A woman walks up decorated stairs in Frankfurt, Germany, on March 7, 2023, on the occasion of the International Women's Day. (PHOTO / AP)

Gender inequality has remained stagnant for a decade, according to research by the United Nations released on Monday, as cultural biases and pressures continue to hinder women's empowerment and leave the world unlikely to meet the UN's goal of gender parity by 2030.

Though education has always been hailed as key for improving economic outcomes for women, a survey revealed the broken link between the education gap and income, with the average income gap at 39 percent even in the 57 countries where adult women are more educated than men

Despite a surge in women's rights groups and social movements like Time's Up and MeToo in the United States, biased social norms and a broader human-development crisis heightened by COVID-19, when many women lost their income, have stalled progress on inequality.

In its latest report, the United Nations Development Programme tracked the issue through its Gender Social Norms Index, which uses data from the international research programme World Values Survey (WVS).

ALSO READ: Australia passes law forcing firms to disclose gender pay gap

The survey draws from data sets spanning 2010-2014 and 2017–2022 from countries and territories covering 85 percent of the global population.

The latest analysis showed that almost nine out of 10 men and women hold fundamental biases against women and that the share of people with at least one bias has barely changed over the decade. In 38 of the surveyed countries the share of people with at least one bias decreased to just 84.6 percent from 86.9 percent.

The degree of improvement over time has been "disappointing," said Heriberto Tapia, research and strategic partnership adviser at UNDP and co-author of the report.

The survey also noted that nearly half of the world's people think that men make better political leaders, while 43 percent think men are better business executives.

ALSO READ: Gender wage gap narrows, but work discrimination remains

"We need to change the gender biases, the social norms, but the ultimate goal is to change the power relations between women and men, between people," Aroa Santiago, gender specialist in inclusive economies at UNDP, told Reuters.

Though education has always been hailed as key for improving economic outcomes for women, the survey revealed the broken link between the education gap and income, with the average income gap at 39 percent even in the 57 countries where adult women are more educated than men.

More direct harm to women's wellbeing could be seen in views on violence, with more than one out of every four people believing it was justified for a man to beat his wife, the UNDP said.