Historical development
:''See also Historical Development of Theories of the Four Temperaments'' David Keirsey became familiar with the work of Ernst Kretschmer and William Sheldon after WWII in the late 1940s. Keirsey developed the Temperament Sorter after being introduced to the MBTI in 1956. Tracing the idea of temperament back to the ancient Greeks, Keirsey developed a modern temperament theory in his books ''Please Understand Me'' (1978), ''Portraits of Temperament'' (1988), ''Presidential Temperament'' (1992), ''Please Understand Me II'' (1998), ''Brains and Careers'' (2008), and ''Personology'' (2010). The table below shows how Myers' and Keirsey's types correspond to other temperament theories or constructs, dating from ancient times to the present day.Four temperaments
Keirsey expanded on the ancient study of temperament byArtisan
The Artisan temperament is one of four temperaments defined by Keirsey. Correlating with the SP (sensing–perceiving) Myers-Briggs types, the Artisan temperament comprises the following role variants (listed with their correlating Myers-Briggs types): Composer (ISFP), Crafter (ISTP), Performer (ESFP), and Promoter (ESTP). Artisans are concrete and adaptable. Seeking stimulation and virtuosity, they are concerned with making an impact. Their greatest strength is ''tactics''. They excel at troubleshooting, agility, and the manipulation of tools, instruments, and equipment. The two roles are as follows: :* Operators are the directive (proactive) Artisans. Their most developed intelligence operation is ''expediting''. The attentive Crafters and the expressive Promoters are the two role variants. :* Entertainers are the informative (reactive) Artisans. Their most developed intelligence operation is ''improvising''. The attentive Composers and the expressive Performers are the two role variants.Guardian
The Guardian temperament is one of four temperaments defined by Keirsey. Correlating with the SJ (sensing–judging) Myers–Briggs types, the Guardian temperament comprises the following role variants (listed with their correlating Myers–Briggs types): Inspector (ISTJ), Protector (ISFJ), Provider (ESFJ), and Supervisor (ESTJ). Guardians are concrete and organized (scheduled). Seeking security and belonging, they are concerned with responsibility and duty. Their greatest strength is ''logistics''. They excel at organizing, facilitating, checking, and supporting. The two roles are as follows: :*Administrators are the directive (proactive) Guardians. Their most developed intelligence operation is ''regulating''. The attentive Inspectors and the expressive Supervisors are the two role variants. :* Conservators are the informative (reactive) Guardians. Their most developed intelligence operation is ''supporting''. The attentive Protectors and the expressive Providers are the two role variants.Idealist
The Idealist temperament is one of four temperaments defined by Keirsey. Correlating with the NF (intuitive–feeling) Myers-Briggs types, the Idealist temperament comprises the following role variants (listed with their correlating Myers-Briggs types): Champion (ENFP), Counselor (INFJ), Healer (INFP), and Teacher (ENFJ). Idealists are abstract and compassionate. Seeking meaning and significance, they are concerned with personal growth and finding their own unique identity. Their greatest strength is ''diplomacy''. They excel at clarifying, individualizing, unifying, and inspiring. The two roles are as follows: :* Mentors are the directive (proactive) Idealists. Their most developed intelligence operation is ''developing''. The attentive Counselors and the expressive Teachers are the two role variants. :* Advocates are the informative (reactive) Idealists. Their most developed intelligence operation is ''mediating''. The attentive Healers and the expressive Champions are the two role variants.Rational
The Rational temperament is one of the four temperaments defined by Keirsey. Correlating with the NT (intuitive–thinking) Myers-Briggs types, the Rational temperament comprises the following role variants (listed with their correlated Myers-Briggs types): Architect (INTP), Fieldmarshal (ENTJ), Inventor (ENTP), and Mastermind (INTJ).Keirsey.com Portrait of the RationalFour interaction roles
In his book ''Brains and Careers'' (2008), Keirsey divided the role variants into groupings that he called "four differing roles that people play in face-to-face interaction with one another."Brains and CareersTemperaments and intelligence types
The following table shows how the four rings relate to one another and to the various temperaments.Myers–Briggs types versus Keirsey's temperaments
The type descriptions of Isabel Myers differ from the character descriptions of David Keirsey in several important ways: * Myers primarily focused on how people think and feel; Keirsey focused more on behavior, which is directly observable. * Myers's descriptions use a linear four-factor model; Keirsey's descriptions use a systems field theory model. * Myers, following Jung's lead, emphasized the extraversion/introversion (expressive/attentive) dichotomy; Keirsey's model places greater importance on the sensing/intuition (concrete/abstract) dichotomy. * Myers grouped types by 'function attitudes'; Keirsey, by temperament. Myers grouped types according to cognitive function: the 'thinking type' grouping for those with dominant thinking; the 'intuitive type' grouping for those with dominant intuition; the 'feeling type' grouping for those with dominant feeling; and the 'sensing type' grouping for those with dominant sensing. Keirsey's temperaments correlate with Myers' combinations of preferences: Guardians with sensing plus judging (SJ); Artisans with sensing plus perceiving (SP); Idealists with intuition plus feeling (NF); and Rationals with intuition plus thinking (NT). Myers paired ESTJs with ENTJs, ISFPs with INFPs, INTPs with ISTPs, and ENFJs with ESFJs because they share the same dominant function attitude. ESTJs and ENTJs are both extraverted thinkers, ISFPs and INFPs are both introverted feelers, INTPs and ISTPs are both introverted thinkers, and ENFJs and ESFJs are both extraverted feelers. Keirsey holds that these same groupings are very different from one another because they are of different temperaments. ESTJs are Guardians whereas ENTJs are Rationals; ISFPs are Artisans whereas INFPs are Idealists; INTPs are Rationals whereas ISTPs are Artisans; and ENFJs are Idealists whereas ESFJs are Guardians.Empirical validation
In a 2001 peer-reviewed study published in the ''Journal of Career Assessment'', data from the Keirsey Temperament Sorter II online instrument and MyersSee also
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