Thomas and Chess identified nine dimensions of temperament: activity level, regularity, approach, adaptability, intensity, sensory threshold, mood, distractibility and persistence.

托马斯切斯确定了气质的九个维度：活动水平、规律、、适应、强度、感觉值、情绪、注意力分久。

Rothbart explored other temperamental dimensions such as soothability and fear, as well as redefining the dimension of 'approach' as a baby's positive excitement and rapid advance toward new situations.

罗斯巴特探索了其他情绪维度，如安抚恐惧，并重新定义了“”维度，即婴儿对新情况积极兴奋快速推进的倾向度。