Personal Profile Analysis (PPA)
Gain an accurate insight into how your people behave at work, with Thomas’ behavioural assessment (PPA).
Assessment type: Behavioural profile
Format: 24 questions
Availability: 56 languages
Time to complete: 8 minutes
Training required: PPA International Accreditation
Validation: Registered with the British Psychological Society and audited against technical criteria established by the European Federation of Psychologists’ Associations
Background & Theory
In the late 1950s and early 1960s, Dr. Thomas Hendrickson developed William Moulton Marston’s DISC theory to produce the Thomas Personal Profile Analysis (PPA) for the work place.
The Thomas PPA describes 4 adapted behavioural factors. Each factor is seen as a scale of preference of style as perceived by an individual of his or her own behaviour in the workplace. The factors arise from different human needs, which result in habitual patterns of creating a characteristic “style”. These 4 factors are: Dominance, Influence, Steadiness and Compliance.
Format of the Thomas PPA test
When doing the Thomas PPA, individuals are asked to choose 2 trait adjectives from a list of 4, one ‘most like’ and one ‘least like’ them. This process is repeated 24 times, giving 48 choices from a total of 96 words. An individual’s response patterns are then compared to themselves rather than the scores of a comparison group.
Reliability & Validity
The Thomas PPA has been subject to rigorous scientific testing to determine its reliability and validity as a psychological assessment. The PPA is registered with the British Psychological Society (BPS) after it was audited against the technical criteria established by the European Standing Committee on Tests and Testing, part of the European Federation of Psychologists' Associations.