A battery of tests measuring 7 psychomotor skills were administered to Ss under 5 conditions: an older pressure suit, pressurized and unpressurized; a more recent pressure suit, pressurized and unpressurized; and shirtsleeve conditions. Test performance involving manual dexterity with and without tools was degraded more by suit conditions than was test performance involving arm and wrist movement such as tracking. Performance with the older, USN Mark IV suit at 2.0 psig closely approximated performance with the Gemini 3C-8 at 35 psig, which supports the feasibility of using older suits for selected types of psychomotor research.
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