The Interval Anchoring Effect
Abstract
Abstract. The anchoring effect refers to a decision bias that initial irrelevant information can influence late judgment. So far, most (if not all) studies on the anchoring effect adopted only point anchors (e.g., “Do you want to buy a computer with a price higher or lower than $1,000?”). In reality, people also use interval anchors (e.g., “Do you want to buy a computer with a price within $800–1,200?”). Can interval anchors also produce anchoring effect? Which kind of anchors have stronger anchoring effect? To answer these questions, we conducted four experiments involving quite different content. In each experiment, we found extremely significant anchoring effects for point anchors and interval anchors, respectively, but no significant difference between them. The results suggest that rarely researched interval anchors can be as powerful as intensively investigated point anchors and thus deserve more research and applications henceforth.
References
(2003). “Coherent arbitrariness”: Stable demand curves without stable preferences. Quarterly Journal of Economics, 118(1), 73–106. 10.1162/00335530360535153
(1999). Anchoring, activation, and the construction of values. Organizational Behavior and Human Decision Processes, 79(2), 115–153. 10.1006/obhd.1999.2841
(2006). Playing dice with criminal sentences: The influence of irrelevant anchors on experts' judicial decision making. Personality and Social Psychology Bulletin, 32(2), 188–200. 10.1177/0146167205282152
(2005). The last word in court – A hidden disadvantage for the defense. Law and Human Behavior, 29(6), 705–722. 10.1007/s10979-005-8380-7
(2009). Moody experts – How mood and expertise influence judgmental anchoring. Judgment and Decision Making, 4(1), 41–50.
(2001). Putting adjustment back in the anchoring and adjustment heuristic: Differential processing of self-generated and experimenter-provided anchors. Psychological Science, 12(5), 391–396. 10.1111/1467-9280.00372
(2001). First offers as anchors: The role of perspective-taking and negotiator focus. Journal of Personality and Social Psychology, 81(4), 657–669. 10.1037/0022-3514.81.4.657
(1998). Referendum contingent valuation, anchoring, and willingness to pay for public goods. Resource and Energy Economics, 20(2), 85–116. 10.1016/s0928-7655(97)00031-6
(1995). Measures of anchoring in estimation tasks. Personality and Social Psychology Bulletin, 21(11), 1161–1166. 10.1177/01461672952111004
(2007). Susceptibility to anchoring effects: How openness-to-experience influences responses to anchoring cues. Judgment and Decision Making Journal, 2(1), 48–53.
(2001). Considering the impossible: Explaining the effects of implausible anchors. Social Cognition, 19(2), 145–160. 10.1521/soco.19.2.145.20705
(1999). Hypothesis-consistent testing and semantic priming in the anchoring paradigm: A selective accessibility model. Journal of Experimental Social Psychology, 35(2), 136–164. 10.1006/jesp.1998.1364
(1989). Thinking the unthinkable: The effects of anchoring on likelihood estimates of nuclear war. Journal of Applied Social Pyschology, 19(1), 67–91. 10.1111/j.1559-1816.1989.tb01221.x
(2004). Anchoring effects on consumers' willingness‐to‐pay and willingness‐to‐accept. Journal of Consumer Research, 31(3), 681–690. 10.1086/425103
(2009). The cost of anchoring on credit-card minimum repayments. Psychological Science, 20(1), 39–41. 10.1111/j.1467-9280.2008.02255.x
(1997). Explaining the enigmatic anchoring effect: Mechanisms of selective accessibility. Journal of Personality and Social Psychology, 73(3), 437–446. 10.1037/0022-3514.73.3.437
(2019). Individual differences in anchoring effect: Evidence for the role of insufficient adjustment. Europe's Journal of Psychology, 15(1), 8–24. 10.5964/ejop.v15i1.1691
(1974). Judgment under uncertainty: Heuristics and biases. Science, 185(4157), 1124–1131. 10.1126/science.185.4157.1124
(1998). An anchoring and adjustment model of purchase quantity decisions. Journal of Marketing Research, 35(1), 71–81. 10.2307/315193
(2001). Implications of attitude change theories for numerical anchoring: Anchor plausibility and the limits of anchor effectiveness. Journal of Experimental Social Psychology, 37(1), 62–69. 10.1006/jesp.2000.1431
(2021). Raw data for “The interval anchoring effect”. https://osf.io/XSPQN/
