1. AMSEL, A. 1950 The effect upon level of consummatory response of the addition of anxiety to a motivational complex. J. exp. Psychol., 40, 709-715.
2. AMSEL, A., & COLE, K. F. 1953 Generalization of fear-motivated interference with water intake. J. esp. Psychol., 46, 243-247.
3. ANNAU, Z., & KAMIN, L. J. 1961 The conditioned emotional response as a function of intensity of the US. J. comp. physiol, Psychol., 54, 428-432.
4. AYRES, J. J. B. 1968 Differentially conditioned suppression as a function of shock intensity and incentive. J. comp. physiol. Psychol., 66, 208-210.
5. BRADY, J. V., & HUNT, H. F. 1955 An experimental approach to the analysis of emotional behavior. J. Psychol., 40, 313-324.