This is a perfect example of someone who has changed their personality to the point it is out of alignment with their affinity. You can sense the disparity even if you don't know what it is. Emotional states affect the personality but the alignment affinity can determine the range of depth of the emotional states. People of all alignments feel joy and sadness but the depth of their emotions are different.
A person with a happy 'bubbly' personality has a different personality when they are sad and crying or angry and fighting.
The affinity of alignment determines how likely and how deeply those emotional states are felt/displayed.



An example of the two ends of the alignment spectrum.
Most people fall somewhere in between.

"You can sense the disparity even if you don't know what it is"
So knowing that it's normal for me to sense something without knowing what it is, wich is a fundamental trait of my personality type, makes me a perfect example of someone who has changed their personality?
Also people with different "affinities" feell pain,sadness...at the same level but they react differently per instance if "A lawful good" and "A chaotic evil" person both lost someone who they hold the dearest they'll both feel the same but they will react differently to it the first may grow flowers next to his/her grave ,the other may raise cities in his/her name ,it's the reaction not the depth of the feeling .Also it deppends on how tolerant they are to the feeling it self, example one who never lost anybody close will and another who lost many, they both feel the same sadness but one cope with it the other can't believe it hurts that much hence the false depth factor

I've taken it several times over the years. I'm an INFP.

I took the test. It said I flunked.

OT: Mediator - INFP-T

Glad you enjoyed it

You were just nervous

Here this might make it easier to grasp...
Your personality is who you are.
Your alignment is what you are.
Personality is specific and alignment is overall baseline.

Personalities change over time and according to the current stimuli.
A person can manipulate their personality according to who they are interacting with. A person can effectively change their personality as new wisdom is gained.
No matter the personality they adopt for a given interaction, their alignment sets the 'code' of their personality limits.

Example; I have an alignment with the 'good' side of the scale.
I can show a personality that mimics an evil alignment but there is always a limit as to how far I will take it. My personality always reverts back to 'good' alignment.
There are people baselined in 'evil' alignment. They can adopt a seemingly 'good' personality but it always reverts back to their 'evil' alignment.

The words 'good', 'neutral' & 'evil' are merely a way to simplify the complexity. The actual alignments are much more complex.
There are 16 personality type assignments. There are 12 alignment assignments. No one person is exactly any one personality type but most people do have one affinity to alignment.

If you have ever met anyone that is 'two-faced' you have an example of someone able to manipulate their personality according to association.
Chances are, their alignment is 'low neutral' or 'high evil'. Narcissistic people can appear to have warm personalities as long as they get what they need from the association. However, when they no longer get what they need, they revert back to a personality that more closely resembles their basic alignment.

I personally have some traits in multiple personality descriptions to various degrees at different times.

ISTJ - The Duty Fulfiller

Serious and quiet, interested in security and peaceful living. Extremely thorough, responsible, and dependable. Well-developed powers of concentration. Usually interested in supporting and promoting traditions and establishments. Well-organized and hard working, they work steadily towards identified goals. They can usually accomplish any task once they have set their mind to it.

ISTP - The Mechanic

Quiet and reserved, interested in how and why things work. Excellent skills with mechanical things. Risk-takers who they live for the moment. Usually interested in and talented at extreme sports. Uncomplicated in their desires. Loyal to their peers and to their internal value systems, but not overly concerned with respecting laws and rules if they get in the way of getting something done. Detached and analytical, they excel at finding solutions to practical problems.

ISFJ - The Nurturer

Quiet, kind, and conscientious. Can be depended on to follow through. Usually puts the needs of others above their own needs. Stable and practical, they value security and traditions. Well-developed sense of space and function. Rich inner world of observations about people. Extremely perceptive of other's feelings. Interested in serving others.

ISFP - The Artist

Quiet, serious, sensitive and kind. Do not like conflict, and not likely to do things which may generate conflict. Loyal and faithful. Extremely well-developed senses, and aesthetic appreciation for beauty. Not interested in leading or controlling others. Flexible and open-minded. Likely to be original and creative. Enjoy the present moment.

INFJ - The Protector

Quietly forceful, original, and sensitive. Tend to stick to things until they are done. Extremely intuitive about people, and concerned for their feelings. Well-developed value systems which they strictly adhere to. Well-respected for their perseverance in doing the right thing. Likely to be individualistic, rather than leading or following.

INFP - The Idealist

Quiet, reflective, and idealistic. Interested in serving humanity. Well-developed value system, which they strive to live in accordance with. Extremely loyal. Adaptable and laid-back unless a strongly-held value is threatened. Usually talented writers. Mentally quick, and able to see possibilities. Interested in understanding and helping people.

