Extraverted Thinking

Extraverted Thinking is one of the eight function-attitudes defined by Carl Jung. Thinking (T) is an outlook that focuses on looking at the world “impersonally” or “technically”, in terms of objects and how they work, which we can call the “mechanics” of things (including people), often with a focus on goals such as efficiency. People preferring it tend to think in terms of “true” or “false” (which is what will automatically determine “like/dislike”).
An "extraverted" attitude (e) indicates that this outlook generally draws from the environment; or the outer world of "objects" that the "subject" (individual ego) observes.

So extraverted Thinking (Te) can be described as an assessment of “correct/incorrect” (mechanical “truth”) by an environmental/cultural standard, where one turns outward, directly to objects to determine their proper relationship to each other. The individual’s assessment of true/false (mechanics of the situation) will be determined by the environment.
Every type does this, but for types who prefer Te, it will be their main form of decision-making, rather than an individual understanding of how things should work (Ti), or more "personal" or "interpersonal" criteria (F). These types will be denoted in the type code by a "T" and a "J"; i.e. "xxTJ"; the "J" pointing to Thinking, as the "Judgment" function, as being what is extraverted, or attuned to the environment.
The types holding the function as "dominant" are ESTJ and ENTJ, while for ISTJ and INTJ, it is "auxiliary". (For FP types, it is tertiary or inferior, and may also develop at some point in life).

Te Characteristics

As compared to those that use Introverted Thinking (Ti), individuals that use the cognitive function of Extraverted Thinking (Te) tend towards the following:

• Focused on outcomes - typically end results and objective reality; e.g., does it work or doesn't it?
• Asks is it logical? Does this thing make sense?
• Uses measures to evaluate results - numbers, criteria, benchmarks, etc.
• Brings facts in order to provide clarity
• Deciding either/or - i.e. asks a question and expects a yes or no answer
• As it is an external process, it tends to come across visibly and directly
• Tends to focus on organizing, structuring or segmenting into parts - such as the development of sequential steps to complete an activity (Te types tend to be planners)
• Can come across as blunt and binary by those who don't prefer the process