Sorry for lousy formatting: I don't know how to generate "bullets" as the original had, so take your time, or copy/paste and add them if you know how/where.
Here you go; hope this helps:
Since the world is constantly bombarding us with information and making demands upon us to respond to changes in the world, we use cognitive functions to process information and make decisions more efficiently. The dominant function is the first mental tool that you rely on in the process of trying to make sense of the world.
Extraverted functions (Se Ne Te Fe) are objective because they require you to respond quickly to change and integrate well with your surroundings. Introverted functions (Si Ni Ti Fi) are subjective because they require you to filter, process, and package information to be congruent with your personal experience.
What Introverted Sensing Does
focus: internal/bodily sensation of concrete facts and details
categorizes and stores data based on personal relevance
cultivated through reconciling new sense impressions with past ones
maintains a gradual and accumulative approach to life, carefully filtering and adapting data to construct a personalized repository of knowledge
values a careful, methodical, consistent approach to everything (often inadvertently becomes an expert through personal commitment to incremental learning)
driven to seek out familiarity, stability, consistency, security, rituals
makes decisions based on personal priorities, passions, commitments
defines true knowledge in terms of understanding how past events have influenced the meaning of the present
knows that respecting prior knowledge:
1) provides a valuable sense of continuity and perseverance for individuals and society,
2) makes progress and solves problems by learning well from historical mistakes and successes,
3) firmly anchors the self by imbuing personal goals, activities, and interests with purpose and meaning,
4) reduces conflict through utilizing well-established methods that provide corrective or reliable support to others/society
defines social relationships in terms of faithfully acting in accordance with one’s roles or societal station
interprets social relationships through tangible displays that affirm a willingness to fulfill duties and honor promises
inspires people with depth of expertise and supportive action (unsung heroes), especially by maintaining a grounded and realistic outlook in crisis situations.
Si-doms are usually drawn to careers or interests that allow them to: be responsible for managing details and implementing well-crafted plans or procedures; be exacting in enforcing rules/regulations they believe in; provide hands-on support to people/groups in achieving larger goals; manage situations or solve problems methodically; enjoy saving others from tedious or difficult tasks
Weaknesses of Si Dominants
(weaknesses usually stem from Si-Ne imbalances)
have trouble enjoying the moment due to fear of the future
only attend to information that is useful to themselves (myopic)
uncomfortable with change, uncertainty, ambiguity, behavior perceived as inconsistent or hypocritical
tend to lose sight of objective reasons for actions/decisions and excessively focus on their own personal priorities (overly subjective)
difficulty understanding that making good choices involves careful consideration of future possibilities and finding better methods (i.e. progress does not come simply from adhering to established rules, methods, or procedures)
can appear inflexible, dull, dogmatic, rigid to others
prefer to handle details themselves rather than delegate (distrustful)
stick to their own plans, sometimes irrationally, even when the results come out negatively; tend to persist in what they should give up and give up on what they should persist in (stubborn)
get easily offended if people do not honor the same principles/values as they do (nitpicky)
can forcefully take over others’ responsibilities (overbearing)
can overburden themselves with helping others and neglect their own health or feel guilty for having their own needs (too sacrificing)
easily embarrassed if they “do the wrong thing”; too concerned with appearing “proper” (image conscious)
high pressure to maintain inner stability can lead to irrational fear of change/risk as well as paralysis when faced with major decisions or important turning points in life
difficulty integrating knowledge that is seen as “unnecessary” or “unrealistic“
adapted from: Personality Type: An Owner’s Manual. Thomson, L. 1998.
How Functions Work: Dominant Si (ISTJ/ISFJ) - Cognitive Function Theory