Table 3.

Confirmatory factor analysis results.

Model	${\mathit{\chi }}^2/\mathit{d}\mathit{f}$	CFI	TLI	IFI	RMSEA
Five-Factor Model: PIO, IB, CD, RI, PEE	2.538	0.968	0.962	0.969	0.054
Four-Factor Model: PIO, IB + CD, RI, PEE	5.952	0.895	0.876	0.895	0.096
Three-Factor Model: PIO + IB + CD, RI, PEE	8.640	0.839	0.809	0.840	0.120
Two-Factor Model: PIO + IB + CD + RI, PEE	11.473	0.780	0.738	0.781	0.140
One-Factor Model: PIO + IB + CD + RI + PEE	15.499	0.703	0.637	0.704	0.165

Note: PIO, Perceived information overload; IB, Impulsive buying behavior; CD, Cognitive dissonance; RI, Online return intention; PEE, Perceived environmental effectiveness.