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Understanding Cognitive Bias

Sep 5, 2025

Overview

This lecture explains what bias is, its impact on judgment and research writing, and outlines common types of cognitive bias with examples.

Understanding Bias

  • Bias is an inclination for or against a person, thing, or idea without rational justification.
  • Judgments are not biased when based on informed reasoning, but biases are preferences that influence decisions unconsciously.
  • Bias influences how people interpret events, often aligning perceptions with personal preferences.

The Nature of Bias

  • Everyone has biases, which are natural but problematic when they prevent fair or rational decisions.
  • Implicit (unconscious) bias refers to hidden stereotypes that affect decisions without our awareness.
  • Implicit biases can be especially harmful in areas like healthcare, law enforcement, education, and public communication.

Bias in Research Writing

  • Bias can prevent objective analysis and rational argument development in research writing.
  • Preexisting attitudes can cause us to disagree with arguments based on the source rather than the content.
  • Cognitive biases can cloud judgment and hinder fair evaluation of information.

Types of Cognitive Bias

  • Confirmation Bias: Tendency to seek or interpret evidence that supports existing beliefs, ignoring contradictory information.
  • Availability Bias: Judging events as more important if they come quickly to mind, often due to memorable recent examples.
  • Recency Bias: Giving more weight to recent events or information over older but possibly more relevant data.
  • Framing Bias: Decisions are influenced by how information is presented; wording can affect perception and outcome.

Key Terms & Definitions

  • Bias β€” An inclination for or against something that is not based on reason or actual experience.
  • Implicit Bias β€” Unconscious attitudes or stereotypes affecting understanding, actions, and decisions.
  • Confirmation Bias β€” Seeking information that confirms one’s existing beliefs and ignoring opposing data.
  • Availability Bias β€” Overestimating the importance of information that is easily recalled.
  • Recency Bias β€” Prioritizing recent information over older, possibly more relevant data.
  • Framing Bias β€” Influence of presentation or wording on decision-making.

Action Items / Next Steps

  • Practice identifying bias in your own reasoning and in sources you encounter.
  • Reflect on how cognitive biases may affect your research and arguments.
  • Prepare to discuss examples of bias in upcoming class assignments.