One hundred and fifty 23-hr. deprived rats were run in a 2 × 5 × 3 balanced analysis of variance design to determine the effect of prior shock on food intake. The main factors were time spent in shock box (3, 30 sec.), intensity of shock (0, 0.5, 1.5, 2.5, 3.5 mA) and percentage of sucrose adulteration of food (0, 10, 25 per cent).
Results showed a general enhancement of intake following 3-sec. shock and a suppression following 30-sec. shock. Variations in shock intensity were of no significance.
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