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What does the Temperament dimension measure in the WPI?

The WPI's Temperament dimension measures a person's emotional patterns, energy levels, and stress responses — how they experience and regulate emotion, what energizes or drains them, and how they show up under pressure. The Watterson Personality Inventory (WPI), developed by psychologist Dr. David G. Watterson, Jr., measures temperament as one of six validated dimensions, drawing on the Big Eleven temperament scales as part of its scientific foundation.

What is the difference between temperament and personality?

Temperament refers specifically to the emotional and energetic patterns that characterize how someone experiences their inner life — stress responses, recovery patterns, emotional regulation tendencies. Personality is a broader concept that encompasses temperament alongside behavioral tendencies, motivational patterns, and social orientations. Temperament is one component of personality, not a synonym for it.

How does temperament affect work performance?

Temperament affects performance primarily through the fit between a person's natural emotional and energetic patterns and the demands of their work environment. Someone with high stress reactivity in a chronically high-pressure environment will not sustain the same performance as someone whose temperament is better matched to that environment — not because of capability, but because the emotional cost of the work is higher. Temperament mismatch is frequently mistaken for performance problems.

Is temperament fixed, or can it change?

Temperament is among the more stable dimensions of personality — the emotional and energetic patterns it captures tend to be relatively consistent across time and context. They can shift gradually with age and significant life experience, and they can be managed more effectively with self-awareness. But temperament is not a habit that can be changed with enough effort; it is a baseline that can be understood and accommodated.

What is emotional self-regulation and how does it relate to temperament?

Emotional self-regulation is the capacity to manage one's emotional responses — to moderate reactivity, recover from stress, and maintain functional behavior under pressure. Temperament influences the baseline from which self-regulation operates: someone with high stress reactivity has more to regulate than someone with low reactivity. Neither baseline is better; both benefit from understanding what they actually are.

How does temperament interact with other WPI dimensions?

Temperament is particularly meaningful in combination with Action Style — a low-urgency Action Style in a high-urgency environment produces a specific kind of temperamental strain. It also interacts with Values: a person who highly values autonomy but works in a heavily supervised environment may experience that misalignment as temperamental stress even if the core issue is a values mismatch. The dimensions illuminate each other.