Eighty-four undergraduate male subjects were tachistoscopically exposed either to an experimental message designed to arouse anxiety , or to a neutral control message , at 4 ms or 200 ms durations. Electrodermal responses were recorded before, during and after exposure to the critical messages. Three measures of awareness of 4 ms stimuli were used; recall, recognition and discrimination. No evidence of stimulus awareness was found on any of these measures. Only subjects exposed to the experimental message at 4 ms durations (...) showed a significant increase in EDR from pre-exposure to message exposure period. These results support Silverman's hypothesis that drive-related stimuli must be presented subliminally in order to produce significant effects on behavior, and are consistent with Bornstein's hypothesis that stimulus awareness inhibits responding to drive- and affect-related stimuli. (shrink)

Clinical psychologists, cognitive psychologists, neuropsychologists, social psychologists and developmental psychologists have all become increasingly interested in studying unconscious mental processes empirically. In the words of the editors, The study of the unconscious has the potential to become the unifying force in psychology, linking cognition and emotion, infancy and old age, normal and pathological development, brain and psyche.

Few theories have influenced Western thought as much as psychoanalysis has, even in the absence of empirically confirmatory evidence. The raw data of psychoanalysis are the words and actions of the patient and their interpretation by the analyst. The psychoanalytic session has excluded other observers and, until very recently, even a tape recorder. The only evidence of what transpired between patient and therapist was supplied by the memories, accounts, and records each of them might have kept. The degree to which (...) each could be objective and veridical in recording the events in treatment is not known, but given the intense, emotional nature of the clinical interaction, it is likely that systematic distortions, omissions, and inventions occurred. Various writers have called attention to the lack of scientific investigation of psychodynamic propositions. This series is intended to describe the best and most current experimental work inspired by psychoanalytic theories. A scientific theory is expected to generate data that will force it to be revised and ultimately discarded. Most of the experiments reported in this series point to instances where the theory must be modified to fit the data more exactly. (shrink)