Answer:
Environment
Explanation:
In a research study, internal validity refers to how well an experiment was carried out and to what extent the piece of evidence supports a claim.
The lesser the chance of confounding in a study the higher the internal validity.
Study of memory is possible through learning the electrical activity created by neurons.
Therefore, thunderstorm will affect the readings hence it is an Environmental threat to the internal validity.
Treatment for depression should begin when it begins to affect your everyday life, job, friendships, relationships, and similar.
People rather sit on their phones and not go outside or go to social events with others ...
"Food portions in restaurants tend to be much larger than serving sizes recommended."
"In order to use My Plate properly, it is important to know your personal daily food plan."
