Identify examples of biosocial and psychosocial effects that might be important for college students who participate in research, either as experimenters or as participants

What will be an ideal response?

Biosocial effects could include a number of factors:
(a) Age–Students may behave differently with a young student experimenter versus an older experimenter.
(b) Attractiveness–Students may respond differently to attractive versus unattractive people.
(c)) Gender–Students might act differently with people of the opposite versus opposite sex.
(d) Apparent competence–Studies that are well planned and carried out might be seen as more credible by participants, especially with student researchers.
Any characteristic that is seen as a fundamental part of the individual could lead to a biosocial effect.
Psychosocial effects are also numerous:
(a) Friendliness–People act differently in experiments depending on how friendly the experimenter is.
(b) Personality of the individual–People respond in different ways to different personalities.
Effects involve the experimenter and the participant, so the interaction goes both ways.