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Introduction     
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The ability to transfer learning across contexts is an adaptive skill that develops rapidly during early childhood. Learning from television is a specific instance of transfer of learning between a two-dimensional (2D) representation and a three-dimensional (3D) object. Understanding the conditions under which young children might accomplish this particular kind of transfer is important because by 2 years of age 90% of US children are viewing television on a daily basis. Recent research shows that children can imitate actions presented on television using the corresponding real-world objects, but this same research also shows that children learn less from television than they do from live demonstrations until they are at least 3 years old; termed the video deficit effect. At present, there is no coherent theory to account for the video deficit effect; how learning is disrupted by this change in context is poorly understood. The aims of the present review are: (1) to review the conditions under which children transfer learning between 2D images and 3D objects during early childhood and (2) to integrate developmental theories of memory processing into the transfer of learning from media literature using Hayne’s (2004) developmental representational flexibility account. The review will conclude that studies on the transfer of learning between 2D and 3D sources have important theoretical implications for general developmental theories of cognitive development, and in particular the development of a flexible representational system, as well as policy implications for early education regarding the potential use and limitations of media as effective teaching tools during early childhood.  相似文献   
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Despite the multitude of negative outcomes associated with thin-ideal internalization for girls and women living in westernized societies, we know very little about how early in development thin-ideal internalization occurs or how it might manifest in very young children. This cross-sectional investigation assessed body size stereotyping and thin-ideal internalization in 55 preschool girls (ages 3–5 years) from the Southwestern U.S. using a new method of assessment that is more sensitive to the cognitive developmental stage of this age group. Results suggest that girls as young as 3 years old are already emotionally invested in the thin ideal. Discussion considers moving beyond the demonstration of fat stigmatization per se to measure how personally invested preschool children may be in beauty ideals.  相似文献   
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Problems of memory and attention following cancer chemotherapies have gained increasing research attention in the last 2 decades. The President’s Cancer Panel and the National Coalition for Cancer Survivorship formally recognized the problem as a quality of life matter in the 1990s (Ferrell and Hassey in Oncology 11:565–576, 1997; President’s Cancer Panel in Cancer Care Issues in the United States: Quality of Care, Quality of Life, National Cancer Program, National Cancer Institute, 1999). In combination with an aging population, advances in biomedical technologies for detection and treatment of life-threatening cancers, more people than ever are living with cancer or have been diagnosed and treated for cancer. An estimated 10-million individuals living in the U.S. are considered to be in “cancer survivorship” (Institute of Medicine 2005). Given the potential large scope of the problem of cognitive effects of cancer chemotherapies, there is a strong demand to address this survivorship matter and develop methods to optimally manage it. This article will summarize the current knowledge of chemotherapy-related cognitive change and describe a developing cognitive-behavioral treatment that is being studied to aid survivors with chemotherapy-related cognitive problems.  相似文献   
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