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開車時我們可以一邊聽著廣播一邊留意周遭交通狀況－－同時完成各個不同的複雜任務並不困難。但你若要聽清楚兩個人同時跟你說的一字一句，我們的知覺系統就會忙不過來了。
康乃爾大學的新研究指出，人可以成功地在同時間接收多重訊號－－只要這些訊息來源不要是同一種類即可。此研究是心理系副教授克里斯坦森與任教於印第安那大學的美國國家衛生院研究員康威共同完成。
克里斯坦森表示，人們「藉由同時接收多重訊息的經驗，已經會將這些訊息化為序列結構來依序處理，只要訊息來源的特性不相互重複。」
當受試者在同時得要接收不同的複雜項目時會感到有些困難，例如當聲調與顏色配對出現，或甚至是聲調與說話的配對。
康威說「然而，當兩種要接收的訊息來自同類的刺激時，他們的表現會變得一塌糊塗。整體而言，這些研究結果顯示人們有強大的接收學習系統，當同時接收來自周遭環境中各種截然不同的訊息來源時，學習的效果就會顯現。」
研究將會載於十月號的心理科學期刊。
Multitasking Is No Problem, But Double Talk Overwhelms Us
We can listen to a car radio and drive while keeping an eye on changing traffic conditions -- separate complex tasks completed without much trouble. But if two people are talking to us at the same time, our perceptual frequencies get jammed.
A new Cornell study shows that people are pretty good at perceptual multitasking -- except when multiple sources of incoming stimuli are of the same type. Morten Christiansen, associate professor of psychology, co-authored the study with Christopher Conway, a National Institutes of Health research fellow at Indiana University.
Humans learn "sequential structure from multiple sources at the same time, as long as the sensory characteristics of the sources do not overlap," Christiansen said.
Participants in the study experienced little difficulty learning complex structures streamed at them simultaneously, such as tones and colors or even tones and speech.
"However, performance dropped when the two sets of sequences were from the same perceptual class of stimuli, such as two sets of speech stimuli," said Conway. "Overall, these results show that humans have a powerful learning system that is capable of learning sequential patterns simultaneously from multiple environmental sources -- provided each source is perceived as being distinct."
The study will appear in Psychological Science in October
From ScienceDaily (2006/10/8)
康乃爾大學的新研究指出，人可以成功地在同時間接收多重訊號－－只要這些訊息來源不要是同一種類即可。此研究是心理系副教授克里斯坦森與任教於印第安那大學的美國國家衛生院研究員康威共同完成。
克里斯坦森表示，人們「藉由同時接收多重訊息的經驗，已經會將這些訊息化為序列結構來依序處理，只要訊息來源的特性不相互重複。」
當受試者在同時得要接收不同的複雜項目時會感到有些困難，例如當聲調與顏色配對出現，或甚至是聲調與說話的配對。
康威說「然而，當兩種要接收的訊息來自同類的刺激時，他們的表現會變得一塌糊塗。整體而言，這些研究結果顯示人們有強大的接收學習系統，當同時接收來自周遭環境中各種截然不同的訊息來源時，學習的效果就會顯現。」
研究將會載於十月號的心理科學期刊。
Multitasking Is No Problem, But Double Talk Overwhelms Us
We can listen to a car radio and drive while keeping an eye on changing traffic conditions -- separate complex tasks completed without much trouble. But if two people are talking to us at the same time, our perceptual frequencies get jammed.
A new Cornell study shows that people are pretty good at perceptual multitasking -- except when multiple sources of incoming stimuli are of the same type. Morten Christiansen, associate professor of psychology, co-authored the study with Christopher Conway, a National Institutes of Health research fellow at Indiana University.
Humans learn "sequential structure from multiple sources at the same time, as long as the sensory characteristics of the sources do not overlap," Christiansen said.
Participants in the study experienced little difficulty learning complex structures streamed at them simultaneously, such as tones and colors or even tones and speech.
"However, performance dropped when the two sets of sequences were from the same perceptual class of stimuli, such as two sets of speech stimuli," said Conway. "Overall, these results show that humans have a powerful learning system that is capable of learning sequential patterns simultaneously from multiple environmental sources -- provided each source is perceived as being distinct."
The study will appear in Psychological Science in October
From ScienceDaily (2006/10/8)
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