After completing a personality inventory (MMPl) and being measured for weight, height, and body fat, 57 male volunteer test subjects vers exposed nude to successive climatic conditions of 70℉., 50％ R.H., no wind; 50℉., 50％ R.H., 5 mph wind; and 78℉., 50％ R.H., no wind; for" periods of 30, 75, and 115 minutes respectively. Skin and rectal tempera-tures were recorded during all three periods; subjective responses re¬garding feelings of warmth were obtained during the 75-ninute cold exposure period. Major findings were:(l) subjects whose combined scores on the personality measure deviated widely from the group norm took significantly longer than less deviant subjects to show a rise in rectal temperature following exposure to the cold, (2) heavy, large men felt warmer than light, small men during exposure to the same cold condition, (3) heavy, large men showed the same rectal temperature change in the cold as did light, small men, (4) light, small men showed faster rectal temperature recovery rates than heavy, large men.
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