There are two versions based on this model: an Extended STQ (STQ-150) and a Short STQ (STQ-26).
The Extended STQ is a 150-item self-report measure with 144 items assigned to 12 temperament scales (12 items each), 1 validity scale (6 items), and 6 indexes, which combine these scales.
It started from extensive experiments on several species of mammals, and then continued with human adults and children within the Pavlovian Institute of Highest Nervous Activity (Pavlov, 1941, 1957).
Both models and all versions of the STQ follow the activity-specific approach, which differentiates between the traits related to 3 aspects of behavior: social-verbal, physical and mental.
Both models and all modern versions have 12 temperament scales.
The value on this scale varies from 6 and 24, and protocols having a score higher than 17 on this scale are considered to be invalid.
There was also an initial version of Rusalov`s model, STQ-105, which used the same items and scales as the 8 scales of the STQ-150 (Extended) version, with the exception of the three scales related to intellectual aspects of activities (Intellectual Ergonicity, Intellectual Plasticity, Intellectual Tempo, Intellectual Emotionality).
These characteristics are the most consistent aspects of behavior of an individual across his or her lifespan and are relatively independent of the content of the situation.
Initially all versions of the STQ were validated on adult samples and were designed for the purposes of organizational, educational and clinical psychology.
The Short STQ (STQ-26) is composed of 2 out of 12 items on each scale of the Extended STQ, including the validity scale. Benefits of distinguishing between physical and social-verbal aspects of behaviour: an example of generalized anxiety. doi: 10.3389/fpsyg.2016.00338 PDF This model is called the Functional Ensemble of Temperament, because it considers temperament traits as reflecting functional aspects of behavior in a diversity of situations: * three dynamical aspects of the construction of an action (energetic, dynamic and orientational), presented here as three columns.
This version was adapted for the assessment of adults, teenagers, preschool and early school children (Rusalov, 2004). * similarly to Rusalov`s model, this model differentiates between physical-motor and verbal-social aspects of well-determined activities, and considers the probabilistic traits of temperament (3 top traits) as related to the mental, intellectual aspects of activities.
The values on each of temperament scales vary between 12 and 48.
The validity scale is designed to measure a social desirability tendency.
The top row in the Figure addresses probabilistic situations (high uncertainty), and the two middle rows of 6 traits relate to the more defined (deterministic) aspects of actions.