PsychologyUnit 59 min read

Cognition: Thinking, Problem-Solving & Decision-Making

Unit 5 of Psychology explores how humans process information—attention, problem-solving, decision-making, language, and cognitive biases—linking theory to real-world tech and business applications like AI, eSewa, and Daraz.

TAKEAWAYS:

  • Cognition is the mental process of acquiring, storing, and using knowledge (perception, attention, memory, language, problem-solving).
  • Problem-solving uses algorithms (step-by-step) or heuristics (mental shortcuts), but biases (e.g., confirmation bias) can distort decisions.
  • Language is a cognitive tool: Chomsky’s theory explains innate grammar, while Whorf’s hypothesis links language to thought.
  • Decision-making is influenced by emotions (amygdala) and logic (prefrontal cortex), seen in Ncell’s tariff choices or Daraz’s discount psychology.
  • Cognitive biases (e.g., anchoring, availability) explain why users trust eSewa’s reviews or ignore NEPSE’s volatility.
  • AI mimics cognition: Chatbots use rule-based systems (like early GPS navigation) or machine learning (like YouTube’s recommendation engine).

What Is Cognition?

Cognition is the mental process of acquiring, storing, transforming, and using information. It includes:

  • Perception (interpreting sensory input)
  • Attention (focusing on relevant stimuli)
  • Memory (encoding, storing, retrieving)
  • Language (symbolic communication)
  • Problem-solving (finding solutions)
  • Decision-making (choosing actions)

Why it matters: Cognition shapes how we interact with technology (e.g., designing intuitive apps) and make life choices (e.g., investing in NEPSE).


1. Attention: Selecting What to Process

Attention is the cognitive filter that prioritizes information. Types:

  • Selective attention: Focusing on one task (e.g., ignoring traffic while driving in Kathmandu).
  • Divided attention: Multitasking (e.g., texting while walking—risky!).
  • Sustained attention: Long-term focus (e.g., studying for TU exams).

How it works: The cocktail party effect (Cherry, 1953) shows we filter irrelevant noise (e.g., hearing your name in a crowded room). The spotlight model (Posner) explains how attention shifts like a searchlight.

Long-Term Memory (stored knowledge)Focused → Working Memory (processing)Ignored → DiscardedAttention FilterSensory Memory (brief storage)Sensory Input (e.g., sounds, images)
Attention filtering process (cocktail party effect + spotlight model)

Real-world example:

  • Pathao drivers use selective attention to navigate traffic while tracking orders.
  • WhatsApp notifications use visual cues (vibrations, colors) to grab attention.

2. Problem-Solving: From Algorithms to Heuristics

Problem-solving is cognitive effort to reach a goal. Two main strategies:

Algorithm Heuristic
Step-by-step, guaranteed solution (e.g., math formulas) Mental shortcuts (faster but error-prone)
Example: GPS route calculation Example: "If it’s raining, take the bus"
Pros: Accurate, reliable Pros: Quick, energy-efficient
Cons: Time-consuming Cons: Biases, mistakes

Common heuristics (and biases):

  • Availability heuristic: Judging probability by ease of recall (e.g., fearing plane crashes after news coverage).
  • Representativeness heuristic: Stereotyping (e.g., assuming a quiet person is shy).
  • Anchoring: Relying too heavily on the first piece of information (e.g., Daraz’s "original price" vs. discount).

Worked example: A Daraz seller lists a phone for ₹50,000 but marks it as "₹60,000 (20% off)."

  • Anchoring bias: Buyers focus on ₹60,000, not the actual value.
  • Cognitive shortcut: They perceive ₹50,000 as a "great deal" without comparing other sites.

3. Decision-Making: Logic vs. Emotion

Decisions involve rational (prefrontal cortex) and emotional (amygdala) systems. Models:

  1. Dual-process theory (Kahneman):
    • System 1: Fast, automatic (e.g., recognizing a friend).
    • System 2: Slow, effortful (e.g., calculating loan interest).
  2. Prospect theory (Kahneman & Tversky): People prefer avoiding losses over gaining equivalent rewards (e.g., NEPSE investors panicking during drops).
017.53552.570Gains ($100)30Losses ($100)70
Prospect Theory: Losses loom larger than gains (Kahneman & Tversky)

Real-world ties:

