Questionnaire Concerning Functional Drinking

Please note that this product can only be administrated if you have an online VTS Subscription or a local VTS version from 8.0.00 or higher.

Field of Application+
Detailed Description+

Measures the extent to which the effects of alcohol are experienced as having a positive impact on mental state and the social function of drinking alcohol.
This clinical test measures the reinforcement value of alcohol consumption for the individual. From the statements that respondents make about the function of alcohol it is possible to identify individuals with alcohol problems. The test is therefore used mainly in clinical and traffic psychological settings.

Test forms+

S1: Long form – present
S2: Long form – past
S3: Short form – present


Using a four-point answer scale, respondents indicate the extent to which various statements apply or have applied to them. The previous answer can be corrected.


Other dimensions

Driving-related aspects of personality



English (USA)








If all subtests are presented, 10–20 minutes depending on test form.


Norms for ages 14+ (long forms).

Test administration+

Controlled Mode


The following main variables are scored:

In S3 the variable Symptoms of mental and physical dependence is not scored.

  • Excitatory effect of alcohol: Describes the stimulating effect of alcohol – the increase in self-confidence and readiness to take risks, reduction in self-control and critical ability.
  • Psychopharmacological effect of alcohol: Describes the effect of alcohol on mood and arousal level – anti-depressive, anti-anxiety and sedative components.
  • Sociodynamic function of alcohol: Describes the group-related and socially integrating effect of alcohol – making and maintainting contacts, having the confidence to approach people.
  • Exploiting a social context: Describes the culturally conditioned social acceptance of drinking in everyday life – drinking as an act of self-reward, drinking at parties.
  • Symptoms of mental and physical dependency: Complex process of the self-reinforcement of drinking – problems become motivation.

A discriminance score is also calculated: this indicates whether respondents should be classed as “normal drinkers” or alcohol-dependent individuals.

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Products specifications
LanguagesDutch, English (USA), French, German, Italian, Portuguese, Romanian, Russian
Test informationwide norm spectrum <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="In tests with a wide norm spectrum the norms cover a wide age range (wider than ages 16-84), or multiple norm samples (at least two) are available."></i>, modular <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="A test is described as modular if the user can decide which scales or subtests are to be presented. "></i>, conforms to the Rasch-model <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="For a test that conforms to the Rasch model the validity of the Rasch model or a comparable probabilistic test theory model has been proved. This means that all the test's item groups have been proved to measure one dimension and to be fair for various sociodemographic groups (such as different age groups)."></i>
DimensionsOther dimensions, Driving-related aspects of personality
Test typeClinical Tests