Most people's earliest memories do not predate of age.

The answer is six months. The Earliest memories an individual can remember is by the age of six months, memories from earlier months, such as two months of age are hard to remember or be familiar with, because the brain hasn’t fully developed.

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.        

these are the choices

local priests

european monarchs

common people

bible translators