__________ are characterized by significant problems with moods and emotions

"Kappa" is a measure of interrater reliability that describes

a. the proportion of time raters agree exactly. b. the proportion of agreement beyond chance agreement. c. whether certain diagnoses are used disproportionately. d. whether a clinician is equally accurate with all diagnoses.

Sandy's favorite activity is to go to Las Vegas and play the slot machines. Her gambling behavior is being reinforced on a __________ schedule

a) fixed-ratio b) fixed-interval c) variable-ratio d) variable-interval