Herbert H. Bell

Learn More
Is the perception of velocity determined by the prior discrimination of spatial and temporal distances? Two experiments sought to answer this question by comparing the discriminabilities of moving stimuli varied in spatial extent, temporal duration, or in redundant combinations of both variables. The subject's task was to identify which of two alternative(More)
The Air Force's Armstrong Laboratory recently developed a distributed interactive simulation system. The purpose of this system is to support training effectiveness research involving combat skills. Currently, this simulation system provides the laboratory with most of the air combat simulation capabilities found in more expensive full mission simulators.(More)
Approved for public release; distribution is unlimited. NOTICES This paper is published in the interest of scientific and technical information exchange and its publication does not constitute the Government's approval or disapproval of its idea or findings. When US Government drawings, specifications, or other data are used for any purpose other than a(More)
Four experiments investigated the role of pattern goodness in backward masking using five- and four-dot patterns constructed by placing dots in the cells of a 3 x 3 matrix. In Experiment 1, subjects rated the goodness of these patterns and the results replicated previous work showing that good patterns had few alternatives. In Experiment 2, the dot patterns(More)
Using Government drawings, specifications, or other data included in this document for any purpose other than Government procurement does not in any way obligate the U.S. Government. The fact that the Government formulated or supplied the drawings, specifications, or other data does not license the holder or any other person or corporation; or convey any(More)
Using Government drawings, specifications, or other data included in this document for any purpose other than Government procurement does not in any way obligate the U.S. Government. The fact that the Government formulated or supplied the drawings, specifications, or other data does not license the holder or any other person or corporation; or convey any(More)
  • 1