Terry Stanard

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A simulated ball-hitting task was used to explore the optical basis for collision control. Ball speed and size were manipulated in Experiments 1 and 2. Results showed a tendency for participants to respond earlier to slower and larger balls. Early in practice, participants would consistently miss the slowest and largest balls. Experiments 3 and 4 examined(More)
In 3 experiments altitude control was examined as a function of texture type and forward speed. Four texture types were used: grid (rectangular grid with neutral colored cells); dot (small triangles distributed randomly on the ground surface); splay (rows of colored texture parallel to the direction of motion); and depression (rows of colored texture(More)
Traditional software system design focuses on the needs of the system and creates a need for users and customers to understand the system in order to use the products. This creates usability problems. Fortunately, designers and developers have steadily realized the benefits of addressing the user and customer needs. This change in mindset gives rise to(More)
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