Table 4.

Correlation matrix.

	Variable	1	2	3	4
1	Effectiveness knowledge new scale		0.86	0.21	0.39
2	Effectiveness knowledge established scale	0.40***		0.36	0.36
3	Environmental attitude	0.16**	0.19**		0.66
4	High-impact PEB	0.26***	0.17**	0.51***

^**p < 0.01.

^***p < 0.001.

Figures below the diagonal are uncorrected Pearson correlations, while those above the diagonal are corrected for measurement error attenuation, using the ratio between the observed correlation and the square root of the product of the two reliabilities (cf. Charles, 2005).