Richard Langdon

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Phonological similarity of visually presented list items impairs short-term serial recall. Lists of long words are also recalled less accurately than are lists of short words. These results have been attributed to phonological recoding and rehearsal. If subjects articulate irrelevant words during list presentation, both phonological similarity and word(More)
Pairs of transcriptional activators in prokaryotes have been shown to activate transcription synergistically from promoters with two activator binding sites. In some cases, such synergistic effects result from cooperative binding, but in other cases each DNA-bound activator plays a direct role in the activation process by interacting simultaneously with(More)
Cover photograph. The confluence of Ely Brook, flowing from the back to the front of the scene, with Schoolhouse Brook, flowing from left to right. For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit or call 1-888-ASK-USGS For an(More)
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