In Socionics, the acronym IEI stands for Intuitive Ethical Introvert. This type is also referred to as INFp, with the lowercase ""p"" denoting the preference for the perceiving function of introverted intuition (Ni). The IEI is characterized by a focus on internal emotional states and deep connections with others. They are often seen as dreamers, imaginative, and empathetic individuals who rely on their intuition to navigate the world.

When comparing Socionics types to MBTI types, there are a few key differences. Socionics places a greater emphasis on intertype relations and the dynamics between different types, whereas MBTI primarily focuses on individual personality traits. Socionics also introduces the concept of information metabolism, which describes how different types process and exchange information. Additionally, Socionics has a more comprehensive model of the cognitive functions, including eight functions rather than the four in MBTI. This allows for a more nuanced understanding of how each type interacts with the world and processes information. Overall, Socionics provides a more detailed and interconnected framework for understanding personality dynamics and interpersonal relationships.