OG涉及背景
<P align=left><STRONG>ideomotor effect/action 表意马达动作</STRONG></P>
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<P>The <B>ideomotor effect</B> is a <A title=Psychological href="http://en.wikipedia.org/wiki/Psychological">psychological</A> phenomenon where in a subject makes motions <A title="Unconscious mind" href="http://en.wikipedia.org/wiki/Unconscious_mind">unconsciously</A> (i.e., without conscious awareness). mysterious "energies," are actually due to ideomotor action。these tests demonstrate that "honest, intelligent people can unconsciously engage in muscular activity that is consistent with their expectations"<SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 12pt; FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times>How </SPAN></P>
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<P><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-SIZE: 12pt; FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times>People Are Fooled by Ideomotor Action “</SPAN><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times>Ray Hyman, Ph.D.”</SPAN></P><SPAN lang=EN-US style="FONT-WEIGHT: normal; FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times>
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>This "influence of suggestion in modifying and directing muscular movement, independently of volition" was given the label ideomotor action by the psychologist/physiologist William B. Carpenter in 1852 [4]. Later the concept was more widely publicized by the Harvard physician-turned-psychologist William James [5]. Carpenter wanted to show that a variety of currently popular phenomena had conventional scientific explanations rather than the widely believed supernatural ones. The phenomena he tackled included dowsing ("water witching"), the magic pendulum, certain aspects of mesmerism, spiritualists' "table turning," and Reichenbach's "Odylic force." Carpenter did not question the reality of the phenomena, nor the honesty of the people who were involved. He only disputed the explanation, arguing that, "All the phenomena of the 'biologized' state, when attentively examined, will be found to consist in the occupation of the mind by the ideas which have been suggested to it, and in the influence which these ideas exert upon the actions of the body." Thus Carpenter invoked ideomotor action as a nonparanormal explanation for various phenomena that were being credited to new physical forces, spiritual intervention, or other supernatural causes. He published many books and articles during the latter half of the nineteenth century expounding his ideas about ideomotor action [6,7].
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>William James [5] elaborated upon Carpenter's ideas, asserting that ideomotor activity was the basic process underlying all volitional behavior: "Wherever a movement unhesitatingly and immediately follows upon the idea of it, we have ideomotor action. We are then aware of nothing between the conception and the execution. All sorts of neuromuscular responses come between, of course, but we know absolutely nothing of them. We think the act, and it is done; and that is all that introspection tells us of the matter." James viewed ideomotor action not as a curiosity but as "simply the normal process stripped of disguise." James concluded that, "We may then lay it down for certain that every [mental] representation of a movement awakens in some degree the actual movement which is its object; and awakens it in a maximum degree whenever it is not kept from so doing by an antagonistic representation present simultaneously to the mind." Modern brain researchers have produced data and theory that help explain how quasi-independent modules in the brain can initiate motor movements without necessarily engaging the "executive module" that is responsible for our sense of self-awareness and volition.
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>Probably the first major scientist to become concerned about the mischief being created by ideomotor action, although he did not know the concept by this name, was the French chemist Michel Chevreul. Chevreul, who lived for one hundred three years, became interested in the experiments of some of his fellow chemists around the beginning of the nineteenth century. These colleagues were using what was known as "the exploring pendulum" to analyze chemical compounds.
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>The first recorded use of the exploring pendulum occurred around 371 C.E. A priest would bow over a plate, the edge of which was marked with the letters of the alphabet. This "diviner" or "oracle" would hold a ring, suspended from a thin thread, over the center of the plate. A question would be put to the priest. The movements of the ring would then be observed. When the ring was set in motion, it would swing toward one of the letters. This letter would be recorded; then the same process would be used to select another letter. This would continue until one or more words, which answered the question, would be generated. In this, we see the origins of the modern Ouija board, used to this day by occultists for divining purposes [8].
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>In the early nineteenth century, certain chemists were advocating this method for analyzing the composition of substances. In 1808, a Professor Gerboin of <CITY wst="on"><PLACE wst="on">Strasbourg</PLACE></CITY> wrote an entire book on use of the pendulum for chemical analysis [9]. As a budding scientist, Chevreul was intrigued, but he remained skeptical. He was surprised, however, to find that the pendulum worked as advertised when he tried it over a dish of mercury. He carried out more tests, however. To see if a physical force was responsible for the movement of the pendulum, he placed a glass plate between the iron ring and the mercury. To his surprise, the oscillations diminished and then stopped. When he removed the glass plate, the pendulum movements resumed. He next suspected that the pendulum moved because it was difficult to hold his arm steady. When he rested his arm on a support, the movements diminished but did not stop altogether.
