Free Printable WorksheetSocial StudiesGrade 12Social Studies Curriculum12.7

12.7 Sunk Costs, Behavioral Biases, and Decision Errors Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Economics & Financial Literacy Social Studies worksheet provides structured practice on 12.7 Sunk Costs, Behavioral Biases, and Decision Errors. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Sunk Costs, Behavioral Biases, and Decision Errors: Choose the statement that correctly identifies a sunk cost, relevant cost, or behavioral bias in a decision. Aligned to Integrated Grade 12 Economics & Financial Literacy Framework (C3, CEE, NSPFE, CCSS RH/WHST 11-12, AP Micro/Macro, NAEP, and selected state frameworks) 12.7 - Sunk Costs, Behavioral Biases, and Decision Errors: Choose the statement that correctly identifies a sunk cost, relevant cost, or behavioral bias in a decision. (C3 D2.Eco.1-2.9-12; CEE Econ 2, 4; NSPFE: Spending/Saving; CCSS RH.11-12.8; NAEP Econ: Individual/Household Context; FL SS.912.FL; VA EPF.)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Economics & Financial Literacy

Subject

Social Studies

Domain

Social Studies Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 12.7 Sunk Costs, Behavioral Biases, and Decision Errors skill assessments:

Problem 1Difficulty: Mastery

A city spent $2 million planning a stadium renovation. Updated forecasts show finishing would cost $30 million and produce benefits worth about $18 million. Supporters say the city has "come too far to stop." Which statement best identifies the decision error and relevant evidence?

AThe $30 million future cost is sunk because planning has already occurred.

BThe city should finish because the $2 million must be recovered through construction.

CThe $18 million benefit estimate is irrelevant because it is not a past payment.

DThe $2 million is sunk, and the $30 million future cost compared with $18 million in future benefits is the relevant evidence.

Solution & Explanation:The phrase 'come too far to stop' signals sunk cost reasoning. The decision should focus on future costs and benefits.

Problem 2Difficulty: Mastery

A project team uses a pre-mortem, asking, "Suppose this plan failed; what did we miss?" Which decision error is this tool mainly meant to reduce?

ASunk cost fallacy

BHerd behavior

COverconfidence

DMental accounting

Solution & Explanation:A pre-mortem pushes the team to imagine failure and consider overlooked risks, which helps reduce overconfidence.

Problem 3Difficulty: Mastery

Use the accompanying membership timeline. Which statement correctly classifies the amounts when deciding whether to cancel today?

AFuture monthly dues are sunk because membership has already started.

BThe initiation fee is relevant because it was larger than a monthly due.

CThe initiation fee is sunk; future monthly dues and any cancellation fee are relevant.

DThe cancellation fee is irrelevant because it appears only if cancelling.

Solution & Explanation:Past initiation fees cannot be recovered. Future dues and cancellation fees differ across choices, so they are relevant.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Economics & Financial Literacy Social Studies students. It aligns with educational standard 12.7 (Choose the statement that correctly identifies a sunk cost, relevant cost, or behavioral bias in a decision. (C3 D2.Eco.1-2.9-12; CEE Econ 2, 4; NSPFE: Spending/Saving; CCSS RH.11-12.8; NAEP Econ: Individual/Household Context; FL SS.912.FL; VA EPF.)).