BEE2045 - 2025 - Lecture 6 - Discrimination - Part 4

Theories of Discrimination - Part 4

Introduction

• The lecture covers:

  • Discrimination dynamics

  • Anti-discrimination laws

  • Insights from theory and evidence

Discrimination Dynamics

• Theory as Basis:

  • Main reference: Bohren, Imas, and Rosenberg (2019) - "The Dynamics of Discrimination: Theory and Evidence"

  • Analysis of discrimination as a process rather than a static event.

Motivation for Dynamic Analysis

• Most traditional studies focus on static settings, limiting understanding of discrimination sources.

• Static settings can obscure the origins of observable patterns, as similar outcomes can arise from different sources.

Definitions of Discrimination Types

• Statistical Discrimination: Referred to as "belief-based" discrimination.

• Taste-Based Discrimination: Referred to as "preference-based" discrimination.

Key Model: Task Performance and Evaluation

• Individuals perform tasks repeatedly, generating outputs and observable histories of evaluations.

• Example: Workers on platforms like GitHub increase reputation based on evaluations received.

Initial Discrimination in Settings

• Initial evaluations may favor one group due to lack of prior performance history.

• E.g., female workers may not receive promotions despite similar quality of output compared to male counterparts.

Persistence of Discrimination

• Questions arise about whether initial discrimination mitigates, persist, or reverses over time.

Insights on Discrimination Types

• Taste-Based Discrimination: Future evaluations continue to affect women despite similar evaluation sequences to men.

• Statistical Discrimination: Involves biases related to perceived group statistics, affecting evaluations despite similar performance.

Impact of Prior Evaluations

1. Prior evaluations signal a worker's ability, which helps reduce ongoing discrimination.

2. If evaluators initially favor men, women may need to outperform men to gain equal evaluations in future periods.

3. Awareness of higher standards for women could lead to a reversal of discrimination in subsequent evaluations.

Biased Beliefs

• Discrimination based on incorrect beliefs can perpetuate inequality over time.

• Correct beliefs can mitigate discrimination but may not reverse it, highlighting the dynamics of biased beliefs in assessments.

Field Experiment Setup

• Conducted in an online forum (e.g., Stack Exchange) where users earn reputation points based on votes for questions and answers.

• Experimental Design: Gender of usernames varied among novice and advanced accounts to test discrimination dynamics without endogeneity issues.

Measuring Outcomes

• Evaluated quality of answers directly (correctness) versus the more subjective quality of questions.

Results of Experiment

1. For Answers: No significant evidence of gender discrimination.

2. For Questions: Significant initial discrimination observed against female novice accounts.

3. Statistical Discrimination: Notable difference in male versus female reputation change for questions posted, indicating an unequal advantage.

Change in Discrimination Dynamics

• Notable reversal of discrimination from novice to advanced account evaluations, confirming evidence of biased beliefs underlying initial discrimination.

Policy Implications

• Relying solely on examples of successful individuals from marginalized groups to argue against discrimination is flawed.

• Recognizing earlier discrimination stages may influence favorable treatment in later evaluations (e.g., accomplished women in STEM fields).

Additional Policy Considerations

• Incorrect beliefs about standards can perpetuate inequality despite qualifications.

• Policies to correct misconceptions regarding evaluation standards can help close gaps.

Comparison of Discrimination Laws

• UK Equality Act of 2010: Protects against discrimination in multiple dimensions including age, disability, race, and sex.

• ECHR: Enshrines rights against discrimination among member states, enforceable by international court.

Differences with US Laws

• US laws on discrimination are fragmented, resulting in variable protection across states and groups. Specific protections for sexual and gender minorities may differ significantly from those in the UK.

Example of Legal Interpretation

• A tribunal ruled that political views expressed by Fairbanks were not protected philosophical beliefs under the Equality Act, illustrating complexities in discrimination cases.

Conclusion

• Next topic: Identity Economics and further implications of discrimination dynamics in economics.