Reliability of a tool for measuring theory of planned behaviour constructs for use in evaluating research use in policymaking

Table 2 Test-retest reliability coefficients

Construct	r	G^{b, c}
Behavioural intention	0.89	G_1 = 0.31, G_2 = 0.47
Attitude	0.73	G_1 = 0.38, G_2 = 0.80
Subjective norm	0.79	G_1 = 0.62, G_2 = 0.86
Perceived behavioural control	0.68	G_1 = 0.52, G_2 = 0.82
Overall tool	--	G_1 = 0.51, G_2 = 0.89

^bCoefficients were calculated using T1 scores (G_1) and the average of T1 and T2 scores (G_2).
^cFacets: differentiation (P); generalizability (T); fixed (I)

ISSN: 1478-4505