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

托马斯和切斯确定了气质的九个维度：活动水平、规律性、趋性、适应性、强度、感觉值、情绪、注意力分散和持久性。

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，如安抚性和，重新定义了“趋性”维度，即婴儿对新情况积极兴奋和快速推进的倾向度。