MaryMac Books


For more than 30 years ITD has been Australia’s leading training organization using Jung’s theory of Psychological Types and related instruments, including the MajorsPTITM and the Myers-Briggs Type Indicator (MBTI®) instrument.  We continue to provide high quality training and certification in psychological type theory and the application of type theory in such areas as team building, coaching, counselling, stress, education, behaviour management and personality development.

Online Books


Ideal resource for introducing clients to type. Packed with information, including two pages about each Type!   RRP $13. 

Written and published in Australia.



   Professional training in 2022:

Majors Personality Type Inventory Certification        

Become certified to purchase and use this instrument to use with individuals or groups.  Next Virtual program:  5 half days, March    Contact ITD for other dates. 


MajorsPT- Elements  (Step II)  Certification Program

An instrument that identifies the 8 preferences, gives information on 16 subscales and identifies blockages to development..                                                                       Next Virtual program:  2 half days, March       Contact ITD for other dates.             _______________________________________________________   

Other training available in 2022, please enquire:  

Using Type theory in Coaching

Using Type theroy in Team Building 

Survival Games Personalities Play

Using Type theory in Counselling 

Stress and Personality Type

An Introduction to the 16 personality Types



Email:   or   call Mary McGuiness on 0417661104.



  2022 ...  Covid-19         

ITD is currently offering LIVE INTERACTIVE TRAINING via ZOOM.

Due to social distancing recommendations during the covid-19 pandemic ITD has temporarily suspended in-person training. 

We hope to resume in-person training sometime in 2022.  Contact Mary McGuiness at ITD for more information or to negotiate dates for training.



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