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. Author manuscript; available in PMC: 2010 Nov 15.
Published in final edited form as: Twin Res Hum Genet. 2008 Dec;11(6):586–595. doi: 10.1375/twin.11.6.586

Table 1.

Origins of Items in Environmental Measures

Total number of items Generated in-house Fuligni et al., 2002 Weinstein & Marshall, 1984 Csikszentmihalyi & Csikszentmihalyi, 1988
Peer stressors Academic 6 4 2
stressors Teacher–child 6 2 4
interactions 12 2 10
‘Flow’ 6 6