Identify one way faculty researchers can possibly avoid undue influence of student subjects?

Answer: Faculty researchers should not make use of their students in the course of having their research.

Explanation: when faculty researchers make use if students from other classes, familiarity is first knocked out, so undue manipulation of result is minimized. Making use of students from the faculty's class room might make it look like the students are being force to be part of it, so in order to avoid these, it is better to employed students from other faculties where necessary.