John Holland is an Irish American inventor, theor, born Holland in County Clare, Ireland, he taught in Ireland between 1858 and 1872, he is a professor at Johns Hopkins University, devoted all his life to research,He also invented this well-known model around the world, his theory, and based on him as the first to invent submarines, where he presented his first plans to produce a submarine to the United States Navy in 1875 AD.

What is John Holland's theory? This theory is that an individual's choice of a profession is through the influence of genetic factors, environmental factors, and personal characteristics such as friends, parents, relatives, and the natural environment,According to John Holland's theory, there are six major categories that define the modern factor, the six types of personality are realist, investigative, artistic, social, adventurous, and traditional.

What are the main ideas in pattern theory (John Holland's theory)? Holland suggested six personality traits corresponding to six professional environments in which the individual adapts and tends,(Real environment: corresponding to the mechanical or mechanical occupational environment) A person who loves to work with his hands mainly by making and repairing things or assembling or operating equipment, avoids situations that require verbal skill or has to do with dealing with others, ambitious and persistent, able to organize their affairs,Among the occupations suitable for them are: a sailor - a butcher - a tailor - a carpenter - a mechanic - a construction profession - an engineer - specialists in the field of fish farming - an electrician.

(Exploring environment, corresponding to those with mental orientation) and she loves to study and solve problems related to mathematics or science, they enjoy collecting information or finding theories or facts, analyzing and interpreting them, and they prefer reading scientific and research journals, using computers and conducting laboratory experiments,Suitable professions for them: Physician - anesthesiologist - specialized in biochemistry - computer program analyst - specialist in archeology and biology.

Artistic personality (creator) Avoid situations that require physical skills Naturally admiring creative arts including writing and music High Femininity score Most emotionally expressive Best career choice Artistic genre: Graphic designer - musician or instrumentalist - Book Editor - Art Teacher.

(Social environment: corresponding to those with a social orientation) A social personality who likes to control their environment, this is the most common category among the six groups, they prefer teaching, social services and psychological counseling, they have good verbal skills in addition to communication skills, suitable professions for them, the teacher - social and psychological worker - Librarian - Security Guard - Medical Assistant.

(adventurous environment: corresponding to the economic environment) These people really have the skill to make a group of people convinced in a certain way, they care about power and social status, tend to unusual and dangerous work, prefer to make decisions that affect others and to be elected to office, the best career choice for the type of adventure: Sales Manager - Broker - School Manager.

The traditional personality (the organizer) gets their work done by obedient compliance, the person who belongs to this style prefers to be responsible for the details, they value success in business and enjoy working with other people, and is characterized as being organized, meticulous, number-oriented, methodical, efficient, committed and obedient, appropriate occupations For them: financial auditor - administrative assistant - customs inspector - data processor employee.