- US Students (N=335)
- US Working Population (N=410)
- German Students (N=1267)
- German Working Population (N=166)
Internal Consistency reliability: Total Achievement Motivation displays high level of reliability (.96). 14 scales show adequate reliability (>.70).
Test-Retest Reliability: 14 scales exceed .80 and several approach .90
Standard Error of Measurement is approximately 4.00. 68% chance that the scores will be within a range of 4 points above to 4 points below the person's true score.
Content validity is described in the Technical Manual.
Intercorrelations between the AMI scales show a median correlation of .35
Construct validity comparing the AMI with the NEO PI-R show correlations between several scales and Conscientiousness. Compensatory Effort ((.52), Engagement (.56), Persistence (.55) and Self Control (.72). Neuroticism is negatively correlated to Confidence in Success (-.46), Fearlessness (-.56) Flexibility (-.43) and Persistence (-.50) Other correlations shown are Competitiveness and Agreeableness (-.40), Dominance and Extraversion (.46), Eagerness to Learn and Openness to Experience (.41)