Which bias is least likely to affect an appraisal of a single-unit residential dwelling?

• A. Anchoring bias
• B. Self-serving bias
• C. Groupthink
• D. Cultural bias

Answer: (B)

In appraising a single-family home, the value is driven by market data, comparable sales, and standardized adjustment methods. Anchoring bias can skew judgments when an initial value impression unduly steers subsequent adjustments. Groupthink can seep in when multiple reviewers favor a consensus and lose independent scrutiny. Cultural bias can color interpretation of neighborhood and property characteristics through a cultural lens, potentially distorting price signals. Self-serving bias, however, centers on how a person views their own abilities or outcomes, which matters less to the objective, data-driven process of selecting comps and applying market-based adjustments. Since the goal is a credible value grounded in market evidence rather than personal self-image or self-justification, self-serving bias is the least likely to affect a single-unit residential appraisal.