Validation of a Questionnaire of Motivations for Moderated and Severe Alcohol Consumption Among College Students.

: This work aimed to develop and validate a scale to assess motivations for alcohol drinking among Mexican college students. : The scale design consisted of applying a stimulus phrase to assess motivations for moderate alcohol drinking (up to three drinks per occasion) and severe alcohol consumption (four or more drinks) in 130 college students. The semantic network technique was applied to identify 15 defining motivations (with more considerable semantic weight) for each drinking level, constituting the pilot scale. The pilot scale was validated on 307 students from a public university in Mexico (255 with moderate drinking and 82 with severe consumption). : The final number of items per level of drinking was 10 (moderate drinking) and 13 (severe consumption). Internal reliability (Cronbach's alpha) for the first one was 0.886 with three factors that explain 57.5% of the total variance; the second had an alpha of 0.884 with four factors that explain 70.5% of the total variance. All the factors had positive correlations with the risk perception for alcohol drinking, and there was a positive correlation between severe consumption motivation and the risk perception for consumption of other substances. The confirmatory factor analysis showed that the proposed theoretical models adjust to the data with an error of approximately zero (i.e., RMSEA of 0.088 for moderate consumption and 0.074 for severe consumption), which also carefully measures the motivation for moderate and severe alcohol consumption among college students. : The new scale is valid and reliable for assessing motivations for moderate and severe alcohol consumption in Mexican college students. This may be a valuable tool to design and evaluate interventions for the prevention of alcohol use among college students.