Abstract
This study examines the psychometric properties of the 14 item short form of the Freiburg Mindfulness Inventory (FMI) employing Rasch modelling. As both a once-factorial (mindfulness as a generic construct) and a two-factorial solution (mindfulness comprised of the two subcomponents presence and acceptance) have been suggested, this study compares the psychometric properties of both models. Results corroborated the psychometric qualities of the instrument with the exception of one item and suggest that the twofactor solution is more desirable from a psychometric point of view. However, there is evidence for bottom and ceiling effects that may blur measurement in individuals extremely high and low in mindfulness.
Sauer, Sebastian