Objective

To design and validate an instrument for a performance evaluation of the instrumental activities of daily living according to the current needs and features of adults, considering the terminological update in Occupational Therapy.

Materials and Methods

This is a multivariate, quantitative, evaluation research study. A three-dimensional instrument was designed, one to assess the level of performance, another to assess the reasons for dependency and a third one to assess the importance of the activity. A field test was carried out in 38 users of community rehabilitation centers. Subsequently, the designed instrument was submitted to construct and content validation through expert judgment and factorial analysis of data from a sample of 89 people from the aforementioned rehabilitation centers according to the inclusion criteria.

Results

An analysis was performed by means of construct validation through a factorial statistical analysis. A Cronbach's alpha value above 0.7 was obtained for the three dimensions of the instrument, which results in a reliable instrument.

Conclusion

Due to the content and construct validation, together with a statistical analysis of its dimensions, the instrument can be considered as a suitable tool for the proposed population and can therefore be disseminated and used within this discipline.