Missing values in peer assessment of social behavior using the RCP

This article deals with probable causes for missing values when using the Revised Class Play instrument for peer assessment of social behavior. The study was conducted with 10-13 year old primary school children in Sweden. The findings reveal that missing values may be caused by the cognitive and linquistic complexity of the instrument (RCP), as well as by gender stereotypes. The results indicated that investigatin the causes of missing values provides valuable information about the validity of the RCP. This information can be used to improve the instructions on how and when to use the RCP.