Attention

Message A

Message B

Message C

Message D

Selective Filter

Limited capacity decision channel

Long term

memory

B Responses

感覺 知覺

Senses are the physiological methods of perception.

STM & WM

感官刺激、淺層記憶、深層記憶與學習

Cocktail party effect

Broadbent’s （ 1958 ） Filter Theory of Selective Attention

• Selective attention is what people colloquially think of when they think of "attention." It is attending to one stimuli while ignoring other competing stimuli.

Three primary theories of selective attention

• Filter theory ： Attention filters out extraneous information

– Basic filter theory (Broadbent) – Attenuation （ weakened ） theory (Triesman) – Late-filter theory （ only some conscious ） (Deutsch & Deutsc

h)

• Bottleneck theory ： Attention is a bottleneck that prevents extraneous information from getting through. (Similar to filter theory)

• Resource theory ： Attention is a resource-based process, and once the resource is used up, no other information can be attended to.

– Driving and conversing with the person next to you vs. Driving and talking on a cell phone

Broadbent’s （ 1958 ） Filter Theory of Selective Attention

Message A

Message B

Message C

Message D

Selective Filter

Limited capacity decision channel

Long term

memory

B Responses

Emails

Chats

RSS Feeds

Text Messages？

Post Emails

"Top-Down" and "Bottom-Up"

• The filter can be directed by top-down or bottom-up influences.

• Top- down influences include a person's own intentions and expectations. – If I am trying to read a book, then my intention to read

will direct my attention to the words on the page, constituting a top-down influence.

• Bottom-up influences, by contrast, are directed by stimuli in the world that "catch" our attention. – If someone taps me on the shoulder while I'm

reading, the tap will direct my attention away from the book and toward that person, constituting a bottom-up influence.

Sensory Store in Channel Theory

Shadowing

1. Each of ear listens to a different message (dichotic presentation)

2. The listener is required to repeat the message that goes to one of the ears

Stroop effect

1. Selectively attending to the color and ignoring the word

2. Two processes interfere with each other

3. One is automatic

紅 藍 綠 黃 黑

紅 藍 綠 黃 黑

Paying attention• Consciousness:1. Internal stimuli: one’s state of mind2. External stimuli: features of environment3. Oneself: personal existence

• Attention:1. Enormous amount of information to our senses2. Limited amount that we perceive

• Application:

注意廣度實驗

實驗目的• 注意的廣度是注意的基本品質之一，指的是在一

瞬間人們能夠清楚地把握物件的數量。• 注意的廣度和記憶的廣度類似，都是一個閾限的

問題。• 影響注意廣度的因素有很多：如刺激呈現的時間、

注意物件的特點、主體的知識經驗、主體的練習等等。1 ．掌握測定視覺注意廣度的方法。2 ．測定個體的視覺注意廣度。

實驗儀器和材料 • 速示儀• 數形（圓點、數位、

圖形）卡片 24 張• 字母卡片 48 張

實驗程序1 ．測定數位圖形的注意廣度

（ 1 ）將速示器放在桌上，讓被試面對速示器坐下。調整儀 器的位置，與被試相距 25 釐米，並使呈現的卡片的中心與被試的視線等高。

（ 2 ）主試先把圓點卡片按隨機順序排好，在卡片後面注明序號與圓點數目，將刺激呈現時間置於 100 毫秒，然後將卡片放入速示器，告知被試注意看儀器的中心，在短暫的燈亮時間裏看清卡片上的黑點有多少個，然後報告給被試。主試發出“預備”口令後按動開關，燈亮 100 毫秒即行關閉。被試報告看到圓點數，主試依次記錄答案，但不要告訴被試是否正確。做完一組後把圓點卡片打亂順序 4 次重測，一共做 5 遍。做完之後，休息幾分鐘。

（ 3 ）用數位卡片按上述方法測試，並記錄結果（ 4 ）用圖形卡片按上述方法測試，並記錄結果。

實驗程序2 ．測定字母的注意廣度（ 1 ）主試分別使用分散和排列成行的字母卡片、顏

色相同與顏色不同的、大小相同與大小不同的字母卡片按上述方法測定，不同的是被試在觀察後，要把所看見的字母寫在紙上。做完 1 遍以後，再與原卡片核對，並記下“對”還是“錯”。

