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Future Theory (future + theory)
Selected AbstractsChildren's Language Learning: An Interactionist PerspectiveTHE JOURNAL OF CHILD PSYCHOLOGY AND PSYCHIATRY AND ALLIED DISCIPLINES, Issue 1 2000Robin S. Chapman This review of children's language learning considers historical accounts of acquisition and individual variation, recent advances in methods for studying language learning, research on genetic and environmental input that have contributed to the interactionist perspective, and the relevance of cross-disciplinary work on language disorders and the biology of learning to future theories. It concludes that the study of children's language development is converging on an interactionist perspective of how children learn to talk, incorporating the contributions of both nature and nurture to emergent, functional language systems. Language learning is viewed as an integration of learning in multiple domains. [source] Theory-Based Determinants of Youth Smoking: A Multiple Influence Approach,JOURNAL OF APPLIED SOCIAL PSYCHOLOGY, Issue 1 2004Scott C. Carvajal This study tested a broad array of determinants of smoking grounded in general social psychological theories, as well as personality and social development theories. Using data from 2,004 middle school students, all proximal and distal determinants significantly predicted smoking in the hypothesized direction. Further, hierarchical logistic regressions showed that intention to smoke, positive and negative attitudes toward smoking, impediments to smoking, self-efficacy to resist smoking, parent norms, and academic success most strongly predicted current smoking. Hierarchical linear regressions suggested that parental relatedness, maladaptive coping strategies, depression, and low academic aspirations most strongly predicted susceptibility to smoking for those who had not yet smoked a cigarette. Global expectancies were the strongest predictor of susceptibility in low socioeconomic status students. These findings may guide the development of future theory-based interventions that produce the greatest reductions in youth smoking. [source] Effects of Gain Versus Loss Frame Antidrug Ads on AdolescentsJOURNAL OF COMMUNICATION, Issue 3 2008Hyunyi Cho Improving the effectiveness of antidrug ads is an important public health concern. Central to achieving this aim is identifying the message strategies that address the differential characteristics of adolescent audiences. This study examined the effects of gain versus loss frame antidrug ads on adolescents with different social and behavioral characteristics. A posttest-only experiment was conducted to examine if these audience factors moderate the effects of message framing. Loss-frame messages, rather than gain-frame messages, were more persuasive for adolescents who report that their friends use drugs. Neither gain nor loss framing had a persuasive advantage for adolescents who report that their friends do not use drugs, although this outcome may be the result of a ceiling effect. Implications of the results for future theory and research are discussed. [source] Reconciling plant strategy theories of Grime and TilmanJOURNAL OF ECOLOGY, Issue 6 2005JOSEPH M. CRAINE Summary 1The theories of Grime and Tilman are ambitious attempts to unify disparate theories regarding the construction of plants, their interaction with the environment and the assembly of communities. After over two decades of parallel research, their ideas have not been reconciled, hindering progress in understanding the functioning of ecosystems. 2Grime's theories do not adequately incorporate the importance of non-heterogeneous supplies of nutrients and how these supplies are partitioned over long time scales, are inconsistent regarding the importance of disturbance in nutrient-limited habitats and need to reconsider the carbon economy of shade-tolerant plants. 3Failure to account for differences between aquatic and terrestrial systems in how resource supplies are partitioned led Tilman to develop a shifting set of theories that have become reduced in mechanistic detail over time. The most recent highlighted the reduction of nutrient concentrations in soil solution, although it can no longer be derived from any viable mechanistic model. The slow diffusion of nutrients in soils means that the reduction of average soil solution nutrient concentrations cannot explain competitive exclusion. 4Although neither theory, nor a union of the two, adequately characterizes the dynamics of terrestrial plant assemblages, the complementarity in their assumptions serve as an important foundation for future theory and research. 5Reconciling the approaches of Grime and Tilman leads to six scenarios for competition for nutrients and light, with the outcome of each depending on the ability of plants to pre-empt supplies. Under uniform supplies, pulses or patches, light competition requires leaf area dominance, while nutrient competition requires root length dominance. There are still important basic questions regarding the nature of nutrient supplies that will need to be answered, but recent research brings us closer to a unified set of theories on resource competition. [source] Is There Life After Policy Streams, Advocacy Coalitions, and Punctuations: Using Evolutionary Theory to Explain Policy Change?POLICY STUDIES JOURNAL, Issue 4 2003Peter John This article reviews the current state of public policy theory to find out if researchers are ready to readdress the research agenda set by the classic works of Baumgartner and Jones (1993), Kingdon (1984) and Sabatier and Jenkins-Smith (1993). After reviewing the influences of institutional, rational choice, network, socio-economic and ideational approaches, the article pays tribute to the policy streams, punctuated equilibrium and policy advocacy coalition frameworks whilst also suggesting that future theory and research could identify more precisely the causal mechanisms driving policy change. The article argues that evolutionary theory may usefully uncover the micro-level processes at work, particularly as some the three frameworks refer to dymamic models and methods. After reviewing some evolutionary game theory and the study of memes, the article suggests that the benefits of evolutionary theory in extending policy theories need to be balanced by its limitations. [source] | |||||||||||||