  • Ncell tariff choices: Users weigh data limits (logic) vs. peer pressure (emotion).
  • eSewa payments: Fear of fraud (amygdala) vs. convenience (prefrontal cortex).
mindmap
  root((Decision-Making))
    Factors
      Logic["Prefrontal Cortex\n(Weighs pros/cons)"]
      Emotion["Amygdala\n(Fear, excitement)"]
    Biases
      Loss Aversion["Prefer avoiding losses\n(e.g., NEPSE sell-offs)"]
      Sunk Cost Fallacy["Continuing failed investments\n(e.g., Daraz seller holding stock)"]
    Models
      Dual-Process["System 1 vs. System 2"]
      Prospect Theory["Losses loom larger than gains"]

4. Language: The Cognitive Tool

Language is a symbolic system that shapes thought. Key theories:

  • Chomsky’s Universal Grammar: Humans are born with a "language acquisition device" (LAD) for grammar rules.
  • Whorf’s Linguistic Relativity: Language influences thought (e.g., multiple words for snow in Inuit languages affect perception).

Components of language:

  1. Phonemes: Smallest sound units (e.g., "b" vs. "p" in "bat" vs. "pat").
  2. Morphemes: Meaningful units (e.g., "un-" in "unhappy").
  3. Syntax: Rules for word order (e.g., Nepali SOV vs. English SVO).
  4. Semantics: Meaning of words/sentences.

Real-world example:

  • Google Translate uses algorithms to map phonemes/syntax but struggles with idioms (e.g., "kick the bucket").
  • Nepali vs. English: Nepali’s context-dependent grammar (e.g., verb endings for subject) reflects cultural communication styles.

5. Cognitive Biases in Tech and Business

Biases distort judgment. Examples in Nepal’s digital economy:

Bias Example Impact
Confirmation bias eSewa users trusting 5-star reviews Overestimating product quality
Anchoring Daraz’s "original price" displays Inflating perceived savings
Availability Fear of cybercrime after news Avoiding online banking
Framing effect "90% fat-free" vs. "10% fat" Influences food/drink choices

Worked example: NEPSE investors see a stock drop from ₹500 to ₹400.

  • Loss aversion: They panic-sell, worsening the drop.
  • Hindsight bias: Later, they claim they "knew it would crash."

In the Real World

  1. eSewa’s Trust System:

    • Uses social proof (reviews) and anchoring (showing "₹X saved") to reduce cognitive load in payments.
    • Why it works: Nepalis trust peer recommendations (availability heuristic) over cold data.
  2. Pathao’s Dynamic Pricing:

    • Adjusts fares based on supply/demand heuristics (like Uber).
    • Cognitive link: Riders accept higher prices during peak hours due to loss aversion (fear of missing the ride).
  3. Ncell’s Tariff Confusion:

    • Overlapping plans exploit choice overload (too many options paralyze decision-making).
    • Solution: Simplified menus use chunking (grouping similar plans) to reduce cognitive strain.
  4. YouTube’s Algorithm (Global):

    • Uses availability heuristic: Shows trending videos first, reinforcing what’s easily recalled.
    • Nepali example: Political news dominates feeds during election seasons.
  5. Khalti’s Security Warnings:

    • Uses framing: "Your money is safe" (positive) vs. "Hackers target weak passwords" (negative).
    • Psychology: Negative frames trigger stronger emotional responses (amygdala activation).

Exam Tip

  1. Define and differentiate:
    • Distinguish algorithms (e.g., GPS routes) vs. heuristics (e.g., "if it’s raining, take the bus").
    • Compare Chomsky’s LAD vs. Whorf’s linguistic relativity.
2050 BSCognitive LoadTheory (Sweller) - Sim2060 BSSocial Proof(Cialdini) - Trust-bui
Key principles behind exam-friendly design
  1. Apply to real scenarios:

    • Problem-solving: Explain how a Daraz seller uses heuristics to set prices.
    • Biases: Analyze why NEPSE investors make irrational decisions (loss aversion, hindsight bias).
    • Language: Relate Chomsky’s theory to how Google Translate fails with Nepali grammar.
  2. Diagrams are key:

    • Draw dual-process theory (System 1 vs. System 2) for decision-making.
    • Sketch attention models (spotlight, filter) for perception questions.
  3. Common pitfalls:

    • Don’t confuse memory (Unit 4) with cognition (this unit). Focus on processing, not storage.
    • Avoid vague answers like "people think differently." Specify how (e.g., "due to anchoring bias").
  4. Case study practice:

    • Question: "How does eSewa use cognitive principles to encourage payments?"
    • Answer:
      • Anchoring: Shows "₹X saved" to highlight discounts.
      • Social proof: Displays "10,000+ users trusted" to reduce risk perception.
      • Simplification: Limits steps in the payment flow to reduce cognitive load.

Visual Summary:

Based on the TU BIT syllabus for Psychology (PSY359), unit 5.

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