Why do you think hollywood is incorporating more realism in its special effects?

Hollywood is incorporating realism because the audience wants films to look and feel authentic. Audiences are getting smarter and can tell what looks real and what looks fake.

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.