Across the world, women are entering science, technology, engineering, and mathematics in greater numbers than ever before. Yet despite their growing presence, many still encounter an invisible barrier that slows their progress: the confidence gap women face in STEM.
The confidence gap describes the tendency for women, even when equally or more competent than their male peers, to underestimate their own abilities. This persistent self-doubt influences whether women speak up in meetings, apply for promotions, submit research for publication, or pursue leadership roles. The gap is not rooted in capability. Women in STEM consistently perform at the highest levels. Instead, the problem lies in cultural expectations, workplace bias, and internalised patterns that undermine self-belief. Left unaddressed, the confidence gap perpetuates inequality and slows the pace of innovation.
This article explores what the confidence gap looks like, why it continues to affect women in STEM, and how both individuals and organisations can work together to close it.
Understanding the Confidence Gap in Women
The confidence gap is more than a fleeting sense of nervousness before a presentation. It is a structural pattern backed by research. Studies consistently show that women undervalue their expertise compared to men, even when their skills and qualifications are the same. When women gain insight into systemic bias and view it as a changeable challenge rather than a fixed barrier, this heightened awareness can help them question self-restricting beliefs and become more willing to act. In one controlled intervention, participants exposed to a workshop framing gender bias as a modifiable habit demonstrated increased awareness of their own bias, stronger internal motivation to promote equity, and greater confidence in their capacity to influence change, even after several months.
These findings show that the confidence gap is not about ability but about perception. When women consistently underestimate their knowledge and skills, it creates a cycle where fewer opportunities are pursued, which in turn reinforces the feeling of being less capable.
How the Confidence Gap Shapes Women’s Careers
For women in STEM, the confidence gap can have wide-ranging effects. In meetings, many hesitate to contribute unless they are absolutely certain of being correct, while male colleagues often feel comfortable sharing speculative ideas. When it comes to career progression, women frequently delay applying for promotions until they feel over-prepared, whereas men are more likely to progress with less preparation. Research funding presents another challenge, as grant applications require significant self-promotion. Women who struggle with confidence may avoid applying, missing out on crucial career-defining opportunities. Even in networking settings, many women decline invitations to panels or public speaking engagements if they fear they are not “expert enough,” which reduces their visibility and professional profile.
These behaviours, though understandable, accumulate over time. They lead to fewer women in senior positions, fewer female-led research projects, and a lack of diversity in leadership roles across science and technology.
Intersections with Other Barriers
The confidence gap does not exist on its own. It often overlaps with other barriers that reinforce one another. Impostor Syndrome in Women in STEM is one example. When women attribute their success to luck or external factors, they reinforce self-doubt rather than affirm their skills. Perfectionism is another, especially among women scientists who believe they must perform flawlessly before acting. The perfectionism women scientists face delays decision-making and makes it harder to take risks. Fear of failure also plays a role. If every mistake is interpreted as proof of inadequacy, rather than a learning experience, confidence diminishes. Our dedicated page on failure in women in STEM explores this issue in more depth.
Taken together, impostor syndrome, perfectionism, and fear of failure reinforce the confidence gap and make it even harder to overcome.
Why the Confidence Gap Persists
There are several reasons why the confidence gap remains such a stubborn problem. One is cultural stereotypes. From an early age, girls are often encouraged to be cautious and modest, while boys are praised for boldness and risk-taking. These subtle cues accumulate and shape how women perceive both competence and confidence. Another factor is bias in the workplace. Women’s contributions are often interrupted, overlooked, or credited to male colleagues. Over time, this reinforces the perception that speaking up is risky. Lack of representation is also important. When conference panels or leadership teams remain dominated by men, women find it harder to picture themselves in such roles. Structural barriers play a role as well. Unequal caregiving responsibilities, rigid workplace policies, and limited support for work-life balance all make it more difficult for women to participate fully in career-defining opportunities.
Together these forces explain why the confidence gap persists even in the face of growing awareness.
