A scientist, conducting a research study on sleep and learning, questions her own objectivity and decides to let a third person, not associated with conducting the experiment, score the tests. The scientist is probably trying to eliminate .

experimenter bias

Explanation:

The scientist try to eliminate experimenter bias because in  experimenter bias experimenter influence the outcomes of participants by giving cues to obtained expected results. Such experiments are biased because  in this participants view and response controlled sub-consciously to meet the expected outcomes of experimenter.

answer; //it is discrimination to treat you unfairly compared to someone else,because of religion,race or

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.