Abstract
A Spanish version of the Marlowe and Crowne's social desirability scale. A Spanish adaptation of the Marlowe and Crowne's social desirability scale (SDS) based on the Item Response Theory (IRT) is presented. The historical evolution of both the social desirability construct and the SDS are revised. The Spanish version of the SDS behaves as essentially undimensional and has psychometric properties similar to those of the original version. The IRT model used to scale the SDS fits well the data and provides useful information about the properties of both the items and the total scale.