（ 2 ）主試記錄核對結果。

實驗結果及處理 • 畫圖或根據實驗結果用直線內插法求出 50

% 實驗次數被正確判斷的各類刺激數，即為被試對該類刺激的注意廣度。

問題與討論 1 ．比較圓點、數位與圖形的注意廣度是否

存在差別。若有差別，原因是什麼？ 2 ．比較分散的與排列成行的、顏色相同的

與顏色不同的、大小相同的與大小不同的字母的注意廣度是否存在差別。若有差別，原因是什麼？

3 ．比較不同的被試的注意廣度是否存在差異。

Implications of current research into attention process

• Internally: Biological nature of attention process

• Externally: Relationships between the individual and presenting tasks

Biological factors ofattention difficulties

• Appropriate pharmacological treatment increasing attention efficiency

• Unintended, unwanted side effects, such as liver damage

Intervention strategies contributing to academic success

• Family systems counseling _ behavioral modification _ attention disorders

• Individual counseling • (a) taking responsibility of one's disability• (b) developing skills to manage one's medication

schedule• (c) developing more effective study skills• (d) making persistent efforts to improve reading,

language, and math skills

Instruction that attract the attention of learners

• A blend of attention strategies – (a) the ability to focus attention– (b) the ability to sustain attention– (c) the ability to selectively attend to

instructional stimuli– (d) the ability to engage in academic tasks

requiring alternating attention– (e) the ability to engage in academic tasks

requiring divided attention

Internal and External treatment

• Pharmacological agents

• Benefits of such treatment should offset unwanted side effects

• Externalized intervention strategies may include specific interventions made by teacher, family, and learner

Working Memory

A common use of working memory

May be that it is your

working memory capacity

that best ‘measures’ your intelligence.

Key?

Critical on learning ！

1234567

• Working memory contains the information of which you are immediately aware. 

• Key ？Prerequisites ！

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• Are they seven chunk or a single chunk ？• Key ？

Cognitive strategies ！

Why are uniforms uniform? Because color helps us track objects

• Laboratory tests have revealed that humans can pay attention to only 3 objects at a time. Yet there are instances in the real world — for example, in watching a soccer match — when we certainly think we are paying attention to more than 3 objects. Are we wrong? No. A new study shows how we do it — it’s all in the color coding. People can focus on more than three items at a time if those items share a common color. But, logically enough, no more than 3 color sets.July issue of Psychological Science. 

People remember prices more easily if they have fewer syllables

• The phonological loop — an important component of working memory —can only hold 1.5 to 2 seconds of spoken information.

• Faster speakers have an advantage over slower speakers. • A consumer study reveals that every extra syllable in a product‘s pri

ce decreases its chances of being remembered by 20%. Thus, people who shorten the number of syllables  (e.g. 5,325, English vs. 中文 ) have better recall. However, since we store information both verbally and visually, it’s also the case that unusual looking prices, such as $8.88, are recalled better than typical looking prices.

September issue of the Journal of Consumer Research.Loading ： STM & WM ！

Cognitive strategies

• Central executive: Coordinates and manages the various tasks needed

• Containing several different components

Factors that affect W. Memory

– Food and supplements• Diet• Dietary supplements

– Biological rhythms • Sleep

– Emotion – Drugs & chemicals

• Hormone therapy • Alcohol • Ecstasy • Other illegal drugs • PCBs

– Clinical conditions • Multiple sclerosis • Head injury

– Development• Prenatal factors• Language• Maths learning• Face recognition• Attention

– Gender differences – Other

Research Results on Brain and Development ~August 2006

• August 2006– Exercise helps sustain mental activity as we age– Copper increases cognitive decline in older adults on high-fat diet– Novelty aids learning– Most of the cognitive deficits associated with alcoholism recoverable– Morbid obesity in toddlers linked to low IQ – Childhood sleep apnea linked to brain damage, lower IQ– Ingredient commonly found in shampoos may inhibit brain development– Drug erases long-term memory– Restoring flexibility to old brains– Genetic variations that may be key to the evolution of the human brain–  

• July 2006– Brain Imaging Identifies Best Memorization Strategies– Curry helps older brains– Vigorous exercise helps children's grades– Drug reverses aging effect on memory process– How multitasking impedes learning– Sleep makes memories resistant to interference– Support for labeling as an aid to memory– Avoiding predators may be the reason for our large brains– Bigger brains associated with domain-general intelligence

Adapted from Science Magazine

Cognitive Process

Message A

Message B

Message C

Message D

Selective Filter

Limited capacity decision Channel

Attention

Long term

memory

B Responses感覺 知覺

Senses are the physiological methods of perception.

STM & WM

Message A

Message B

Message C

Message D

Selective Filter

Limited capacity decision ChannelAttention

Long term

memory

B Responses

感覺 知覺

Senses are the physiological methods of perception.

STM & WM

感官刺激、淺層記憶、深層記憶與學習

內涵

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