Applying DISC in The Workplace
In the late 1950s and early 1960s, Dr. Thomas Hendrickson of TM Hendrickson and Associates, developed Marston’s insights further to produce the Thomas Personal Profile Analysis for the work place. PPA has since gone through rigorous tests to determine its consistency and validity. Studies done in the UK have compared PPA with 16PF and OPQ assessments and found that the four Dominance, Influence, Steadiness and Compliance domains are clearly recognisable when defined by the factor names of other inventories
The PPA is a forced choice IPSATIVE instrument. This means it describes the individual in a self-referential way and is regarded as providing information of importance and value to employers making personnel decisions. The Thomas PPA attempts to determine whether individuals see themselves as characteristically seeking out and/or reacting to work place situations that they perceive as supportive or challenging and to reveal if the response pattern is active or passive.
Thomas PPA is a self administered forced choice adjective checklist consisting of 24 tetrads of descriptive words from each of which applicants are asked to select which they believe describes them most and which least. The words chosen in Hendrickson’s first experiments were based on Marston’s definitive work. As far as possible the words selected corresponded to Marston’s model.
Read more about this topic: Thomas Personal Profile Analysis (PPA)
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