1. Indeterminacy, the synapse, the mnemic microstate, and the psyche

   • John C. Lamb
   • James P. Isaacs

   Editorial Pages: 1 - 5

2. Failure to develop a conditional reflex by stimulation of the cephalad portion of the severed vagosympathetic trunk: Its significance in terms of the central connections of the vagus

   • E. Cowles Andrus
   • W. Horsley Gantt
   • K. Gross

   OriginalPaper Pages: 6 - 19

3. Behavioral comparisons of nervous, stable, and crossbred pointers at ages 2, 3, 6, 9, and 12 months

   • Oddist D. Murphree
   • John E. Peters
   • Roscoe A. Dykman

   OriginalPaper Pages: 20 - 23

4. Reinforcement strength in classical conditioning of leg flexion, freezing, and heart rate in cats

   • Alfred Bruner

   OriginalPaper Pages: 24 - 31

5. The effect of UCS intensity in classical and avoidance GSR conditioning

   • H. D. Kimmel
   • E. B. Kimmel
   • A. I. Silver

   OriginalPaper Pages: 32 - 51

6. Perseveration of cardiac-rate effects in the rhesus monkey following pavlovian conditioning

   • Ovide F. Pomerleau
   • Arthur G. Snapper
   • William N. Schoenfeld

   OriginalPaper Pages: 52 - 58

7. A three-electrode system for EKG recording and aversive shock

   • Ovide F. Pomerleau

   OriginalPaper Pages: 59 - 60