st: Reliability (Spearman/Brown)

[Vanessa Mahlberg <vmahlberg@netcologne.de>]

Hallo,

I?ve got a (maybe very simple) question:

I would like to calculate the split-half reliability (Spearman/Brown) 
for a whole scala (including 14 items).If I use the spearman?s rank 
correlation I always get a kind of intercorrelation matrix...but I just 
want to have a single value that the Spearman Brown reliability for my 
whole is e.g. .95. (I want to compare this value with the one given by 
theoretical litterature).

It would be very kind if somebody could give me some advice concerning 
the right stata command.

Thanks and a nice weekend
Vanessa
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