心理学A：復習

Main ideas / lessons (structured)

1) Purpose of review: use “keywords” and work from notes

• The instructor suggests reviewing course content by focusing on key terms rather than rereading everything.
• Students should have notebooks ready and listen while checking their notes.
• Missing parts can be added, clarified, and summarized.

2) Psychology: two branches and the definition of psychology

Everyday psychology

• Relies on subjective, non-scientific methods.

Academic (scientific) psychology

• Uses scientific methods to accumulate objective facts.
• Builds a reliable knowledge system.

Definition emphasized

• Psychology is an empirical science that studies not only humans but also large animals.
• It explains behavior and mental processes scientifically.
• In empirical psychology, intuition is not enough; claims must be scientifically verified.

3) Why verification matters: what verification can reveal

• Verification is necessary because psychology is applied across many fields.
• Instead of relying on intuition, use data and logical thinking to understand reality.

Two relationship types verification can reveal

• Correlation

  • Describes a relationship between two variables.
  • Types:
    • Positive correlation: as one variable increases, the other increases.
    • Negative correlation: as one variable increases, the other decreases.
    • No correlation: variables show no systematic relationship.
  • Key limitation: correlation does not prove causation.

• Causation

  • A relationship where changing the cause will inevitably change the effect.

4) Research methods: experiments vs. surveys

Experiments

• Conducted under strictly controlled conditions.
• The researcher changes conditions sequentially.
• Manipulate the causal variable (independent variable).
• Advantage: can establish causal relationships clearly.
• Drawback: manipulation can be artificial; ethical constraints may limit what can be tested.

Surveys

• Do not manipulate the causal variable.
• Advantage: research can be closer to real life because nothing is forced or controlled in the same way.
• Limitation: cannot directly discuss causal relationships.

Core variable terminology (explicitly stated)

• Independent variable: the causal variable (what is manipulated/considered as cause)
• Dependent variable: the outcome/result
• Extraneous (surplus) variables:
  • Anything other than the independent variable that affects the dependent variable
  • Should be controlled

---

5) Sensory psychology: five senses and how perception is organized

5.1 Senses as entry points to mind

• The five senses are described as the basis for knowing the outside world.
• “Senses are the windows to the mind.”
• Each sense is linked to specific functions:
  • Eyes: confirm existence of things
  • Ears: detect sound waves
  • Skin: detect pressure
  • Mouth: detects chemicals entering the mouth
  • Nose: detects airborne molecules
• Perception is tied to:
  • the sense
  • the corresponding sensory region
  • external stimuli
• Sensory modalities
  • The experiential “channels” unique to each sense (what you can experience via seeing/hearing/touching, etc.).

5.2 Gestalt principles: organizing the sensory input

• Learning about the outside world begins with raw “letters”/elements of objects, then forming meaningful patterns to see overall form.
• The mind tends to perceive the most orderly whole:
  • Law of Prägnanz
• Perceptual grouping / unity is described using Gestalt-related factors.

Gestalt grouping factors mentioned (with examples)

• Proximity factor (closeness)
  • Objects close together tend to be grouped.
• Similarity factor (same color / same kind)
  • Objects that are similar (including same color) group together.
• Closure / “good shape” factor (closed shapes)
  • Things that are “closed” tend to group together as a unit.
• Good continuity factor (good continuation)
  • Overlapping figures are perceived as continuous paths (e.g., smoother connections are grouped).
  • Example idea: when parts overlap, you perceive two lines—straight and curved—instead of a confusing combined shape.
• Common fate factor (moving together)
  • Elements moving in the same direction are perceived as belonging together.
• Experience factor
  • Grouping can depend on knowledge gained from past experience.
• The instructor attributes these ideas to Max Wertheimer and the Gestalt psychology tradition.

---

6) Perception and “illusions”: how 2D inputs become 3D experience

• An illusion is defined as a case where perceived external objects differ from their physical objective properties.
• The lecture focuses on perception illusions in general.

6.1 Vision as computation from retinal (2D) input to 3D experience

• The retina receives a 2D image, but perceived reality is 3D.
• The brain is described as calculating depth using multiple cues.

6.2 Neural/image projection detail (as described)

• Images are reversed left-right and up-down on the retina.
• The lecture describes cross-projection to opposite brain hemispheres (right-side projected to left hemisphere, etc.).

6.3 Depth cues mentioned

• Binocular cues / binocular lens adjustment
  • Binocular disparity / parallax: slight differences between left and right eye images are merged.
• Eye convergence
  • When looking close, eyes “cross.”
• Lens accommodation
  • Lens thickness changes for far vs. near viewing.
• Pictorial cues
  • Overlap
  • “Defining gradients” (shading/gradient cues)
• Knowledge/experience-based cues
  • Size improvements / improvement cues (used as depth information)

6.4 Multi-sensory perception

• In daily life, perception uses multiple senses:
  • hearing, smell, taste, touch (in addition to sight)
• Multisensory perception: knowing the outside world using multiple senses.

6.5 Examples of multisensory “dominance” phenomena

• Examples introduced:
  • “True effect” (subtitle unclear—likely a speech-visual influence effect)
  • Fukuwa effect
  • Double flash illusion
  • Kosaka repulsion
• Core idea: when multiple senses are available, one sense can become most dominant depending on conditions.

6.6 Modality Appropriateness Hypothesis (explicit)

• Each sensory modality influences perception depending on how appropriate it is for the task:
  • Sight: superior in spatial resolution
  • Hearing: superior in temporal resolution
• Therefore, when the task matches what a modality is good at, that modality becomes dominant.
• The lecture claims recent experiments support this hypothesis.

