Speaking generally a judging observer will tend to seize the conscious character, while a perceptive observer will be influenced more by the unconscious character, since judgement is chiefly interested in the conscious motivation of the psychic process, while perception tends to register the mere happening.
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refering to rational types:
The reasonableness that characterizes the conscious management of life in both these(extr. thinking & extr. feeling) types, involves a conscious exclusion of the accidental and non-rational. Reasoning judgment, in such a psychology, represents a power that coerces the untidy and accidental things of life into definite forms; such at least is its aim. Thus, on the one hand, a definite choice is made among the possibilities of life, since only the rational choice is consciously accepted; but, on the other hand, the independence and influence of those psychic functions which perceive life's happenings are essentially restricted. This limitation of sensation and intuition is, of course, not absolute. These functions exist, for they are universal; but their products are subject to the choice of the reasoning judgment. It is not the absolute strength of sensation, for instance, which turns the scales in the motivation of action, but judgment, Thus, in a certain sense, the perceiving-functions share the same fate as feeling in the case of the first type, or thinking in that of the second. They are relatively repressed, and therefore in an inferior state of differentiation. This circumstance gives a particular stamp to the unconscious [p. 455] of both our types; what such men do consciously and intentionally accords with reason (their reason of course), but what happens to them corresponds either with infantile, primitive sensations, or with similarly archaic intuitions.
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In reference to extraverted irrational types (Extr. intuition & sensing)
I call the two preceding types irrational for reasons already referred to; namely, because their commissions and omissions are based not upon reasoned judgment but upon the absolute intensity of perception. Their perception is concerned with simple happenings, where no selection has been exercised by the judgment. The objective occurrence is both law-determined and accidental. In so far as it is law-determined, it is accessible to reason; in so far as it is accidental, it is not. One might reverse it and say that we apply the term law-determined to the occurrence appearing so to our reason, and where its regularity escapes us we call it accidental. The postulate of a universal lawfulness remains a postulate of reason only; in no sense is it a postulate of our functions of perception. Since these are in no way grounded upon the principle of reason and its postulates, they are, of their very nature, irrational. Hence my term 'irrational' corresponds with the nature of the perception-types. But merely because they subordinate judgment to perception, it would be quite incorrect to regard these types as unreasonable. They are merely in a high degree empirical; they are grounded exclusively upon experience, so exclusively, in fact, that as a rule, their judgment cannot keep pace with their experience. But the functions of judgment are none the less present, although they eke out a largely unconscious existence.
This rational presentation is exclusively valid for the rational types; it by no means applies to the irrational, whose rapport is based not at all upon judgment but upon the parallelism of actual living events.
The remarkable indifference of the extraverted intuitive in respect to outer objects is shared by the introverted intuitive in relation to the inner objects. Just as the extraverted intuitive is continually scenting out new [p. 507] possibilities, which he pursues with an equal unconcern both for his own welfare and for that of others, pressing on quite heedless of human considerations, tearing down what has only just been established in his everlasting search for change, so the introverted intuitive moves from image to image, chasing after every possibility in the teeming womb of the unconscious, without establishing any connection between the phenomenon and himself.
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Introverted intuition apprehends the images which arise from the a priori, i.e. the inherited foundations of the unconscious mind. These archetypes, whose innermost nature is inaccessible to experience,
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5. Recapitulation of Introverted Rational Types (Intr. Feeling & Intr. Thikinking)
Both the foregoing types are rational, since they are founded upon reasoning, judging functions. Reasoning [p. 496] judgment is based not merely upon objective, but also upon subjective, data.
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refering to the introverted intuitive:
As a rule, the intuitive stops at perception; perception is his principal problem...