northwestern Canada; implications for passive-margin development and Ediacaran faunal ecology
by
Dalrymple, Robert W
,
MacNaughton, Robert B
,
Narbonne, Guy M
in
Blueflower Formation
,
burrows
,
Canada
2000
The youngest formations of the Neoproterozoic Windermere Supergroup in northwestern Canada (Gametrail, Blueflower, and Risky formations) record the transition from slope to shelf deposition on a prograding passive margin. Eleven facies associations are recognized, representing environments ranging from carbonate- and siliciclastic- dominated continental slope to open carbonate shelf and siliciclastic shoreface. Seven simple sequences are recognized, which can be grouped into three composite sequences. Combination of the data presented here with previous work on underlying and overlying formations indicates that the sequence-stratigraphic record is least detailed in the deepest-water facies and most detailed in shelf facies, reflecting the relative inability of high-frequency relative sea-level oscillations to affect deposition in deep-water settings. Falling-stage deposits are especially common in the upper slope region. Several major sequence boundaries (unconformities) are clustered in the interval a short distance below the Precambrian-Cambrian boundary. The most significant of these occurs high in the Blueflower Formation, not at the top of the Risky Formation as commonly inferred. This interval containing several surfaces may reflect thermal uplift related to the rifting recorded in rocks of this age in the southern Canadian Cordillera. Renewed subsidence (thermal relaxation) commenced just prior to the Neoproterozoic-Cambrian boundary, giving rise to a thick succession of shelf to nonmarine basal-Cambrian deposits. Ediacaran body fossils previously reported from the studied units occur in a range of slope to shoreface environments, including some facies that were deposited below the photic zone. The most common taxa occur across a spectrum of facies and were apparently ecological generalists.
Journal Article
Risky Sexual Behaviors as a Transaction of Individual Differences and Situational Context
by
South, Susan C.
,
Smith, Madison Shea
in
Alcohol use
,
Autobiographical literature
,
Behavioral Science and Psychology
2023
Risky sexual behaviors (RSBs) incur large societal and personal costs. Despite widespread prevention efforts, RSBs and associated consequences (e.g., sexually transmitted infections) continue to rise. A proliferation of research has emerged on situational (e.g., alcohol use) and individual difference (e.g., impulsivity) factors to explain this rise, but these approaches assume an unrealistically static mechanism underlying RSB. Because this prior research has resulted in few compelling effects, we sought to innovate by examining the interaction of situation and individual differences in explaining RSBs. A large sample (
N
= 105) completed baseline reports of psychopathology and 30 daily diary reports of RSBs and associated contexts. These data were submitted to multilevel models including cross-level interactions to test a person-by-situation conceptualization of RSBs. Results suggested that RSBs are most strongly predicted from interactions of person- and situation-level factors in both protective and facilitative directions. These interactions outnumbered main effects and commonly included partner commitment as a central mechanism. These results point to theoretical and clinical gaps in preventing RSB and urge a departure from prior ways of conceptualizing sexual risk as a static outcome.
Journal Article
Assessing the sensitivity of information distortion to four potential influences in studies of risky choice
by
Eric R. Stone
,
Clare M. Sorenson
,
Seth A. Miller
in
information distortion
,
mediation
,
memory
2013
The emergence of a leading alternative during the course of a decision is known to bias the evaluation of new information in a manner that favors that alternative. We report 3 studies that address the sensitivity of predecisional information distortion and its effects in hypothetical risky decisions with regard to 4 potential influences: choice domain, repeated choice, memory requirements, and intermediate progress questions. In Experiment 1 (N = 515), the magnitude of information distortion was similar in 5 choice domains (varied between participants) involving monetary gambles, song downloads, frequent-flyer miles, political decisions, or medical decisions. Information distortion mediated the relationship between our manipulation of initial preferences and participants’ final choices, with the magnitude of the indirect effect being roughly similar across domains. These results replicate and extend previous findings. Additionally, distortion decreased significantly over 4 similar decision problems (within participants), but remained significant in the fourth problem. In Experiment 2 (N = 214), information distortion increased significantly when previously viewed information remained available, apparently because reiterating that information strengthened emerging preferences. In Experiment 3 (N = 223), the removal of intermediate progress questions that measure information distortion and emerging preferences did not significantly affect final choices, again replicating previous results. We conclude that predecisional information distortion is a relatively stable and robust phenomenon that deserves a prominent role in descriptive theories of choice.