---

7) Attention: limits on information and selective processing

7.1 Why attention is needed

• There is a limit to the amount of information a person can process.
• Attention selects and processes information from a larger input.

7.2 Selective attention and the “cocktail party effect”

• Cocktail party effect: hearing a targeted voice in noisy surroundings.
• Cherry is identified as doing the first experiment on this.

Cherry’s method (concurrent separation method)

• Participants wore headphones presenting different sounds to the right and left ears.
• They were instructed to focus only on one side (e.g., right ear).

Findings

• Participants did not understand the content of the unattended side.
• They did not notice when unattended language changed (English → German).
• They did notice changes in the unattended speaker’s voice (male → female).

Conclusion

• Unattended information is processed at least at a physical level (e.g., voice quality),
• but not at the semantic (meaning) level.

Later results (modified view)

• If the listener’s own name appeared in unattended content, they noticed it.
• If left/right content was swapped, they no longer noticed it.
• Unattended semantic analysis can occur to some extent, depending on conditions.

7.3 When semantic-level analysis occurs

• More likely when:
  • you are familiar with the task or context
  • the task is easy and you can process information in parallel
• With experience, you may detect things not initially in focus.

7.4 Intentional blindness

• People often fail to notice change even when it occurs.
• Explained as inattention when attention is directed elsewhere.

7.5 Attention types: bottom-up vs. top-down

• Bottom-up attention
  • Triggered regardless of knowledge/expectation.
  • Example: someone suddenly stands and says “Wow!” → attention is captured.
• Top-down attention
  • Driven by knowledge and expectations.
  • Example: hearing your name → you attend because it matches stored knowledge.
• Missing changes can happen when neither system effectively guides attention.

---

8) Memory: stages, types, and strategies for improving recall

8.1 Stage model of memory (as stated)

Three-stage flow:

1. Encoding
2. Retention (holding/storing)
3. Remembering/recall (retrieval)

8.2 Memory types by duration

• Sensory memory: lasts only a few seconds
• Short-term memory (STM):
  • holds attended information
  • fades within ~30 seconds if not rehearsed
  • limited capacity
  • “Magic number 7 + 2”
• Long-term memory (LTM):
  • lasts almost indefinitely
  • no meaningful capacity limit stated

8.3 Memory types by content

• Semantic memory: general knowledge shared by many people
• Episodic memory: personal experiences/events
• Procedural memory: habits and action skills (e.g., physical actions)

8.4 Memory characteristics and strategies

• Strategies are emphasized because memory properties affect recall.

Strategies explicitly listed

• Series 1 effect (subtitle unclear; referenced as a case)
• Context-dependent effect
• Orthogonalization
• Organizationalization
• Generative effect

Detailed definitions of the main strategies

• Context-dependent effect
  • Retrieval improves when the retrieval context matches encoding context.
  • Example idea: learn/test in similar environments (quiet vs. noisy; similar surroundings).
• Orthogonalization
  • Add/remix information to create useful retrieval cues.
• Organizationalization
  • Group information into categories.
  • Includes chunking/grouping and the “magic number 7 + 2” reminder.
• Generative effect
  • Active processing: mentally group and write things down (not passive reading/listening).
  • Main point: being more active is more effective for memory.

---

9) Learning: associative learning, conditioning, and observational learning

9.1 Associative learning / conditioning overview

• Conditioning “basically works anytime.”
• Training is needed to acquire a response.
• If an acquired response is left alone, it disappears over time.
• Any response can be learned as long as biological constraints allow it.

9.2 Types of conditioning

• Classical conditioning
  • Associating stimuli to produce a response (respondent conditioning)
  • Pavlov is referenced (Pavlov’s dogs)
• Instrumental conditioning / Operant conditioning
  • Learning changes due to one’s own actions
  • The lecture notes a named person in the subtitle text as “Son, a carpenter,” but the intended attribution is likely Thorndike (given the operant conditioning tradition), though the subtitle text explicitly says “Son”.

---

10) Classical conditioning components and process (Pavlov example)

Key terms explicitly listed:

• neutral stimulus
• unconditioned stimulus
• unconditioned response
• conditioned stimulus
• conditioned response
• reinforcement
• extinction

Pavlov-style sequence (as described)

1. Neutral stimulus
   • Bell sound not initially linked to saliva.
2. Unconditioned stimulus (US)
   • Food triggers saliva naturally.
3. Unconditioned response (UR)
   • Saliva produced naturally when food is presented.
4. Conditioning
   • Bell is presented just before food repeatedly, linking bell to saliva.
5. After learning:
   • Bell becomes conditioned stimulus (CS)
   • Salivation to bell becomes conditioned response (CR)
6. Reinforcement
   • Present bell + food together to increase CR frequency.
7. Extinction
   • Present bell without food; CR gradually disappears.
8. Generalization
   • CR occurs to similar stimuli, not just the bell.
   • The subtitle text suggests an incorrect phrase (“the same as fluency”); the intended meaning is generalization across similar cues.

10.1 Learning difficult material: Shaping

• Shaping
  • Break learning into small steps.
  • Introduce easier parts gradually toward the final target behavior.
• The instructor references a personal/story example, but details aren’t clearly included.

10.2 Observational learning

• Observational learning: learning by watching and imitating others.
• The lecture notes some behaviors (e.g., violence) may be imitated easily, so observational learning can occur.

---

Sources / speakers featured (as mentioned)

• Instructor / lecturer (unnamed)
• Max Wertheimer (Gestalt psychology)
• Pavlov (classical conditioning)
• Cherry (cocktail party effect / selective attention)
• Thorndike is likely intended for operant conditioning origins, but the subtitle attribution text says “Son, a carpenter.”