AbstractsPsychology

The subjects were twenty-four 200 to 220 gm, male hooded rats from the Royal Victoria colony. All animals were constantly supplied with food and water, with either one or two rats in a cage. The apparatus was a slight modification of the one used by Thompson and Bryant (195.5). It consisted of a V-shaped choice chamber, 5" wide at the narrow end and 14" wide at the wide end, and a goal box, 14" wide and 12" long. Both choice chamber and goal box bad light-brown walls 13" high. The choice chamber had a grid floor, while the floor of the goal box was made of wood. Two windows at the wide end of the choice chamber, each 4" x 41/2", 3” apart and 1” from the bottom, provided the only entrances into the goal box.