COR613
January 5, 1996

Re:        Modified assignment of SEI (Duncan) and prestige (Siegel) scores for
           1970-basis Census occupation lines when industry or class of worker 
           is missing (for use in COR 612).  ALL OF THE CHANGES
           DESCRIBED IN COR 613, 613A, AND 613B ARE
           INCORPORATED INTO COR612C.

Rationale: There are some special problems in mapping occupational aspirations
           or expectations into SEI (Duncan) or prestige (Siegel) scores in
           1975-77 WLS data.  For more details, see COR315 (March 1979), 
           COR315 Addendum I (July 1979), and Memo 122 (January 1996).

1.    In the cases of OCR10 (Respondent's aspiration for occupation 10 years in
      the future) and XOCR10 (Sibling Respondent's aspiration for occupation 10
      years in the future), detailed occupation and industry were collected, 
      but the "class of worker" item ascertained only whether R or SR wanted to
      be self-employed or not self-employed. Thus, it is possible to map into 
      SEI and prestige using the full set of codes for splits as described in 
      COR521C.  (Similar observations apply to all of the occupational 
      aspiration items in the 1992-94 (Wave 2) WLS data.)

2.    In the cases of occupational expectations and aspirations for selected 
      child, ascertained in the 1975 Respondent interview, no effort was made to
      ascertain industry or class of worker.  In these two cases, OCASSK 
      (detailed occupation of respondent's aspirations for child) and OCEXSK 
      (detailed occupation of respondent's expectations for child), SEI and 
      prestige should be mapped directly from the revised list of "male" scores
      adapted from Featherman, Sobel, and Dickens (1975, Appendix B), which is 
      appended in COR613B (also, see Memo 122 (January 1996)).

3.    In the cases of the retrospective reports of youthful aspirations, 
      ascertained in the 1975 Respondent interview or -- for 1975 
      Nonrespondents and 1977 Sibling Nonrespondents -- in the 1992-94 
      telephone interview, we have data on occupation and industry, but not 
      class of worker.  These two cases are OCZ (detailed occupation for the 
      job respondent expected to have when respondent was a senior in high 
      school) and XOCZ (detailed occupation for the job sibling respondent 
      expected to have when respondent was about 16 years old).  Class of 
      worker is not used in the assignment of 1970-basis prestige (Siegel) 
      scores, so the code in COR521C can be used without modification.  In the 
      case of the SEI, two occupation lines are split by class of worker.  
      Code 245 is split both by industry and class of worker, and code 964 is 
      split only by class of worker.  COR613A gives average values of the SEI 
      to be assigned within industry for code 245 and for code 964, which 
      should be assigned to these two items.  For lines other than code 245 and
      964, SEI (Duncan) scores should be assigned using the code in COR521C.

These directions, plus appropriate treatment of codes for missing data and non-
labor force activities, are incorporated in COR 612B and COR 612C.

Note: This text is in COR613.WP5.  The ASCII file containing the list of 
modified SEI (Duncan) scores is COR613A.ASC.  The ASCII file containing the 
list of "male" SEI (Duncan) and prestige (Siegel) scores is COR613B.ASC.