Yes—two experiments described by KAIST researchers found that participants prompted to feel secure and valued in a group made more elaborated, persuasive arguments when they held a minority opinion than participants in a neutral condition. People judging those arguments later also found them more persuasive and were more willing to use minority views. The finding suggests that having permission to speak may not be enough: people may also need confidence that disagreement will not cost them their place in the group.
What does feeling secure in a group mean?
In this study, group attachment security means perceiving the group as a reliable source of support and feeling recognized as a valued member. It is not simply being allowed to speak. The proposed explanation is that someone who expects to remain accepted after disagreeing can spend less attention managing the risk of rejection and more attention explaining the substance of an argument.
The study, “The role of group attachment security in minority opinion expression in decision making groups,” was published online in Scientific Reports on August 4, 2026. KAIST announced the findings on September 27, 2026. The research team included KAIST professors Sujin Lee and Seungwon Jeong and Zoe Kinias of Western University’s Ivey Business School; doctoral candidate Tae Hyun Kim was first author. KAIST’s announcement distributed by EurekAlert!
What did the two experiments find?
Minority members made more developed arguments
In the first experiment, participants in a hypothetical group decision-making scenario were assigned either to a group-attachment-security condition or a neutral condition. Participants holding a minority view in the security condition produced arguments described as more elaborated and persuasive. The researchers attributed this to greater focus on the problem and the content of the opinion.
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Majority members responded more favorably to those arguments
In the second experiment, participants considered arguments from the first experiment from the perspective of a majority-group member. They rated arguments produced in the security condition as more persuasive, reported less expectancy violation, and expressed greater willingness to use minority opinions.
These are findings from hypothetical decision tasks. The accessible KAIST announcement does not report sample sizes, effect sizes, confidence intervals, or exact test statistics, so it does not establish how large the effects were or how often they would occur in real groups.
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Does the effect depend on whether the dissenter is an insider?
The announcement says most interactions between attachment security and ingroup or outgroup membership were not statistically significant. Expectancy violation in the second experiment was the stated exception. The researchers also describe a consistent pattern for ingroup minorities in exploratory analyses, but that pattern should not be treated as a confirmed general interaction. The evidence therefore does not support a broad claim that security reliably helps insiders more—or outsiders less—than other group members.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What can groups do with this finding?
The researchers suggest that leaders can invite counterarguments, recognize minority contributions, and reassure members that disagreement will not damage their standing. These are practical implications, not interventions tested in the reported experiments. The study supports taking the social cost of dissent seriously, but it does not show that any particular leadership technique will produce better decisions.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallIn a meeting, that distinction matters: a formal invitation to speak may coexist with signals that dissent is unwelcome. A group seeking candid input can make room for disagreement and show, through its responses, that contributors remain valued after they offer it.
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What the study does—and does not—show
- It suggests: perceived acceptance may help minority members explain their views more fully, while making those views easier for majority members to consider.
- It does not establish: the size or real-world frequency of the effect, whether a specific workplace practice will cause it, or a robust difference between ingroup and outgroup dissenters.
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