In a stratified sample subgroups in the general population need not be represented in the same proportion in the experimental sample

One study of the Life Skills Training program found significantly lower use of

A. marijuana. B. alcohol. C. tobacco. D. all of the above

According to Selye, some people may develop illnesses such as organ damage, depression, anxiety, or a weakened immune system during the _____ stage of the general adaptation syndrome

A) alarm B) collapse C) exhaustion D) resistance