INTJ - The Scientist

Independent, original, analytical, and determined. Have an exceptional ability to turn theories into solid plans of action. Highly value knowledge, competence, and structure. Driven to derive meaning from their visions. Long-range thinkers. Have very high standards for their performance, and the performance of others. Natural leaders, but will follow if they trust existing leaders.

INTP - The Thinker

Logical, original, creative thinkers. Can become very excited about theories and ideas. Exceptionally capable and driven to turn theories into clear understandings. Highly value knowledge, competence and logic. Quiet and reserved, hard to get to know well. Individualistic, having no interest in leading or following others.

ESTP - The Doer

Friendly, adaptable, action-oriented. "Doers" who are focused on immediate results. Living in the here-and-now, they're risk-takers who live fast-paced lifestyles. Impatient with long explanations. Extremely loyal to their peers, but not usually respectful of laws and rules if they get in the way of getting things done. Great people skills.

ESTJ - The Guardian

Practical, traditional, and organized. Likely to be athletic. Not interested in theory or abstraction unless they see the practical application. Have clear visions of the way things should be. Loyal and hard-working. Like to be in charge. Exceptionally capable in organizing and running activities. "Good citizens" who value security and peaceful living.

ESFP - The Performer

People-oriented and fun-loving, they make things more fun for others by their enjoyment. Living for the moment, they love new experiences. They dislike theory and impersonal analysis. Interested in serving others. Likely to be the center of attention in social situations. Well-developed common sense and practical ability.

ESFJ - The Caregiver

Warm-hearted, popular, and conscientious. Tend to put the needs of others over their own needs. Feel strong sense of responsibility and duty. Value traditions and security. Interested in serving others. Need positive reinforcement to feel good about themselves. Well-developed sense of space and function.

ENFP - The Inspirer

Enthusiastic, idealistic, and creative. Able to do almost anything that interests them. Great people skills. Need to live life in accordance with their inner values. Excited by new ideas, but bored with details. Open-minded and flexible, with a broad range of interests and abilities.

ENFJ - The Giver

Popular and sensitive, with outstanding people skills. Externally focused, with real concern for how others think and feel. Usually dislike being alone. They see everything from the human angle, and dislike impersonal analysis. Very effective at managing people issues, and leading group discussions. Interested in serving others, and probably place the needs of others over their own needs.

ENTP - The Visionary

Creative, resourceful, and intellectually quick. Good at a broad range of things. Enjoy debating issues, and may be into "one-up-manship". They get very excited about new ideas and projects, but may neglect the more routine aspects of life. Generally outspoken and assertive. They enjoy people and are stimulating company. Excellent ability to understand concepts and apply logic to find solutions.

ENTJ - The Executive

Assertive and outspoken - they are driven to lead. Excellent ability to understand difficult organizational problems and create solid solutions. Intelligent and well-informed, they usually excel at public speaking. They value knowledge and competence, and usually have little patience with inefficiency or disorganization.

Now look at the Alignments

Lawful Good

A lawful good character acts as a good person is expected or required to act. He combines a commitment to oppose evil with the discipline to fight relentlessly. He tells the truth, keeps his word, helps those in need, and speaks out against injustice. A lawful good character hates to see the guilty go unpunished.
Lawful good is the best alignment you can be because it combines honor and compassion.
Lawful good can be a dangerous alignment when it restricts freedom and criminalizes self-interest.

Neutral Good

A neutral good character does the best that a good person can do. He is devoted to helping others. He works with kings and magistrates but does not feel beholden to them.
Neutral good is the best alignment you can be because it means doing what is good without bias for or against order.
Neutral good can be a dangerous alignment when it advances mediocrity by limiting the actions of the truly capable.

Chaotic Good

A chaotic good character acts as his conscience directs him with little regard for what others expect of him. He makes his own way, but he's kind and benevolent. He believes in goodness and right but has little use for laws and regulations. He hates it when people try to intimidate others and tell them what to do. He follows his own moral compass, which, although good, may not agree with that of society.
Chaotic good is the best alignment you can be because it combines a good heart with a free spirit.
Chaotic good can be a dangerous alignment when it disrupts the order of society and punishes those who do well for themselves.

Lawful Neutral

A lawful neutral character acts as law, tradition, or a personal code directs her. Order and organization are paramount to her. She may believe in personal order and live by a code or standard, or she may believe in order for all and favor a strong, organized government.
Lawful neutral is the best alignment you can be because it means you are reliable and honorable without being a zealot.
Lawful neutral can be a dangerous alignment when it seeks to eliminate all freedom, choice, and diversity in society.

