Research shows that there is little to no fluctuation in an individual’s temperature from infancy to adulthood. This is an example of

Stability

Explanation:

Stability in scientific terms is defined as the condition in which there is no or negligible change occur in a test over time. Many researchers rely on the stability of a and consider only those test which stands stable over time.

The given research is an example of stability as there is an invariant change in an individual’s temperature from infancy to adulthood.

Hence, the answer is "Stability".

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.        

answer; taking detailed notes during the interview;