What is the EAS temperament model?

Developed by Buss and Plomin, EAS measures three core dimensions: Emotionality (reactivity to negative stimuli), Activity (energy and motor pace), and Sociability (preference for social interaction).

The EAS Temperament Scale uses parent-report or self-report questionnaires. Each dimension is assessed separately, allowing detailed profiles beyond simple four-type categorization.

Is the EAS model genetically based?

Yes. Twin studies show strong heritability for all three EAS dimensions, supporting the idea that temperament reflects innate biological predispositions rather than learned behaviors.