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第1段
1 .<-NARRATOR:-> Now listen to part of a lecture on this topic in a psychology class.
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第2段
1 .<-MALE PROFESSOR:->Some researchers did an experiment related to this.
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2 .What they did was,
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3 .they assembled a group of subjects, a group of students...
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4 .And they showed these students a series of geometrical shapes.
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5 .These were very distinctive shapes, a little unusual,
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6 .not the kind of shapes the students often see.
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7 .But they only showed the students the shapes for a very short period of time-
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8 .about a second. They also lowered the light in the room,
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9 .to make it even more difficult for the students to see the shapes.
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10 .So the shapes were there for a split second,
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11 .in dim light,
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12 .and then they were gone.
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第3段
1 .In the next step of the experiment,
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2 .the researchers again showed the students some shapes...
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3 .But this time
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4 .they gave the students a longer time to look at them.
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5 .And this time, they showed the images in pairs -
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6 .two at a time. In each pair,
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7 .one shape was a shape the students had already seen-
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8 .for just a split second, in dim light-
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9 .and the other was some other shape that hadn't been shown to them before.
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10 .After presenting each pair,
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11 .the researchers asked the students to say which of the two shapes they liked better.
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12 .Most of the time,
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13 .the students preferred the shape they'd already seen earlier in the experiment.
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14 .Now if you asked them if they'd already seen that shape,
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15 .they probably wouldn't know for sure.
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16 .But that didn't matter-
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17 .they still tended to prefer the shapes they'd already seen.
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