The stage of the General Adaptation Syndrome that is most similar to the fight-or-flight response is the _________ stage

Melatonin is released by the ________

Fill in the blank(s) with the appropriate word(s).

Cross-cultural studies of mood disorders are made difficult due to

A) differences in diagnostic practices. B) the variability in the prevalence of unipolar disorders. C) the variability in the prevalence of bipolar disorders. D) the lack of clear-cut distinctions between bipolar and unipolar disorders.