The research tackles a stubborn puzzle in corruption control. Anti-corruption tools work best when employees report wrongdoing and refuse to condone it, because whistleblowers help uncover fraud, reduce financial losses, and restore organizational integrity. Yet decades of research have focused on individual predictors—personality, moral intelligence, fear of retaliation—while paying far less attention to how group membership quietly shapes these decisions. In collectivist societies, where loyalty to family, ethnic networks, and professional circles runs deep, the informal atmosphere of a work group may matter as much as any formal policy.

The theoretical engine behind the study is social identity theory, first articulated by Turner and colleagues in 1979. The theory holds that a person’s self-concept is shaped as much by internalized group affiliations as by personal traits. Previous experiments support its dark side for ethics: social ties foster altruism toward ingroup members and reduce punishment for their misbehavior, and ties increase favoritism in bribery experiments. Researchers have also described social spirals in which ingroup loyalty establishes norms supporting corrupt practices, pressures members to conform, and creates opportunities for misconduct to grow.

To test these ideas experimentally, Ogungbamila recruited 384 employees—227 women and 157 men with a mean age of 31.17 years—enrolled in weekend part-time programs at a Nigerian public university. Participants were randomly assigned to one of four groups, each reading a vignette about a major financial fraud their group uncovered during a routine review. All four versions contained identical core information: reporting the fraud would save the organization from bankruptcy, enable payment of ten months of owed salaries, keep many employees in work, and the organization explicitly encouraged reporting and provided legal and institutional protections. The only difference was a single sentence about the perpetrators’ social relationship to the group.

Group A received no information about social affiliation at all. Group B learned the perpetrators had no social ties to them. Group C learned the perpetrators were rivals of their group. Group D learned the perpetrators had strong social ties to them. Participants were instructed to vividly imagine themselves in the scenario and then complete two measures: the newly developed six-item Group Member Whistleblowing Intentions Scale, which assesses willingness to report corruption in line with perceived group expectations, and the 18-item group version of the Corruption Tolerance Inventory, which measures the tendency to condone wrongdoing committed by members of one’s social or occupational ingroup.

A preliminary manipulation check with 40 part-time employees foreshadowed the main results with striking clarity. When the perpetrators were portrayed as rivals, all ten participants—100 percent—said they would report the fraud. When the perpetrators had strong social ties to the group, nine of ten—90 percent—said they would not. With no social affiliation, 70 percent were ready to report, and with no information at all, opinion split evenly at 50 percent. A single relational cue, it seemed, could flip the ethical verdict.

The main study confirmed the pattern statistically. The type of social affiliation significantly affected both whistleblowing intentions, F(3, 380) = 24.19, p < 0.001, and corruption tolerance, F(3, 380) = 46.99, p < 0.001. Follow-up Tukey HSD tests showed that whistleblowing intentions were highest when perpetrators were rivals (M = 14.79), significantly exceeding every other condition. Intentions rose steadily with social distance from the perpetrators. Corruption tolerance showed the mirror image: participants with strong social ties to the fraudsters reported the highest tolerance (M = 52.67), far above the rival condition (M = 40.91), so tolerance increased with social closeness. Both hypotheses were supported.

The correlational data added demographic texture. Whistleblowing intentions declined as tacit support for corruption rose, r(382) = −0.38, p < 0.001, confirming the two constructs sit at opposite ends of the corruption spectrum. Older participants tended to condone corruption more, and women reported significantly higher intentions to blow the whistle than men, though gender made no difference in corruption tolerance. The author interprets the rivalry effect with caution: heightened reporting against outgroup perpetrators may reflect not only fairness motives but also strategic intent to disadvantage competing groups, a question future research must disentangle.

The theoretical implications reach beyond Nigeria. The study extends social identity theory by demonstrating that the same mechanisms promoting teamwork and solidarity can weaken anti-corruption efforts, encouraging differential treatment of wrongdoing depending on the perpetrator’s social identity. It also challenges the assumption that anti-corruption norms are applied uniformly across social actors—support for reporting appears to be a social identity process, not merely a moral one. Earlier cross-cultural work supports this: Indonesians in high-corruption-prevalence contexts were less permissive of corruption than Dutch participants, suggesting people condone wrongdoing when it serves ingroup interests rather than viewing it as the source of their socioeconomic problems.

For organizations, the practical message is sobering. Ethical behavior is governed not only by formal rules and sanctions but by informal social relationships, and employees may stay silent when perpetrators belong to valued networks regardless of the seriousness of the offense. The author recommends ethical training that helps employees recognize ingroup favoritism, confidential reporting channels and strong anti-retaliation protections to reduce the psychological costs of reporting, and diversity and inclusion policies that foster a superior organizational identity prioritizing shared values over group interests. Notably, the study warns against manufacturing intergroup rivalry as a whistleblowing strategy—rivalry-driven reports may not be ethically motivated and can encourage unscrupulous accusations. Because hypothetical vignettes capture intentions rather than real group decisions, and participants were part-time employees, the author urges field studies in natural organizational settings to clarify how loyalty, moral disengagement, and perceived threat operate when the fraudster is truly one of us.

Subject of Research: Friends in deed? How connections with corruption perpetrators shape whistleblowing intentions and corruption tolerance in group members

Article Title: Friends in deed? How connections with corruption perpetrators shape whistleblowing intentions and corruption tolerance in group members

Article References: Ogungbamila, B. (2026). Friends in deed? How connections with corruption perpetrators shape whistleblowing intentions and corruption tolerance in group members. Frontiers in Organizational Psychology, 4, Article 1848564. https://doi.org/10.3389/forgp.2026.1848564

Image Credits: AI Generated

DOI: 10.3389/forgp.2026.1848564

Keywords: Friends, deed, connections, corruption, perpetrators, shape, whistleblowing, intentions, tolerance, group, members, scientific research