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>Finally, Chevreul did what none of his predecessors had thought of doing. He conducted the equivalent of what we would call a double-blind trial. He blindfolded himself and then he had an assistant interpose or remove the glass plate between the pendulum and the mercury without his knowledge. Under these conditions, nothing happened. Chevreul concluded, "So long as I believed the movement possible, it took place; but after discovering the cause I could not reproduce it." His experiments with the pendulum show how easy it is "to mistake illusions for realities, whenever we are confronted by phenomena in which the human sense-organs are involved under conditions imperfectly analyzed." Chevreul used this principle of expectant attention to account for the phenomena of dowsing, movements of the exploring pendulum, and the then current fad among spiritualists, table-turning.
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>Chevreul was one of <COUNTRY-REGION wst="on"><PLACE wst="on">France</PLACE></COUNTRY-REGION>'s most prestigious scientists by the time he conducted these investigations. By the 1850s, table-turning (also called table-tilting or table-rapping) had become the rage among spiritualists, both in North America and in <PLACE wst="on">Europe</PLACE>. In a typical session, a small group of persons, usually called "sitters," would sit around a table with their hands resting upon its top. After an extended period of expectant waiting, a rap would be heard or the table would tilt upon one leg. Sometimes the table would sway and begin moving about the room, dragging the sitters along. Occasionally, sitters would claim that the table actually levitated off the floor. Table-turning was what first attracted many prominent scientists to the investigation of psychic phenomena. During the summer of 1853, several English scientists decided to investigate this phenomenon. Contemporary theories attributed table-turning to such things as electricity, magnetism, "attraction," the rotation of the earth, and Karl von Reichenbach's "Odylic force." Electricity, which the public at that time considered to be an occult and mystical force, was the most popular of these explanations.
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>A committee of four medical men held seances in June 1853 to investigate [10]. They discovered that the table did not move when the sitters' attention was diverted; nor did it move when they had not formed a common expectation about how the table should move. The table would not move if half the sitters expected it to move to the right and the other half expected it to move to the left. "But," the panel commented, "when expectation was allowed free play, and especially if the direction of the probable movement was indicated beforehand, the table began to rotate after a few minutes, although none of the sitters was conscious of exercising any effort at all. The conclusion was formed that the motion was due to muscular action, mostly exercised unconsciously."
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>The most publicized and carefully controlled study of table-turning was reported by Michael Faraday in 1853. Faraday obtained the cooperation of participants who he knew to be "very honorable" and who were also "successful table-movers." He found that the table would move in the expected direction, even when just one subject was seated at the table. Faraday first looked into the possibility that the movements were due to known forces such as electricity or magnetism. He showed that sandpaper, millboard, glue, glass, moist clay, tinfoil, cardboard, vulcanized rubber, and wood did not interfere with the table's movements. From these initial tests, he concluded that, "No form of experiment or mode of observation that I could devise gave me the slightest indication of any peculiar force. No attraction, or repulsion . . . nor anything which could be referred to other than mere mechanical pressure exerted inadvertently by the turner."
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<P style="mso-outline-level: 5"><SPAN lang=EN-US style="FONT-FAMILY: " bold;? mso-bidi-font-weight: Roman?; New Times><FONT size=3>By then, Faraday suspected that his sitters were unconsciously pushing the table in the desired direction. However, his sitters firmly maintained that they were not the source of the table movements. And, as already mentioned, Faraday was satisfied that his sitters were "very honorable." So he devised an ingenious arrangement to pin down the cause of the movement. He placed four or five pieces of slippery cardboard, one on top of the other, upon the table. The sheets were attached to one another by little pellets of a soft cement. The bottommost sheet was attached to a piece of sandpaper that rested against the table top. This stack of cardboard sheets was approximately the size of the table top with the topmost layer being slightly larger than the table top. The edge of each layer in this cardboard sandwich slightly overlapped the one below. To mark their original positions, Faraday drew a pencil line across these exposed concentric borders of the cardboard sheets, on their under surface. The stack of cardboard sheets was secured to the table top by large rubber bands which insured that when the table moved, the sheets would move with it. However, the bands allowed sufficient play to permit the individual sheets of cardboard to move somewhat independently of one another. The sitter then placed his hands upon the surface of the top cardboard layer and waited for the table to move in the direction previously agreed upon. Faraday reasoned that if the table moved to the left, and the source of the movement was the table and not the sitter, the table would move first and drag the successive layers of cardboard along with it, sequentially, from bottom to top, but with a slight lag. If this were the case, the displaced pencil marks would reveal a staggered line sloping outwards from the left to the right. On the other hand, if the sitter was unwittingly moving the table, then his hands would push the top cardboard to the left and the remaining cardboards and the table would be dragged along successively, from top to bottom. This would result in displacement of the pencil marks in a staggered line sloping from right to left. Faraday observed that, "It was easy to see by displacement of the parts of the line that the hand had moved further from the table, and that the latter had lagged behind -- that the hand, in fact, had pushed the upper card to the left and that the under cards and the table had followed and been dragged by it."
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