How can you deal with difficult questions?

I would say the best way to deal with difficult questions is to stay calm. Read and reread the whole question and use what you know to answer to your best knowledge. The worst thing you can do for yourself is freak out. The knowledge is there. If the question is multiple choice, it always helps to look at the each answer and eliminate the answers you know are incorrect. Hope this helps! You’ve got this!

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.