Almost everything, the ozone layer being destroyed, pollution,
Any condition characterized by cognitive and emotional disturbances, abnormal behaviors, impaired functioning, or any combination of these. Such disorders cannot be accounted for solely by environmental circumstances and may involve physiological, genetic, chemical, social, and other factors.
That’s the exact definition of a physchological disorder according to the APA
You think of local diversity as, other people culture.
Experimenter bias can best be controlled using Double-blind control.
Bc they are only out for a limited amount of time