The Cost of the Confidence Gap
The confidence gap is not just a personal challenge. It has tangible consequences for institutions, industries, and society. When women step back from opportunities, STEM loses innovators and leaders whose contributions could advance research and technology. Homogeneous leadership teams tend to solve problems less effectively than diverse ones, so the lack of women in senior roles reduces creativity and innovation. At a global level, UNESCO stresses that closing gender gaps in STEM is essential for sustainable development and long-term competitiveness. The organisation argues that when half the world’s talent remains underrepresented in science and innovation, entire nations lose potential problem-solving capacity and creative leadership. Failing to confront the confidence gap means risking the departure of talented women to fields or countries that take equity more seriously, thereby weakening diversity in innovation and slowing progress toward inclusive growth.
How Women Can Challenge the Confidence Gap
Although systemic change is essential, there are strategies women can use to begin challenging the confidence gap in their own careers. One of the most powerful is reframing. As the American Psychological Association recommends, success should be seen as confirmation of ability and effort, while setbacks should be seen as learning opportunities. Another approach is building supportive networks. Membership in organisations such as the Women in STEM Network provides connection, mentoring, and collective encouragement. These networks validate expertise, create space for sharing experiences, and help women reclaim confidence. Visibility is equally important. Speaking up in meetings, sharing accomplishments, and volunteering for leadership tasks gradually build confidence and authority. Finally, mentorship and sponsorship play a critical role. Mentors provide guidance, while sponsors actively advocate for opportunities. Together they help women move beyond self-doubt into positions where their skills are recognised.
Organisational Responsibility in Closing the Confidence Gap
The confidence gap cannot be solved by women alone. Organisations must take responsibility for creating environments where confidence is fairly recognised and rewarded. Leadership training can help managers identify bias, encourage equal participation in meetings, and value contributions on merit rather than style of delivery. Transparent promotion processes are also essential, since they prevent advancement from depending solely on self-nomination. Recognising and celebrating achievements openly normalises women’s authority and helps confidence to grow. Structured mentoring programmes, especially those that connect women at different stages of their careers, provide role models and roadmaps for success.
Case Studies and Evidence
Examples from academia, industry, and entrepreneurship illustrate the significant role confidence—or the lack of it—plays in outcomes. In academic settings, women with publication records equivalent to their male peers often receive fewer invitations to give keynote talks or present high-visibility lectures, in part because women tend to shy away from self-promotion. For example, Exley and Kessler’s research demonstrates that women systematically understate their achievements relative to men, even when objective performance is comparable. Studies of scholarly self-promotion on social media reinforce this, showing women are about 28 % less likely to publicise their work on platforms like Twitter, which can reduce visibility and recognition.
In corporate STEM roles, organisations that invest in formal mentorship and sponsorship programmes tend to retain more women in senior positions and mitigate effects of self-doubt. Evidence suggests that mentoring and sponsorship are critical for women’s career advancement, and companies with strong programmes report better outcomes in leadership diversity.
In the entrepreneurial arena, female founders frequently undervalue their ventures and face steeper funding obstacles—even when their business fundamentals are strong. A significant study revealed that after a failure, women founders are 30 % less likely to secure funding and receive around 53 % less capital than male counterparts in equivalent circumstances. Yale’s research further shows that women with comparable entrepreneurial histories are less likely to get VC backing, in part due to bias around failure. Moreover, an analysis in Harvard Business Review highlights how women entrepreneurs across three decades consistently face higher rejection rates and lower funding amounts after accounting for experience, business type, and other factors.
Moving from Awareness to Action
Awareness of the confidence gap is only the starting point. Change requires coordinated action. Women can reframe experiences, build supportive networks, and practice visibility. Organisations can dismantle barriers, address bias, and implement clear advancement criteria. At the societal level, challenging stereotypes and celebrating diverse role models helps shift the culture that underpins the confidence gap.
Conclusion
The confidence gap women face in STEM is real but not inevitable. With conscious effort from individuals and organisations, it is possible to dismantle the barriers that hold women back. Women can learn to reframe self-doubt, seek out networks and mentors, and step into visibility. Institutions can address bias, implement fairer policies, and celebrate achievements more openly. The Women in STEM Network is committed to this mission by connecting women across disciplines, offering mentoring opportunities, and advocating for systemic change. Together, we can ensure that women do more than simply enter STEM. They can thrive in it, confident in their rightful place as leaders, innovators, and change-makers.
The Women in Stem Network has a wide range of resources which discuss ways to overcome imposter syndrome, from free books to on-demand webinars.