Test- re-test reliability
The IWAM (inventory for Work Attitudes and Motivations) instrument has been submitted to test- re- test reliability by 90 university students in Brussels, Belgium. Each of the forty test items, contained in the iWAM profile have been validated with the LAB profile (Language and Behaviour structured interview), by eighty six participants, described in detail by Charvet, (1995). Here the validity was rated at 0.9. The validation process was carried out in Belgium, France and the UK, between 1996 and 1999.
To what degree do test takes agree with the text generated about them in the basic iWAM report?”
A recent random sampling of the feedback of 617 persons having completed iWAM Questionnaire, was conducted amongst respondents from 12 countries. The feedback was requested as Yes=Agree / No= Not agree / Unsure, for each of the 48 individual iWAM patterns. The survey revealed an average rating of 89.33% agreement for users commenting on their perceived accuracy of their iWAM report. The data indicates that on average persons disagree with 1 out of the 10 categories. Further analysis show that they agree in 85.27% of the cases and are unsure in the remaining 4.55%. This represents very high end user validation of the accuracy of the iWAM reports. All research studies are available in detail on request