Journal Article
Assessing the Sensitivity of Information Distortion to four Potential Influences in Studies of Risky Choice
2013
The emergence of a leading alternative during the course of a decision is known to bias the evaluation of new information in a manner that favors that alternative. We report 3 studies that address the sensitivity of predecisional information distortion and its effects in hypothetical risky decisions with regard to 4 potential influences: choice domain, repeated choice, memory requirements, and intermediate progress questions. In Experiment 1 ( N = 515), the magnitude of information distortion was similar in 5 choice domains (varied between participants) involving monetary gambles, song downloads, frequent-flyer miles, political decisions, or medical decisions. Information distortion mediated the relationship between our manipulation of initial preferences and participants’ final choices, with the magnitude of the indirect effect being roughly similar across domains. These results replicate and extend previous findings. Additionally, distortion decreased significantly over 4 similar decision problems (within participants), but remained significant in the fourth problem. In Experiment 2 ( N = 214), information distortion increased significantly when previously viewed information remained available, apparently because reiterating that information strengthened emerging preferences. In Experiment 3 ( N = 223), the removal of intermediate progress questions that measure information distortion and emerging preferences did not significantly affect final choices, again replicating previous results. We conclude that predecisional information distortion is a relatively stable and robust phenomenon that deserves a prominent role in descriptive theories of choice.
Journal Article
Volatility Trap
2012
We study the effects of permanent and temporary income shocks on precautionary saving and investment in a \"store-or-sow\" model of growth. High volatility of permanent shocks results in high precautionary saving in the safe asset and low investment, or a \"volatility trap.\" Namely, big savers invest relatively little. In contrast, low volatility of permanent shocks leads to low precautionary saving and high or low investment, depending on the volatility of temporary shocks. Empirical evidence shows a nonlinear relationship between investment and saving and that investment is a hump-shaped function of the volatility of permanent shocks, as predicted by the model.
Argentine youth : an untapped potential
2009
Unlocking the Potential of Argentina's Youth: A Call to Action Argentine Youth: An Untapped Potential delves into the challenges and opportunities facing Argentina's 6.7 million young people, revealing that nearly half are at risk due to factors like poverty, limited education, and risky behaviors.
Berlin Workshop Series 2007 : Development and the Next Generation
by
Kochendörfer-Lucius, Gudrun
,
Pleskovic, Boris
in
ACCESS TO EDUCATION
,
ACCESS TO FAMILY PLANNING
,
ACCESS TO HEALTH SERVICES
2007
This publication discusses development challenges and successes pertaining to the young generation, while considering how economic policies can help young people during the period of most fundamental changes in their life-the transition from youth to adult status- leaving school and becoming employed, keeping healthy, starting a family, and assuming a responsible role in society. Its main message: investing in the human capital of this generation is critical if developing counties are to make further progress in stimulating growth and reducing poverty. Moreover, it is particularly important to safeguard and develop this human capital during youth transition. The book is organized thus: Part I deals with youthful transitions in a changing world, providing an overview of demographic and other socioeconomic challenges and discusses broadly the implications of these challenges on the youth population; Part II provides thoughts on the transition from schooling; Part III focuses on the youth bulge in developing economies and whether or not it can be an advantage in the labor market; Part IV considers the topic of migration and the youth and examines issues that are particularly related to immigrants and their children; Part V examines the changes in behavior of the young regarding family formation and how these changes are likely to affect the welfare of the young both now and in the future; and Part VI focuses on the concern of how to direct young people's creative potential to promote productive transition to citizenship.
Publication