Items wOPSOCB and wYPOPSCB (BHPS)
To whom it may concern,
I am working with the BHPS data and came across what might be a data error. Very briefly put, items wOPSOCB and wYPOPSCB in the adult and youth file, respectively, are very closely related. (It’s the same question, but preceded by different prompts; they are also preceded by different items). But the response patterns to these same items are dramatically different, comparing the youth and adult files. This can easily be seen when comparing the descriptive statics made available in the online documentation (links below). Breaking the response pattern down by age suggests that this isn’t an age-progression in attitudes. There simply is a clear break. (The attached figures show that). In contrast, other items that are available in both the youth and adult files do not experience a break. (I’ve checked wOPFAMB vs. wYPOPFB and wOPFAMF vs. wYPOPFF – happy to send details).
It’s entirely possible that the different patterns in wOPSOCB and wYPOPSCB is a finding, not a bug. But before I rely on the items, I’d like to double-check with someone who is familiar with the construction of the BHPS.
Summary statistics, youth file:
Summary statistics, adult file: