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Differences between LSI (ISTj) and SLI (ISTp)

1. When getting ready to start a project, ISTps spend more time planning and preparing for the project than ISTjs. In particular, ISTps spend more time discussing the plan, discussing options and ways to approach the project, etc.)

2. When doing a task, ISTjs are inclined to work for the sake of the result (for example, a reward or bonus for completing the task). In contrast to ISTps, ISTjs can renounce their comforts and conveniences for this; ISTjs evaluate their place of work by looking at what returns they get for the effort they invested (e.g., monetary, prestige, etc.).

3. ISTjs tend to put more effort than ISTps into finishing any new project they start.

4. ISTjs are able to change and make adjustments to their goals more easily than ISTps (depending on how progress is being made, etc.). ISTps on the other hand, prefer to stick with their original goals.

5. When working on a project, ISTps experience more discomfort (than ISTjs) if the project does not have a clearly delineated end-goal or result. This happens because ISTps have more difficulty monitoring and understanding how the project is developing than ISTjs because they are outside of the process.

6. ISTps are more likely to believe in objective truths than ISTjs. That is, ISTps are more likely to believe there is a correct or best way of doing something than ISTjs.

7. When it comes to completing a task, ISTjs are more likely than ISTps to mobilize for longer periods of time. Specifically, ISTjs tend to mobilize for an action early and stay mobilized for a longer period of time after the task has been completed. For ISTjs, this state of readiness is their natural state.

8. When conversing, ISTjs types are inclined to communicate in the form of monologues, where each party has "its turn." Because of that they subconsciously attempt to transform a dialogue into a series of monologues. Conversely, ISTps tend to prefer more of a question and answer style format.

9. When discussing work, ISTjs are more likely than ISTps to focus on the fruits of their labor, about what their effort will yield. ISTps on the other hand are more likely to focus on the environment they work in, e.g., their work conditions, conveniences, commute time, etc.

10. ISTjs tend to have stiffer more angular movements. ISTps tend to have more relaxed fluid movements.

11. ISTps are relatively more flexible and tolerant than ISTjs.

12. ISTps are more likely (than ISTjs) to use special rituals or other culturally accepted formalities when forming relationships with others. What that means is that the emotional proximity and relationship status for ISTps be more externally predetermined. Additionally, ISTps generally progress in relationships through stages, and therefore are more familiar with these stages than ISTjs. ISTps tend to be more linear in their relationship progression than ISTjs, and ISTps assign importance to the formalities of recognizing the start and end to each of these stages.

13. When developing a plan of action or process, ISTjs tend to see themselves as "within the process"; they are immersed in it. Often because of this, they have more difficulty managing several plans at once. On the other hand, ISTps tend to place themselves "outside of the process"; they dissociate from it. For them the process or situation is something external from themselves.

14. ISTps are not as inclined to compare and verify concepts as ISTjs. ISTps assume that these can have only one unique interpretation (the "correct" interpretation), and ISTps often do not think about the fact that the other person may be interpreting them differently. Much more than ISTjs, ISTps apply concepts such as "objective reality," "unequivocal facts," and de-emphasize concepts; ISTps consider that they know the "right" way of doing things, how something "truly is," etc.

15. The "comparison and verification of concepts" is a more common phenomenon among ISTjs than ISTps. This comparison not only concerns ISTjs methods, but also their understanding, terminology, etc. ISTjs are attuned to the fact that different people might understand and interpret different concepts and terms differently. They perceive terminology as well as actions of other people as part of the subjective concept inseparable from personal opinion, position, intent, etc. In contrast to ISTps who perceive terminology as "objective," ISTjs understand personal differences behind terminology (this applies even to well established terms) and they attempt to compare and verify them.

16. ISTjs tend to perceive events in an episodic manner, i.e., they see events evolve in discrete states rather than continuous changes. On the other hand, ISTps tend to perceive events in a continuous sequence; i.e., they see events evolving fluidly rather that one state to the next.

17. ISTjs are relatively better at assessing the emotional atmosphere occurring in a group or during an activity than ISTps.

18. ISTjs tend to have a more authoritarian, hierarchical leadership style than ISTps.

19. When describing the stages of an event, ISTps are more likely to focus on how stage A leads to stage B, how stage B leads to stage C, etc. ISTjs, on the other hand, focus more on the stages themselves without necessarily seeing or emphasizing the transitions or causes and effects of the stages to the extent that ISTps do.

20. ISTps tend to internally combine emotional exchanges with other activities rather than separating them out like ISTjs. E.g., ISTps see having fun occurring simultaneously with other activities, such as work or even serious affairs. ISTjs are more likely to internally separate out having fun with other activities, although the two can be interchanged at a high frequency.

21. When contemplating a task, it takes ISTps longer time to mobilize than ISTjs; i.e., ISTps prefer to spend some time in a more natural state of relaxedness which will then prepare them to subsequently mobilize and concentrate at the crucial moments, improving their performance.

22. ISTjs are more likely (than ISTps) to seek new and novel experiences rather than returning to something already lived through. They will generally only re-read a book, re-watch a movie, or revisit the same place if they have forgotten it or are hoping to learn something new from it.

23. ISTps have a relatively higher stress tolerance than ISTjs. ISTjs often struggle with continually changing situations more than ISTps do.

24. When describing why they undertook a project, ISTjs are more likely than ISTps to focus on the moment when a decision is made and to speak in detail about the stages of its implementation.

25. ISTjs are more inclined to believe there are relative truths than ISTps. That is, this relativity is perceived by ISTjs as an extenuation of the differing beliefs, opinions, intentions, etc. of each person.

26. When planning to complete something, ISTps are more likely to focus their attention on the goal itself, overlooking and deprioritizing the individual actions needed to reach that goal. On the other hand, ISTjs tend to focus their attention on the each action; i.e., they're focused on how each decision and choice is being made (towards reaching the goal), in a step by step process.

27. When something is perceived by ISTps as being incorrect, they are more likely (than ISTjs) to tell the person who made the error what they did wrong and how to do it the right way. ISTps are focused on who made the error and helping them to correct the mistake.

28. ISTps tend to judge their available options by how likely the option will help them reach their goal. If a choice no longer helps ISTps reach their goals, it will be dismissed and discontinued. On the other hand, ISTjs prefer to continue pursuing their current option, opting to adjust their ultimate goal in order to fit the current choice.

29. ISTps are more likely than ISTjs to use "emotional anchors" that resonate with their internal emotional condition. These emotional anchors could be a book, a movie, a place, a song, etc. ISTps use these anchors to strengthen their inner emotional state and thus will repeat the experience: e.g., re-reading a book, re-watching a movie, continually going back to a place to experience the emotions associated with it.

30. When describing reality, ISTjs are more likely to talk about the properties and structure of reality. ISTps are more likely to describe reality as movements, interactions, and changes.

31. When describing their reasoning for their actions, ISTps (more so than ISTjs) tend describe how and why they came to a certain decision, and focus less on the timing and initiation of the action.

32. ISTps tend to start more tasks and other projects than ISTjs, but the ISTps are less likely to complete all of them.

33. When meeting someone knew, ISTjs are not as likely as ISTps to perceive "getting to know somebody" as a special kind of activity. ISTjs know very well whey they are getting acquainted (i.e., what the purpose of the relationship is, be it business, personal, travel, etc.). ISTjs, in contrast with ISTps, do not divide the process of getting acquainted into consecutive stages; rather ISTjs immediately establish the necessary emotional distance in contact and can regulate it if needed. To bridge the gap between poorly acquainted people in a group ISTjs amp up the emotional tone; this can be mutually experienced happiness or misfortune. The name and title of the person are of secondary relevance to ISTjs and their relationship with the other person.

34. When working on a project, ISTps are more likely than ISTjs to break up larger tasks into several stages. Then ISTps mobilize to carry out each stage (and demobilize between the stages).

35. ISTps are rmore relaxed in their natural state than ISTjs. However ISTps will mobilize and concentrate when needed to accomplish an objective. After the task has been completed, ISTps demobilize again. This state of demobilization is the natural state of ISTps.

36. ISTps are comfortable making changes and adjustments to their decisions quite frequently. ISTjs, on the other hand, prefer to not make changes to their decisions.

37. ISTps tend to have a more democratic leadership style than ISTjs.

38. ISTjs are more likely than ISTps to tackle a task in its entirety, rather than breaking it up into smaller separate stages.

39. ISTjs tend to plan ahead, making decisions early. On the other hand, ISTps tend to prefer a wait and see, more spontaneous approach.

40. When something is perceived by ISTjs as being incorrect, they are more likely (than ISTps) to ask why it was done that way. Instead of necessarily trying to correct the person who made the error, ISTjs attempt to understand the person's reason for their decision/action.

41. ISTjs are relatively more rigid and stubborn than ISTps.

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