Habit-specific locus of control scales for drinking, smoking, and eating

The internal consistencies of three habit-specific locus of control scales measuring drinking, smoking, and eating behavior were evaluated using coefficient alpha. The three scales, along with Rotter's 1-E scale, were administered to 202 undergraduate students. Estimates indicated the scales showed reasonably high internal consistency. Scores on the smoking and drinking scales had the lowest correlations with scores on Rotter's generalized measure. Mean drinking scale scores were lower than those for smoking and eating, suggesting that people judge drinking to be under more personal control. The implications of habit-specific expectancies, particularly with regard to habit disorders, are discussed.