This article estimates the returns to membership of the Chinese Communist Party using unique twins data we collected from China. Our OLS estimate shows a Party premium of 10%, but the within-twin-pair estimate becomes zero. One interpretation is that the OLS premium is due to omitted ability and family background. This interpretation suggests that Party members fare well not because of their political status but because of the superior ability that made them Party members. The estimates are also consistent with another interpretation that Party membership not only has its own effect but also has an external effect on siblings. Copyright 2007 The Author(s). Journal compilation Royal Economic Society 2007.

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Mulberry-like" CdSe nanoclusters with well-defined crystallinity have been assembled into vertically aligned TiO 2 nanotubes by photo-assisted electrodeposition method to form new architecture for fabricating semiconductor nanocrystal sensitized photovoltaic cell. The multiple staked "mulberrylike" CdSe nanoclusters, caused by the synergistic effect of photoetching and electrodeposition, broaden the absorption spectra to entire visible region with a promising behavior of photoinduced charge separation. A photocurrent density of 16 mA cm -2 was achieved under 100 mW cm -2 visible light illumination with 0 V bias potential (vs SCE). The remarkable photoresponse should be ascribed to the high-quality of 3-D multijunction structure and the driving force for electron transfer in "mulberrylike" nanoclusters. The experimental demonstration provides a strategy for integrating novel "mulberry-like" nanoclusters to fabricate semiconductor nanocrystal sensitized photovoltaic cells.

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