Notes on Assimilation, Accommodation, and Decision-Making Fallacies

Schema Theory: Assimilation and Accommodation

• Core idea: Our minds organize knowledge into schemas (categories or frameworks). When we encounter new information, we either fit it into an existing schema (assimilation) or adjust the schema to fit the new information (accommodation).
• Assimilation: Incorporate new information into an existing schema without changing the schema itself.
  • Example from transcript: You have a schema for a dog (traditionally, four legs). If you meet a three-legged dog, you still classify it as a dog by assimilating the new information into the existing dog schema (you haven’t rejected the idea that dogs can have four legs in the abstract; you’re just expanding the example).
  • Formal intuition: You add compatible details to the current framework.
• Accommodation: Modify an existing schema or create a new one to fit new information.
  • Example from transcript: Encountering a dog with three legs prompts you to modify your dog schema or create a sub-schema (e.g., dogs can have three legs). Similarly, meeting a gross hairless cat leads you to adjust your cat schema to include non-furry cats.
  • Practical point: As you grow, you learn that schemas are not fixed; you can change them as you receive new information.
• Early development context: Assimilation and accommodation are emphasized as foundational processes in learning, especially in infancy and childhood, but they continue to operate across life as we learn.
• General rule: Both processes help us adapt, but accommodation is invoked when the new information cannot be neatly folded into the existing schema.
• Instructional tip from transcript: When writing notes, draw an arrow back to the concept of a schema to show how the information references schemas.
• Printed vs online materials: There are references to differences between online and printed versions (e.g., a moose box appearing online but not in print).
• Other teaching notes:
  • There are “confusing pairs” to study, including assimilation vs accommodation.
  • You may see additional confusing pairs and new vocabulary beyond the textbook; mark these with stars to review their differences.

Confusing Pairs and New Vocabulary (Memory and Decision-Making)

• The material highlights two kinds of confusing pairs related to learning and memory, plus other “confusing pairs” that appear as you learn.
• Instructional cue: Put a little star next to assimilation vs accommodation and ensure you understand the difference.
• There are new vocabulary terms introduced that are not in the textbook; these require special attention to avoid mixing them up with existing terms.
• The star-marked items are meant to be understood as pairs that are easy to confuse without careful study.

Gambler's Fallacy

• Definition: The fallacy of letting past events influence future decisions under the mistaken belief that past outcomes will change the odds in the near term.
  • Framing: It is a fallacy (hence the term) because the past outcomes do not alter the true odds.
  • Core idea: False belief that a long run of bad luck will be “made up” by a streak of good luck, or that a favorable outcome is due.
• Why it matters: It creates obstacles to rational decision-making by tying decisions to prior results rather than objective probabilities.
• Examples from transcript:
  • Slot machine scenario: After paying 25¢ and pulling the lever many times without a payoff, a person thinks the next pull must pay off.
  • Poker or other gambling contexts: A person believes that not winning for a while implies that a win is imminent, so they keep playing.
• Conceptual takeaway: Past losses or outcomes are not predictive of future independent trials; each event is subject to independent odds.

Sunk Cost Fallacy

• Definition: The tendency to continue an action because of resources already invested (money, time, effort), even when continuing is not the best decision.
  • Framing: The fallacy is in making future decisions based on sunk costs rather than on current and future benefits.
  • Note: The term “fallacy” is included because the logic is flawed when past investments are allowed to dictate current choices.
• What counts as a sunk cost: Money, time, or effort already spent.
• Distinction from gambler's fallacy: Sunk cost is about the cost already incurred and the pressure to “recoup” it; gambler's fallacy is about believing odds will balance out after a streak of outcomes.
• Examples from transcript:
  • Entrepreneurial example: An entrepreneur spends money on a product idea (loans, marketing, manufacturing) for six months and is losing money; the decision to keep the venture going is influenced by the large prior investment rather than the current profitability outlook.
  • Sports or school: You have studied a lot for a test; you feel compelled to take the test despite not feeling ready because of the study time already invested.
  • Homecoming dance planning: Money and time have already been spent on plans; despite doubts, you push to continue rather than cancel.
• Important practical note: Sunk costs can be financial, temporal, or effort-based; the key is that the prior investment should not determine whether to continue if it is no longer beneficial.
• Relationship to decision-making: Recognizing sunk costs helps improve rational decision-making and reduces commitment to failing projects solely to justify earlier investments.

Distinctions, Connections, and Practical Implications

• Key distinction:
  • Gambler's fallacy: Past outcomes influence expectations about future results in probabilistic events; focus on odds and independence of trials.
  • Sunk cost fallacy: Future decisions are inappropriately influenced by resources already spent; focus on current and future costs/benefits.
• Real-world relevance:
  • Bias-aware decision making in finance, business, education, and personal choices.
  • Understanding these fallacies helps avoid stubborn commitments to unproductive ventures and improves evidence-based planning.
• Ethical/philosophical/practical implications:
  • Bias mitigation: Recognizing cognitive traps can guide more rational analysis and ethical decision making in contexts like business strategy, public policy, and personal life.
  • Cognitive development context: These concepts complement schema theory by showing how cognitive biases can interact with learning processes (assimilation/accommodation) in shaping how we update beliefs and strategies.

Quick Review Prompts and Activity

• Prompt to connect learning concepts:
  • Recall how assimilation and accommodation operate with the dog and cat examples. How would you handle new animal categories that do not fit existing schemas?
  • How do confusions between memory vocabulary pairs affect your ability to study or reason about psychology concepts?
• Activity from transcript:
  • On your paper, draw a circle.
  • (Use this as a reflective exercise to symbolize an ongoing process of organizing knowledge and revising schemas.)

Real-World Relevance and Takeaways

• Schema flexibility is a key part of learning: You should be prepared to modify your mental models in light of new evidence rather than clinging to outdated generalizations.
• Be mindful of cognitive biases in decision making: Recognize when past costs or past outcomes are unduly influencing your choices.
• Apply the concepts across domains:
  • Everyday judgments about animals and classifications (schema updates).
  • Business, sports, and academics where sunk costs or gambler's fallacy might skew strategy.

References to Course Structure (Notes for Your Study)

• If you notice a box on a slide labeled with questions, the instruction is to cross out the word “questions” and write notes instead.
• The online version may include items (e.g., a moose box) that are not present in the printed version; note such discrepancies when studying.
• When you encounter new vocabulary or confusing pairs, mark them with a star and review their distinctions carefully.