As the Supreme Court considers a case regarding discrimination at Wal-Mart, a key issue is sociologist William Bielby’s research.

Plaintiffs in the class-action suit, who claim that Wal-Mart owes billions of dollars to as many as 1.5 million women who they say were unfairly treated on pay and promotions, enlisted the support of William T. Bielby, an academic specializing in “social framework analysis.”

Bielby concluded that two aspects of Wal-Mart’s culture might be behind pay and other disparities.

One was a centralized personnel policy. The other was allowing subjective decisions by managers in the field. Together, he said, those factors allowed stereotypes to infect personnel choices, making “decisions about compensation and promotion vulnerable to gender bias

Now, a main question in the case is whether Bielby should have been allowed to use general research to draw specific conclusions in the preliminary proceedings.

“Bielby made a conclusion that he had no basis to make,” said Laurens Walker, one of two University of Virginia professors who coined the term for the analysis almost 25 years ago. “He hasn’t done the research.”

But a brief supporting the plaintiffs from the American Sociological Association said that Professor Bielby’s work explaining how Wal-Mart’s policies may have led to discrimination “is well within our discipline’s accepted methods.”

Click here for the full story from the New York Times.