To prevent bias, the researchers examining the obstetric records did not know which belonged to people with disorders.

To at once gain valid information and prevent bias, we had simply been asking people, "What was your strangest experience?"

Scoring is done on a school-blind basis to prevent bias.

He said state oversight of Co-op City prevents such bias.

Experimental blinding is a process to prevent bias, both conscious and subconscious, skewing results.

The survey specifically avoided adult-oriented websites to prevent bias.

The advantage of such a double-blind arrangement is that it prevents bias in reporting symptoms.

To combat this tendency, scientific training teaches ways to prevent bias.

This helps prevent bias in treatment studies.

This system is designed to help prevent bias on the part of judges.