Adding custom variable-attributes is a useful feature of SPSS available since version 14 of 2005. It can be used to assign additional information to variables and store it with the survey data, e.g. metadata or paradata. However, compared to the attributes reserved by SPSS (like variable labels or value labels), user-defined attributes demand extra attention and there are some pitfalls to look out for. SPSS pitfalls: Combining files with custom variable attributes weiterlesen