Poggendorf illusion,
457, 459
Practice,
177, 298, 304-310, 314-317, 321-327, 360-363, 433, 538;
curve, 307, 316, 321, 325, 390, 542
Preparation for action,
22-25, 72, 74-77, 427-430
Preparatory reactions,
77-84, 111-112, 125-128, 132, 139-140, 145, 147
Prestige,
549