As Jarrod became increasingly depressed, he withdrew from his relationships, had difficulty being engaged in his daily routines, and seemed to avoid once pleasurable activities. While his avoidance behaviors seemed at first to provide relief, they also contributed to worsening depression. Behavior therapists would most likely emphasize which of the following to break his cycle of depression? a. not very effective in reducing drug use (e. g., based on a low overall effect size).
b. highly effective in changing drug use (e. g., based on a very large overall effect size).
c. moderately effective for reducing most drug use, but less so for tobacco.
d. most effective in reducing tobacco use, and minimally effective with other (hard) drugs.