Jung's definition of attitude is a "readiness of the psyche to act or react in a certain way" Attitudes very often come in pairs, one conscious and the other unconscious.
The "presence of two attitudes is extremely frequent, one conscious and the other unconscious. This means that consciousness has a constellation of contents different from that of the unconscious, a duality particularly evident in neurosis"
Extraversion and introversion are the "attitude-types".
I conceive reason as an attitude
The rational attitude subdivides into the thinking and feeling psychological functions, each with its attitude.
The irrational attitude subdivides into the sensing and intuition psychological functions, each with its attitude. "There is thus a typical thinking, feeling, sensation, and intuitive attitude
When I take an abstract attitude...Abstraction is contrasted with concretism - a peculiarity of thinking and feeling which is the antithesis of abstraction”
The MBTI write-ups limit the use of "attitude" to the extraversion-introversion (EI) and judging-perceiving (JP) indexes.
The JP index is sometimes referred to as an orientation to the outer world and sometimes JP is classified as an "attitude." In Jungian terminology the term attitude is restricted to EI. In MBTI terminology attitude can include EI and also JP.
The above MBTI Manual statement, is restricted to EI," is directly contradicted by Jung's statement above that there is "a typical thinking, feeling, sensation, and intuitive attitude" and by his other uses of the term "attitude". Regardless of whether the MBTI simplification (or oversimplification) of Jung can be attributed to Myers, Gifts Differing refers only to the "EI preference", consistently avoiding the label "attitude". Regarding the JP index, in Gifts Differing Myers does use the terms "the perceptive attitude and the judging attitude" The JP index corresponds to the irrational and rational attitudes Jung describes, except that the MBTI focuses on the preferred orientation in the outer world in order to identify the function hierarchy. To be consistent with Jung, it can be noted that a rational extraverted preference is accompanied by an irrational introverted preference.