31 lines
7.1 KiB
Markdown
31 lines
7.1 KiB
Markdown
---
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title: "Anchoring effect"
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chunk: 4/6
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source: "https://en.wikipedia.org/wiki/Anchoring_effect"
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category: "reference"
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tags: "science, encyclopedia"
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date_saved: "2026-05-05T09:57:19.378582+00:00"
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instance: "kb-cron"
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---
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=== Attitude change ===
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On the contrary of the two previous theories, the attitude change view suggests that individuals' attitude towards an anchor, specifically provided anchors, can heavily affect the extent of the anchoring effect. Recall that individuals often seek to confirm their hypothesis rather than objectively evaluating all information. When individuals disagree with the provided anchor, they will selectively seek evidence that supports their own attitudes instead of the provided anchor, resulting in an unobserved anchoring effect. This theory highlights the idea that the distinct anchoring effect observed with self-generated and provided anchors roots from individual attitude (i.e., does the individual believe in the anchor) rather than the anchors themselves, supporting the integrative theory proposed by Simmons and colleagues. Furthermore, supporters of this view have argued that attitude change is an alternative explanation of the anchoring effect. Providing an anchor generates favorable attitudes in individuals toward the anchor, biasing consequent judgments.
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=== Extremeness aversion ===
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Extremeness aversion is a robust phenomenon where people try to avoid the extremes during decision-making, such as selecting the middle options more often than other extreme options and avoiding reporting the maximum or minimum on a Likert scale. This desire to avoid extremes is at least partially responsible for the anchoring effect. For instance, upon setting an anchor, participants who were told they could adjust up to 6 units made significantly smaller adjustments compared to those who were told that they could adjust up to 15 units, suggesting that people avoid extremes when making decisions. Importantly, the maximum allowable adjustment acted as an anchor that affected the final judgment, highlighting the prevalent aversion to extremes. As a result, the final judgment is close to the anchor because people do not want to adjust too close to the extremes.
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=== Neuroscience basis ===
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Some research has explored neural mechanisms underlying the anchoring effect. Studies of individual differences report that mixed-handed individuals show larger anchoring effects than strongly handed individuals, a pattern consistent with differences in interhemispheric interaction. Electrophysiological work provides additional evidence: EEG studies suggest that externally presented anchors function as semantic primes that shape the cognitive and affective context in which judgments are formed. Higher anchors are associated with increased P2 and late positive potential (LPP) amplitudes, indicating greater anticipatory attention and expectations of stronger or more aversive outcomes. Research using EEG and fMRI in management-related judgment tasks further shows that anchor values engage distinct semantic and evaluative networks. Higher anchors produce stronger EEG power in value-judgment stages, and fMRI experiments reveal different reaction-time profiles and neural activation patterns for feasible, infeasible, and no-anchor conditions during both comparison and decision phases.
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== Influencing factors ==
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=== Cognitive ability ===
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The impact of cognitive ability on anchoring is contested. Predrag Teovanović's investigated whether intelligence, cognitive reflection and personality traits affects the presence of anchoring effect in decision-making. Although measures of individual differences in susceptibility to anchoring were reliable, individual differences only explain a small portion of the variation. However, intelligence is negatively correlated with anchoring for participants who are more reflective. By critically thinking about their process of decision-making, reflective individuals might realize the unreasonable reliance on anchors and insufficient adjustments. Similarly, Welsh and colleagues found a weak, negative correlation between aptitude for rationality and overall cognitive measures and anchoring susceptibility. A study on willingness to pay for consumer goods found that anchoring decreased in those with greater cognitive ability, though it did not disappear. Research supporting individual differences in anchoring suggests that individuals who recognize the potential bias of anchoring and actively reflect on their decision-making process tend to be less susceptible to its effects. By critically assessing whether their judgments are based on reliable data or influenced by arbitrary anchors, they are more likely to identify and correct for insufficient adjustments, or choose not to use unreliable anchors at all.
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Another study, however, found that cognitive ability had no significant effect on how likely people were to use anchoring. In a poker-like experiment that included people of differing academic achievement and psychometric reasoning scoring, it has been found that anchoring is not related to education level. It also found that numerical reasoning and reflection scores had a negative association with anchoring susceptibility.
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=== Overconfidence ===
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Overconfidence is significantly associated with the anchoring effect. It refers specifically to the tendency for individuals to place excessive weight on their initial estimates and insufficient weight on new information leading to cognitive conceit. Cognitive conceit or overconfidence arises from other factors like personal cognitive attributes such as knowledge and decision-making ability, decreasing the probability to pursue external sources of confirmation. This factor has also been shown to arise with tasks with greater difficulty. Even within subject matter experts, they were also prey to such behaviour of overconfidence and should more so, actively reduce such behaviour. Following the study of estimations under uncertain, despite several attempts to curb overconfidence proving unsuccessful, Tversky and Kahneman suggest an effective solution to overconfidence is for subjects to explicitly establish anchors to help reduce overconfidence in their estimates.
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=== Personality ===
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Correlational research on anchoring bias and personality traits yielded mixed results, with emphasis on the Big Five personality traits which includes: Conscientiousness (orderly and responsible), neuroticism (uneasy and anxious), extraversion (sociable and outgoing), openness (intelligence and creativity) and agreeableness (polite and trusting). One study found that participants who were high in the Openness trait were more influenced by anchors set by others when estimating the length of the Mississippi river, with no other personality traits correlating to the effects of anchoring. Other research showed that it was conscientiousness and agreeableness that increased anchoring biases, while anchoring effects were diminished in participants high in the extraversion trait. Nonetheless, when measuring the Big Five personality traits and anchoring susceptibility, no significant correlation was found between personality and anchoring. The anchoring effect seems to be present regardless of personality. |