True Neutral

A neutral character does what seems to be a good idea. She doesn't feel strongly one way or the other when it comes to good vs. evil or law vs. chaos. Most neutral characters exhibit a lack of conviction or bias rather than a commitment to neutrality. Such a character thinks of good as better than evil-after all, she would rather have good neighbors and rulers than evil ones. Still, she's not personally committed to upholding good in any abstract or universal way.
Some neutral characters, on the other hand, commit themselves philosophically to neutrality. They see good, evil, law, and chaos as prejudices and dangerous extremes. They advocate the middle way of neutrality as the best, most balanced road in the long run.
Neutral is the best alignment you can be because it means you act naturally, without prejudice or compulsion.
Neutral can be a dangerous alignment when it represents apathy, indifference, and a lack of conviction.

Chaotic Neutral

A chaotic neutral character follows his whims. He is an individualist first and last. He values his own liberty but doesn't strive to protect others' freedom. He avoids authority, resents restrictions, and challenges traditions. A chaotic neutral character does not intentionally disrupt organizations as part of a campaign of anarchy. To do so, he would have to be motivated either by good (and a desire to liberate others) or evil (and a desire to make those different from himself suffer). A chaotic neutral character may be unpredictable, but his behavior is not totally random. He is not as likely to jump off a bridge as to cross it.
Chaotic neutral is the best alignment you can be because it represents true freedom from both society's restrictions and a do-gooder's zeal.
Chaotic neutral can be a dangerous alignment when it seeks to eliminate all authority, harmony, and order in society.

Lawful Evil

A lawful evil person methodically takes what he wants within the limits of his code of conduct without regard for whom it hurts. He cares about tradition, loyalty, and order but not about freedom, dignity, or life. He plays by the rules but without mercy or compassion. He is comfortable in a hierarchy and would like to rule, but is willing to serve. He condemns others not according to their actions but according to race, religion, homeland, or social rank. He is loath to break laws or promises.
This reluctance comes partly from his nature and partly because he depends on order to protect himself from those who oppose him on moral grounds. Some lawful evil people have particular taboos, such as not killing in cold blood (but having underlings do it) or not letting children come to harm (if it can be helped). They imagine that these compunctions put them above unprincipled people.
Some lawful evil people commit themselves to evil with a zeal like that of a crusader committed to good. Beyond being willing to hurt others for their own ends, they take pleasure in spreading evil as an end unto itself. They may also see doing evil as part of a duty to an evil deity or master.
Lawful evil is sometimes called "diabolical," because devils are the epitome of lawful evil.
Lawful evil people consider their alignment to be the best because it combines honor with a dedicated self-interest.
Lawful evil is the most dangerous alignment because it represents methodical, intentional, and frequently successful evil.

Neutral Evil

A neutral evil person does whatever he/she can get away with. He/She is out for themselves, pure and simple. They shed no tears for others the exploit, whether for profit, sport, or convenience. They have no love of order and hold no illusion that following laws, traditions, or codes would make them any better or more noble. On the other hand, they don't have the restless nature or love of conflict that a chaotic evil person has.
Some neutral evil people hold up evil as an ideal, committing evil for its own sake. Most often, such people are devoted to evil deities or secret societies.
Neutral evil people consider their alignment to be the best because they can advance themselves without regard for others.
Neutral evil is the most dangerous alignment because it represents pure evil without honor and without variation.

Chaotic Evil

A chaotic evil person does whatever his greed, hatred, and lust for destruction drive him to do. He is hot-tempered, vicious, arbitrarily violent, and unpredictable. If he is simply out for whatever he can get, he is ruthless and brutal. If he is committed to the spread of evil and chaos, he is even worse. Thankfully, his plans are haphazard, and any groups he joins or forms are poorly organized. Typically, chaotic evil people can be made to work together only by force, and their leader lasts only as long as he can thwart attempts to topple or assassinate him.
Chaotic evil is sometimes called "demonic" because demons are the epitome of chaotic evil.
Chaotic evil beings believe their alignment is the best because it combines self-interest and pure freedom.
Chaotic evil is the most dangerous alignment because it represents the destruction not only of beauty and life but also of the order on which beauty and life depend.

How does one determine which personality type they are? Because I read them all and feel that I have personality traits in most of them. I am definitely Neutral good though considering it seems to fit me best.

Personality types are meaningless and not scientific. They were basically created to separate people and keep certain people from certain things.