4 found
  1.  20
    Are Theories of Selection Necessary?H. S. Pennypacker - 2001 - Behavioral and Brain Sciences 24 (3):549-550.
    This commentary is an attempt to sharpen some of the issues raised in the paper and thereby increase the generality of the proposal. Some implications of an exact definition of behavior for strategies of measurement and hence behavioral variability are discussed. The role of both respondent and operant behavior in natural selection is emphasized.
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  2.  8
    External Inhibition of the Conditioned Eyelid Reflex.H. S. Pennypacker - 1964 - Journal of Experimental Psychology 67 (1):33.
  3.  4
    Differential GSR Conditioning as a Function of the CS-UCS Interval.H. D. Kimmel & H. S. Pennypacker - 1963 - Journal of Experimental Psychology 65 (6):559.
  4.  1
    Conditioned Diminution of the Unconditioned Response as a Function of the Number of Reinforcements.H. D. Kimmel & H. S. Pennypacker - 1962 - Journal of Experimental Psychology 64 (1):20.