a person displays a set of rare behaviors that psychologists had not known about previously, because nobody had ever shown them before. the best strategy to investigate the nature of those behaviors is

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.

answer; community based corrections;

answer; belief perseverance;