One of the oldest and best-known self-help groups worldwide is _____, which has been effective in helping its members with addiction

The value of the Pearson r indicates

a. the strength of the linear relationship between two sets of interval measures b. the strength of the non-linear relationship between two sets of interval measures c. the strength of the linear relationship between two sets of nominal measures d. all of these

With regard to somatic symptom disorder outcomes, as with all mental disorders,

a. it is completely random as to how a person responds. b. the more severe the symptoms, the more difficult the treatment. c. the more subtle the symptoms, the more elusive the cause. d. the more comorbidity, the better.