Pavlovian Conditioning to Social Stimuli
Backward Masking and the Dissociation of Implicit and Explicit Cognitive Processes
Abstract
Using a Pavlovian procedure, human subjects were conditioned to pictures of angry faces with a mild electric shock as the unconditioned stimulus. They were then tested with backward masking conditions preventing conscious recognition of the facial stimuli. In the first experiment a shock followed a particular nonmasked angry face which was exposed among many other faces. Although the subjects did not rate this face as familiar in a subsequent test when is was presented masked among other masked and nonmasked faces, it elicited larger skin conductance responses than did nonshocked control faces. This dissociation between explicit recognition and implicit skin conductance differentiation was replicated in the second experiment, in which the subjects rated their shock expectancy. Although conditioning resulted in much better differentiation between conditioned and control faces during nonmasked than masked test-trials, skin conductance differentiation did not differ between the two masking conditions.
References
1988). The recognition of threatening stimuli. Journal of Personality and Social Psychology, 54, 647– 655 1988-20050-001.
(1995). Double dissociation of conditioning and declarative knowledge relative to the amygdala and hippocampus in humans. Science, 269, 1115– 1118 1996-17699-001.
(1977). The onset of contingency awareness and electrodermal classical conditioning: An analysis of the temporal relationships during acquisition and extinction. Psychophysiology, 14, 164– 171 1977-27027-001.
(1984). On being unconsciously influenced and informed. In K.S. Bowers & D. Meichenbaum (Eds.), The unconscious reconsidered (pp. 227-272). New York: Wiley.
(1988). Recognizing faces . Hove: Erlbaum.
(1994). Descartes' error: Emotion, reason, and the human brain . New York: Putnam.
(1973). Concurrent measurement of awareness and electrodermal conditioning. Journal of Experimental Psychology, 101, 55– 62 1974-10556-001.
(1985). Information processing and human classical conditioning. Advances in Psychophysiology, 1, 89– 165.
(1996). Behold the wrath: Psychophysiological responses to facial stimuli. Motivation and Emotion, 20, 149– 182 1996-06988-003.
(1976). Pictures of facial affect . Palo Alto: Consulting Psychologists Press.
(1994). Automatically elicited fear: Conditioned skin conductance responses to masked facial expressions. Cognition and Emotion, 8, 393– 413 1995-08349-001.
(1993). Masking the face: Recognition of emotional facial expressions as a functions of the parameters of backward masking. Scandinavian Journal of Psychology, 34, 1– 18 1993-39984-001.
(1994). Nonconscious associative learning: Pavlovian conditioning of skin conductance responses to masked fear-relevant facial stimuli. Psychophysiology, 31, 375– 385 1995-00838-001.
(1985). Implicit and explicit memory for new associations in normal and amnesic subjects. Journal of Experimental Psychology: Learning, Memory and Cognition, 11, 501– 518 1986-12203-001.
(1996). Affective learning: Awareness and aversion. Psychophysiology, 33, 698– 710 1996-06744-011.
(1884). What is an emotion?. Mind, 9, 188– 205.
(1990). The psychological unconscious. In L. Pervin (Ed.), Handbook of personality: Theory and Research (pp. 445-464). New York: Guilford.
(Implicit memory — Theoretical issues . Hillsdale NJ: Erlbaum.
1971). Direct measurement of skin conductance: A proposal for standardization. Psychophysiology, 8, 656– 672 1972-06203-001.
(1983). Conscious and unconscious perception: An approach to the relations between phenomenal experience and perceptual processes. Cognitive Psychology, 15, 238– 300 1983-29430-001.
(1983). The orienting response during Pavlovian conditioning. In D.A.T. Siddle (Ed.), Orienting and habituation: Perspectives in human research (pp. 315-369). Chichester: Wiley.
(1986). Face the beast and fear the face: Animal and social fears as prototypes for evolutionary analyses of emotion. Psychophysiology, 23, 123– 145.
(1992). Orienting and attention: Preferred preattentive processing of potentially phobic stimuli. In B.A. Campbell, H. Hayne, & R. Richardson (Eds.), Attention and information processing in infants and adults. Perspectives from human and animal research (pp. 263-295). Hillsdale, NJ: Erlbaum.
(1993). Fear and anxiety as emotional phenomena. In M. Lewis & J.M. Haviland (Eds.), Handbook of emotions (pp. 511-536). New York: Guilford.
(1996). Preferential preattentive processing of threat in anxiety: Preparedness and attentional biases. In R.M. Rapee (Ed.), Current controversies in the anxiety disorders (pp. 253-290). New York: Guilford.
(1993). On the automaticity of phobic fear: Conditioned skin conductance responses to masked phobic stimuli. Journal of Abnormal Psychology, 102, 121– 132.
(1994). Unconscious anxiety: Phobic responses to masked stimuli. Journal of Abnormal Psychology, 103, 231– 240.
(Emotional conditioning to masked stimuli: Expectancies for aversive outcomes following non-recognized fear-relevant stimuli. Journal of Experimental Psychology: General,.
in pressRecognition memory for masked facial stimuli. Scandinavian Journal of Psychology,.
in press1927). Conditioned reflexes . (G. V. Anrep, Trans.). Oxford: Oxford University Press.
(1961). Psychopathology and psychiatry . (D. Myshne & S. Belsky, Trans.). Moscow: Foreign Language Publishing House.
(1961). The observable unconscious and the inferable conscious in current Soviet psychophysiology: Interoceptive conditioning, semantic conditioning, and the orienting reflex. Psychological Review, 68, 81– 147 1962-00616-001.
(1987). Implicit memory: History and current status. Journal of Experimental Psychology: Learning, Memory and Cognition, 13, 501– 518.
(1970). On the generality of the laws of learning. Psychological Review, 77, 406– 418 1971-01675-001.
(1986). Microgenesis of face perception. In H.D. Ellis, M.A. Jeeves, F. Newcombe, & A. Young (Eds.), Aspects of face processing. Amsterdam: Martinus Nijhoff Publishers.
(1992). Automaticity and preattentive processing. American Journal of Psychology, 105, 341– 362 1992-41690-001.
(1989). New theoretical conceptions of social anxiety and social phobia. Clinical Psychology Review, 9, 19– 35 1989-19245-001.
(1973). Mechanisms, instrumentation, recording techniques, and quantification of responses. In W.F. Prokasy & D.C. Raskin (Eds.), Electrodermal activity in psychological research (pp. 1-24). New York: Academic Press.
(1980). Feeling and thinking — Preferences need no inferences. American Psychologist, 35, 151– 175 1980-09733-001.
(