经验开放性（Openness to experience）是一个心理学概念，用来描述人格的五种特质之一，开放性包括活跃的想象力、审美感受性、对内心感受的专注性，对种类的偏好，以及对知识的好奇心。大量的心理学研究表明，这些品质在统计学上相关。因此，开放性可以被看作是一个由一系列具体的特质、习惯和倾向集中在一起组成的人格特质。

开放性呈正态分布，只有少数人的得分非常高或非常低，大多数人的得分接近平均值。开放性得分较低者被认为是“经验封闭”。他们的观点和行为方式通常较为传统，喜欢熟悉的套路而不是新的经验，一般兴趣范围较窄。

Openness to experience is one of the domains which are used to describe human personality in the Five Factor Model. Openness involves six facets, or dimensions, including active imagination (fantasy), aesthetic sensitivity, attentiveness to inner feelings, preference for variety, and intellectual curiosity. A great deal of psychometric research has demonstrated that these facets or qualities are significantly correlated. Thus, openness can be viewed as a global personality trait consisting of a set of specific traits, habits, and tendencies that cluster together.