ISFJ（内倾/感觉/情感/判断）是迈尔斯·布里格斯性格分类法中十六种人格类型之一，在柯尔塞气质类型测试中被称为保护者，属于监护人的四种类型之一， 大概占人口的9%-14%。.

MBTI通过以下偏好将人们归类：

因为运用他们在这些领域的偏好，人们发展出了荣格和迈尔斯所说的人格类型。这根本的人格是来自四种偏好的动态交互作用，同时也有外在环境的影响以及个人的倾向。人们比较可能在他们的人格类型基础上发展习惯、举止和态度。每种人格类型都有它自己的潜在优势，和提供机遇能让这优势成长的领域。.

ISFJ (Introversion, Sensing, Feeling, Judging) is an abbreviation used in the publications of the Myers-Briggs Type Indicator (MBTI) to refer to one of sixteen personality types. The MBTI assessment was developed from the work of prominent psychiatrist Carl G. Jung in his book Psychological Types. Jung proposed a psychological typology based on the theories of cognitive functions that he developed through his clinical observations.